RULES FOR CLASSIFICATION
Ships
Edition July 2021
Part 1 General regulations
Chapter 1 General regulations
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DNV AS
FOREWORD
DNV rules for classification contain procedural and technical requirements related to obtaining and
retaining a class certificate. The rules represent all requirements adopted by the Society as basis
for classification.
©
DNV AS July 2021
Any comments may be sent by e-mail to rules@dnv.com
This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of this
document. The use of this document by other parties than DNV is at the user's sole risk. Unless otherwise stated in an applicable contract,
or following from mandatory law, the liability of DNV AS, its parent companies and subsidiaries as well as their officers, directors and
employees (“DNV”) for proved loss or damage arising from or in connection with any act or omission of DNV, whether in contract or in tort
(including negligence), shall be limited to direct losses and under any circumstance be limited to 300,000 USD.
This document supersedes the July 2020 edition of DNVGL-RU-SHIP Pt.1 Ch.1.
The numbering and/or title of items containing changes is highlighted in red.
Changes July 2021, entering into force 1 January 2022
Topic
Reference
Description
Statutory certification
Sec.1 [4.1.2]
Replaced 'survey' with 'certification' to clarify the intention of
the paragraph.
Builder's responsibility for
integration of systems and
equipment
Sec.2 [1.2.3]
Adding requirement to clarify that the builder shall have
full responsibility for integration of and between systems,
equipment, components and the vessel.
Installation of repaired,
unused equipment
Sec.2 [1.7.2]
Adding clarifying requirement for handling and repair of new
equipment damaged during installation or manufacturing.
Change of reference document
on repair gudance
Sec.3 [2.5.2]
Changed reference to new document in guidance note for repair
guidance.
Suspension and withdrawal of
certificates
Sec.4 [3.1.3]
Clarification of information given to a customer and that the
Society may make information publicly available.
Rebranding to DNV
All
This document has been revised due to the rebranding of DNV
GL to DNV. The following have been updated: the company
name, material and certificate designations, and references to
other documents in the DNV portfolio. Some of the documents
referred to may not yet have been rebranded. If so, please see
the relevant DNV GL document.
Editorial corrections
In addition to the above stated changes, editorial corrections may have been made.
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Part 1 Chapter 1 Changes - current
CHANGES – CURRENT
Changes – current.................................................................................................. 3
Section 1 Classification principles........................................................................... 7
1 General................................................................................................ 7
1.1 The Society......................................................................................7
1.2 Definitions....................................................................................... 7
2 The classification concept..................................................................11
2.1 Introduction................................................................................... 11
2.2 Main class and class notations..........................................................11
2.3 Conditions and assumptions involving other parties............................. 12
2.4 Interaction with flag administrations and statutory requirements........... 12
2.5 The rules....................................................................................... 13
2.6 Documentation and information........................................................ 14
2.7 Disclosure of information................................................................. 14
2.8 Access........................................................................................... 15
2.9 Calibration of equipment..................................................................15
2.10 Service suppliers...........................................................................15
3 Appeals.............................................................................................. 15
3.1 Decisions taken by the Society......................................................... 15
4 Statutory certification........................................................................ 16
4.1 General..........................................................................................16
4.2 Service suppliers.............................................................................16
Section 2 Assignment of class............................................................................. 17
1 Assignment of class - new vessels.................................................... 17
1.1 General..........................................................................................17
1.2 Requirements for builder or designer.................................................17
1.3 Applicable rules.............................................................................. 18
1.4 Plan approval................................................................................. 20
1.5 Survey during construction.............................................................. 20
1.6 Functional testing........................................................................... 21
1.7 Installation of machinery, systems and equipment.............................. 21
2 Assignment of class - existing vessels...............................................21
2.1 General..........................................................................................21
2.2 Applicable rules.............................................................................. 21
2.3 Plan approval................................................................................. 21
2.4 Class entry survey.......................................................................... 22
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CONTENTS
3.1 General..........................................................................................22
3.2 Late commissioning.........................................................................22
4 The register of vessels...................................................................... 23
4.1 General..........................................................................................23
Section 3 Retention of class................................................................................ 24
1 Conditions for retention of class........................................................24
1.1 General requirements...................................................................... 24
1.2 The customer’s obligations............................................................... 24
1.3 Maintenance................................................................................... 25
2 The Society’s involvement................................................................. 25
2.1 Applicable rules.............................................................................. 25
2.2 Surveys......................................................................................... 26
2.3 Conditions and memoranda..............................................................26
2.4 Survey statement and survey status................................................. 27
2.5 Damage and repairs........................................................................27
2.6 Conversions and alterations............................................................. 28
3 Endorsement and renewal of the class certificate..............................28
3.1 Endorsement of the class certificate.................................................. 28
3.2 Renewal of the class certificate.........................................................29
4 Suspension and withdrawal of class.................................................. 29
4.1 General..........................................................................................29
4.2 Suspension of class.........................................................................30
4.3 Reinstatement following class suspension...........................................30
4.4 Withdrawal of class......................................................................... 31
4.5 Re-assignment of class following class withdrawal............................... 31
5 Change of owner or manager............................................................ 32
5.1 General..........................................................................................32
6 Force majeure....................................................................................32
6.1 General..........................................................................................32
Section 4 Certification of materials, components and systems............................ 33
1 General.............................................................................................. 33
1.1 Introduction................................................................................... 33
1.2 Requirements for manufacturer........................................................ 33
2 The Society’s involvement................................................................. 33
2.1 General..........................................................................................33
2.2 Plan approval................................................................................. 34
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3 The class certificate...........................................................................22
2.4 Survey...........................................................................................35
2.5 Manufacturing survey arrangement................................................... 35
3 Suspension and withdrawal of certificates........................................ 35
3.1 General..........................................................................................35
Appendix A Terms and conditions......................................................................... 36
Changes – historic................................................................................................ 45
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2.3 Type approval.................................................................................34
1 General
1.1 The Society
1.1.1 DNV is an organisation with the objective of safeguarding life, property, and the environment.
DNV operates through the limited company DNV AS, which is registered in Norway and operates through a
worldwide network of affiliates and offices.
DNV carries out classification, certification and other verification services related to ships, facilities, systems,
materials and components and performs research in connection with these functions. Moreover, provided its
integrity is not impaired, DNV may perform assignments which utilize its knowledge or which contribute to
develop knowledge that will be required for the performance of these tasks.
1.1.2 The DNV general terms and conditions (T&C), see App.A, for classification services, are an integral part
of the rules in their latest version. In case of any ambiguities or contradictions between the T&C and other
parts of the rules, the provisions of the T&C shall prevail.
1.2 Definitions
Table 1 Verbal forms
Term
Definition
Shall
Verbal form used to indicate requirements strictly to be followed in order to
conform to the document.
Should
Verbal form used to indicate that among several possibilities one is recommended
as particularly suitable, without mentioning or excluding others.
May
Verbal form used to indicate a course of action permissible within the limits of the
document.
Table 2 Definitions
Term
Definition
alteration
A change that does not affect the basic character or structure of the vessel it is
applied to.
builder
The party contracted to build a vessel in compliance with the Society’s rules.
certificate
A document confirming compliance with the Society's rules or with other rules
and regulations for which the Society has been authorized to act. Compliance is
confirmed on the date as given in the certificate.
certification
A service that comprises assessment of compliance with applicable requirements
and issuance of a certificate if compliance is confirmed.
class
Class is assigned to and will be retained for vessels, which the Society has found
to be in compliance with applicable requirements of the Society’s rules.
class certificate
A certificate confirming compliance with the Society's rules as applicable and at
the time of survey.
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SECTION 1 CLASSIFICATION PRINCIPLES
Assignment of class to an existing vessel.
class notation
An abbreviation or keyword expressing a specific feature relating to a vessel or
its machinery, systems and equipment, or service area while referring to specific
requirements in the rules.
classification
A service which comprises the development and maintenance of rules, and the
verification of compliance with the rules throughout the vessels' life.
The extent of and methods for verifying compliance will be decided by the Society
to establish reasonable assurance that the relevant rules are complied with.
compliance document
See DNV-CG-0550 Sec.3.
condition of class
A requirement that specific measures, repairs or surveys shall be carried out
within a specific time limit in order to retain class.
condition on behalf of the flag
administration
A requirement that specific measures, repairs or surveys shall be carried out
within a specific time limit in order to retain the statutory certificate.
A condition on behalf of the flag administration will be issued only when the
Society has been authorised by the flag administration, see [4].
conditions
General term that includes both condition of class and condition on behalf of the
flag administration.
contract for construction
A contract between the prospective owner and the builder to build a vessel, see
Sec.2 [1.3.2].
convention vessel
A vessel which due to its tonnage, usage or dimensions would, if trading in
international waters or on international voyages, fall within the requirements of
any, or any part, of the IMO and/or ILO Conventions.
conversion
Change that substantially alters the dimensions, carrying capacity, engine power
or the type of the vessel.
customer
Any person and/or company which has requested the Society’s service and/or has
entered into a contract for services directly with the Society.
deficiency
A failing or shortcoming with respect to applicable requirements.
designer
A party who created or developed documentation which is submitted to the
Society for approval or information.
documentation
Drawings, descriptions, calculations, reports, procedures, certificates and
similar information describing e.g. the design, installation, testing, operation,
maintenance or status of an object.
flag administration
The government of the state whose flag the vessel is entitled to fly.
guidance notes
Additional information containing advice which is not required for the assignment
or retention of class, but with which the Society, based on experience, advises
compliance.
IACS
The International Association of Classification Societies.
ILO
The International Labour Organization.
IMO
The International Maritime Organization.
ISO
The International Organization for Standardization.
lay-up
Term used for vessels that are out of commission. In this state the vessel may be
at anchorage or permanently moored in a safe harbour.
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class entry
Characters showing compliance with a defined set of classification rules for hull
and/or machinery.
In the context of these rules for classification:
— structural strength
— watertight integrity and weathertightness
main functions
— power generation
— propulsion
— steering
— drainage and bilge pumping
— ballasting
— anchoring.
manufacturer
An organization that manufactures the material or product, or carries out part
production that determines the quality of a material or product, or does the final
assembly of a product.
material declaration
See DNV-CG-0550 Sec.3.
material test report
See DNV-CG-0550 Sec.3.
memorandum to owner
Information related to the vessel, its machinery, system and equipment or
applicable requirements. A memorandum to owner will be issued in relation to
information that does not require any corrective action or survey.
newbuilding
A new vessel under construction at a builder.
non-convention vessel
A vessel other than a convention vessel.
owner
The registered owner and/or manager of the vessel and/or any other organization
and/or person who has assumed the responsibility for operation of the vessel and
who on assuming such responsibility has agreed to take over all the duties and
responsibilities related to the vessel.
patrolling
An independent and unscheduled check that the applicable processes, activities
and associated documentation of the shipbuilding functions continue to comply
with the rules and statutory requirements.
plan approval
A systematic and independent assessment of drawings, design documents
or records by the Society to verify compliance with the rules or statutory
requirements where authorised by a flag administration.
plan approval staff
Personnel authorized to carry out plan approval and to conclude whether or not
compliance with the rules or statutory requirements has been met.
port state authority
The maritime authority in the country of the vessel’s port of call.
Requirements for the process of assessing compliance with technical
requirements. Procedural requirements cover:
procedural requirements
— basis for design assessment, i.e. information or documentation requirements
— requirements for certification of products
— requirements for surveys to assign, maintain and retain class.
product declaration
See DNV-CG-0550 Sec.3.
product test report
See DNV-CG-0550 Sec.3.
quality system
A quality management system and established procedures for production and
control.
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main character of class
The ability of a component or a system to perform its required function under
given conditions for a given time interval.
repair
To restore an object that is damaged or broken to a condition that it is in
compliance with the rules. In general, this implies that the original design is
restored.
retroactive requirement
A requirement in the rules or a statutory requirement that will enter into force
for certain vessels in operation and under construction at a given date or at an
upcoming survey. The retroactive requirement will specify the required actions to
be taken in order to retain class or statutory certification.
RR related to statutory certification will be issued only if the Society has been
authorised to carry out statutory certification on behalf of the flag administration.
rules
Independent standard that consist of all requirements, technical and procedural,
adopted by the Society as the basis for classification.
Society
DNV AS and its affiliates carrying out classification and statutory certification.
statement of compliance
A document confirming compliance with specified requirements for which the
Society has not been authorized to act. Compliance is confirmed on the date as
given in the statement.
statutory certification
A service with the intention of confirming compliance with regulatory codes and
regulations – in agreement with relevant flag administrations.
survey
A systematic and independent assessment of a vessel, materials, components
or systems in order to verify compliance with the rules and/or statutory
requirements.
Surveys will be carried out on the vessel, at the construction or repair site as well
as at sub-suppliers or other locations at the discretion of the Society, which also
decides the extent and method of survey.
surveyor
Personnel authorized to carry out surveys and to conclude whether or not
compliance has been met.
technical requirements
Requirements for design and construction of a vessel, system or component, and
the minimum requirements they shall meet during the operational lifetime.
tentative rules
Provisional rules to which the Society reserves the right to make immediate and/
or retroactive adjustments in order to obtain the purpose intended.
ultimate owning company
A company that may be recognized as the factual owner because use and
benefit belongs to that company without being the legal, registered owner (e.g.
through ownership of shares or company participations), and that thereby has a
determining influence on the vessel.
verification
A service that confirms through the provision of objective evidence (analysis,
observation, measurement, test, records or other evidence) that specified
requirements have been met.
vessel
Any object designed for transportation or special operations on water.
witnessing
Attendance of tests or measurements with the intention of verifying compliance
with agreed test or measurement procedures.
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reliability
2.1 Introduction
2.1.1 The classification concept consists of the development and application of rules with regard to design,
construction and survey of vessels.
2.1.2 In general, the rules cover requirements for:
— availability of main functions and the safety of installations supporting the main functions
— the structural strength and integrity of essential parts of the vessel's hull and its appendages
— the safety of machinery, systems and equipment supporting non- main functions that constitute possible
hazards to personnel and vessel
— safety levels and availability beyond that of main class, see [2.2.2].
2.1.3 Class may be assigned to a vessel when the Society has established reasonable assurance that the
rules are complied with.
2.1.4 The assignment of class is documented by the issuance of a class certificate or an interim class
certificate and the entry of the vessel’s main particulars and details of class in the Society’s register of
vessels (see Sec.2 [4]).
2.1.5 Class is maintained during the service period provided applicable requirements are observed and
surveys carried out. The class will be retained on the condition that the requirements applicable for retention
of class are complied with. Retention of class is confirmed by annual endorsements and renewal of the class
certificate at 5-year intervals.
2.2 Main class and class notations
2.2.1 The class notations are based on the following structure:
— main class notation.
— ship type notations
— mandatory ship type notations
— optional ship type notations.
— additional class notations
— mandatory additional notations
— optional additional notations.
— service area restriction.
Applicable class notations are provided in Ch.2.
2.2.2 Main class notation and mandatory class notation stipulates requirements for
— availability of main functions and the safety of installations supporting the main functions
— structural strength and integrity of essential parts of the vessel's hull and its appendages
— the safety of machinery, systems and equipment supporting non- main functions that constitute possible
hazards to personnel and vessel.
2.2.3 Class notations are assigned to a vessel in order to determine applicable requirements in the rules for
assignment and/or retention of that class notation.
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2 The classification concept
2.2.5 Upon consideration, class notations as found in other rule books published by the Society may be
assigned to a vessel complying with these class notations.
2.3 Conditions and assumptions involving other parties
2.3.1 Classification is performed on the basic assumption that other parties involved fulfil their individual
obligations, including ensuring compliance with the rules. Classification does not substitute the role and/or
release the obligations of other parties.
2.3.2 Nothing contained in these rules or in any certificate, report or document issued in connection with or
pursuant to these rules, shall relieve any customer, designer, engineer, builder, manufacturer, shipyard, seller,
supplier, owner, operator, vessel management or any other party from any obligations or consequences of
default whatsoever.
2.3.3 Compliance with the rules does not imply a vessel is considered seaworthy.
The acceptance and commissioning of a vessel is the exclusive responsibility of the owner.
2.4 Interaction with flag administrations and statutory requirements
2.4.1 The vessel's arrangement and equipment shall comply with the requirements given by its flag
administration, as applicable.
Such compliance is a prerequisite for class. Compliance shall be demonstrated by possession of the
applicable convention certificates issued according to [4]. The Society will not verify compliance with these
requirements unless authorised by the flag administration.
2.4.2 Convention vessels carrying more than 60 persons, in addition to the crew, may upon special
consideration by the Society, be subject to additional requirements.
Guidance note:
Compliance with e.g. the IMO Code of Safety for Special Purpose Ships may be required.
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2.4.3 For non-convention vessels, such as but not limited to:
— cargo ships less than 500 GT
— all vessels in domestic trade including passenger ships.
possible prerequisites for class are given in the respective chapters of the rules for the type of vessel in
question.
2.4.4 For non-convention vessels with more than 12 persons on board, scope of class may upon special
consideration be subject to additional requirements.
2.4.5 If the Society has not been authorised to undertake statutory certification on behalf of a flag
administration, the Society assumes the right to refuse to issue, or withdraw class for such vessels.
The Society decides the extent of authorization found necessary in order to retain class.
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2.2.4 Optional class notations include requirements to safety levels and availability beyond that of main class
and mandatory class notations.
2.5.1 The rules lay down technical and procedural requirements related to obtaining and retaining a class
certificate.
2.5.2 The rules stipulate requirements for the design, construction, survey and testing of vessels.
2.5.3 The rules stipulate requirements for structures, materials, machinery, systems and equipment.
2.5.4 The rules cover in some areas requirements also stipulated by IMO conventions and codes.
Guidance note:
For issuance of statutory certificates, compliance with the statutory instruments will prevail where the rules and IMO conventions
and codes differ, see [2.4.1].
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2.5.5 The rules and amendments to the rules accepted by the Society will enter into force on a date decided
by the Society.
Unless stated otherwise, the entry into force date shall be six (6) months after the date of publication.
Unless stated otherwise, the entry into force date for DNV documents referenced by the rules, as basis for
classification, shall be six (6) months after the date of publication.
Guidance note:
The date on which changes to the rules come into force is shown on page 3 of new/revised chapters of the rules.
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2.5.6 In the case where service experience and/or theoretical findings show that unacceptable risks may
exist in connection with items covered by the existing rules, the Society may, at any time, decide to lay down
supplementary or amended requirements concerning the assignment and retention of class.
2.5.7 If an amendment to the rules is made mandatory to vessels already contracted, see Sec.2 [1.3.3],
or to vessels that have already been assigned class, this will be especially stated in Pt.7 Ch.2 Retroactive
Requirements.
2.5.8 The Society may consider the use of risk based assessments as a means of documenting compliance
with requirements in the rules.
Guidance note:
The assessment may be carried out using the format presented in IMO MSC-MEPC.2/Circ.12 Revised Guidelines for Formal Safety
Assessment (FSA) for use in the IMO rule-making process.
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2.5.9 Alternatives to detailed requirements in the rules may be accepted when the overall safety and
reliability level is found to be equivalent or better than that of the rules. Approval may be revoked if
subsequent information indicates that the chosen alternative is not satisfactory.
2.5.10 If detailed requirements are not prescribed in the rules, the Society may consider the safety and
reliability level of a proposed solution, or require clarification to resolve the issue.
The Society reserves the right to accept or reject proposed solutions without justification.
2.5.11 The Society reserves the exclusive right to interpret, decide equivalence or make exemptions from
the rules.
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2.5 The rules
Using the rules without the Society’s corresponding classification services may have the result that safety
objectives are not met.
2.5.13 The rules are under the sole ownership rights and copyrights of the Society. It is prohibited by anyone
else than the Society to offer and/or perform classification or other services including issuance of compliance
documents, wholly or partly, on the basis of and/or pursuant to these rules without the Society's prior written
consent. The Society is not responsible for the consequences arising from any use of the rules by others.
2.6 Documentation and information
2.6.1 All documentation and information that may influence the judgement, decisions and requirements of
the Society for the purpose of classification, shall be made available to the Society.
It is the customer's responsibility to document and/or demonstrate compliance with the rules. Information
may be made available by submitting documents to the Society or by permitting surveys performed by
the Society at the customer’s premises, on board the vessel or at the premises of the customer's subcontractors.
2.6.2 Requirements for documentation in relation to plan approval or used for information are stated in each
chapter of the rules. Documentation shall be submitted to the Society by the customer in accordance with
DNV-CG-0550 Sec.6.
If additional documentation and/or information are required, the Society will ask for this specifically.
2.6.3 The submitted documentation, which forms the basis for classification shall, at all times, reflect
the true status. In this respect, any revisions of documents required for plan approval shall therefore be
submitted to the Society.
2.6.4 The supply of information should take place electronically and on a continuous basis in a format
accepted by the Society, e.g. by online access to the Society's data bases, see DNV-CG-0550.
2.6.5 The customer warrants that he/she has the necessary rights to disclose relevant documentation and
information to the Society.
2.7 Disclosure of information
2.7.1 The Society will not disclose any information received or reports made in connection with classification
to any other party than those entitled thereto (see IACS PR03) or to those having been given the right to
receive information by legislation, court decision or written permission from the owner of the information.
2.7.2 The Society will not disclose information that can be considered the property of another party except
when permission is given in writing by that party.
2.7.3 Internal communication, notes and calculations produced within the Society in connection with
classification will not be disclosed to other parties.
2.7.4 Notwithstanding [2.7.1] to [2.7.3], the following parties will have access to such information:
— authorised representatives of the flag administration
— authorised audit teams performing audits in connection with certification of the Society.
2.7.5 Notwithstanding [2.7.1] and [2.7.3], the Society may disclose information requested by a court order,
governmental body (including regional bodies) or other public investigation bodies that are authorised by a
decree.
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2.5.12 The rules are an integral part of the Society’s classification service. The safety objectives inherent in
the rules are only achieved in conjunction with this classification service.
See also IACS PR17.
2.7.7 Information recorded in the Society’s register of vessels, see Sec.2 [4], which encompass the status
of classification and statutory surveys and certificates issued by the Society, overdue conditions, class
suspensions, withdrawals and reinstatements will be published and/or released to any interested party e.g.
through Equasis according to IACS PR16.
2.7.8 The Society may at its discretion release information to other classification societies concerning
relevant technical information on serious hull structural, machinery and system failures for the purpose of
improving vessel safety and protection of the marine environment. The owner will be informed accordingly.
See also IACS PR 02A and PR 02B.
2.8 Access
2.8.1 For the purpose of verifying compliance with the rules, the customer shall provide the Society's
surveyors with safe access to the vessel and/or to their premises. The premises and objects to be surveyed
shall as agreed be cleaned and prepared for survey.
2.8.2 The customer shall provide flag administration and authorised audit and/or inspection teams with safe
access to the vessel and/or to their premises in order to audit the Society’s compliance with applicable rules,
regulations and quality standards.
2.8.3 The Society reserves the right to decline to perform a requested service when inadequate access is
provided or the safety of its surveyors may be compromised.
2.9 Calibration of equipment
2.9.1 Measuring and test equipment used by customers, the result of which may form the basis for the
surveyor's decisions, shall have a calibration status to an appropriate accuracy according to the rules or as
accepted by the surveyor.
2.10 Service suppliers
2.10.1 Suppliers providing services to the customer, such as measurements, tests and maintenance of
safety systems and equipment, the result of which may form the basis for the surveyor's decisions, shall be
approved by the Society, according to criteria established by the Society.
3 Appeals
3.1 Decisions taken by the Society
3.1.1 The customer may request in writing that a decision made by the Society shall be taken up for
reconsideration. The expenses incurred shall be paid by the customer. However, if the earlier decision is
revoked, the Society’s expenses will be covered by the Society.
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2.7.6 When deficiencies, possibly affecting the implementation of the International Safety Management
(ISM) Code on board, are identified during any survey, a report will be completed. The Society may, at its
discretion, release this report to the organisation responsible for the safety management system audit on
board.
4.1 General
4.1.1 The Society undertakes statutory certification on behalf of flag administrations when and to the extent
the Society has been authorised to do so by the individual flag administration.
Statutory certification includes inter alia approval, survey and the issuance of statutory certificates.
When the Society acts on behalf of a flag administration, the Society follows international statutory
instruments, IACS unified interpretations and DNV statutory interpretations, and generally follows guidance
issued by IMO in circulars etc. unless the flag administration has instructed the Society otherwise.
4.1.2 It is assumed by the Society that required statutory certification for vessels classed by the Society will
be carried out by the Society or by officers of the flag administration itself and that statutory certificates will
be issued by the Society or by the flag administration with the exceptions mentioned in [4.1.3] to [4.1.8].
The Society assumes the right to withdraw class if statutory certificates are not issued as described in this
paragraph.
4.1.3 The Society may accept that Safety Management Certificates (ISM Code) are issued by a third party
that has been authorised by the flag administration and complies with the Code for Recognized Organizations
(RO Code), adopted by Resolution MSC.349(92).
4.1.4 The Society may accept that International Ship Security Certificates (ISPS Code) are issued by a third
party that has been authorised by the flag administration and complies with MSC/Circ.1074.
4.1.5 The Society may accept that Maritime Labour Certificates are issued by a third party that has been
authorised by the flag administration and complies with MLC, 2006.
4.1.6 The Society may accept that Cargo Ship Safety Radio Certificates (SOLAS) are issued by a third party
that has been authorised by the flag administration.
4.1.7 The Society may accept that Statements of Compliance - Fuel Oil Consumption Reporting (MARPOL
Annex VI) are issued by a third party that has been authorised by the flag administration.
4.1.8 For a dually classed vessel, where the Society has not been authorised by the flag administration to
issue statutory certificates, the Society may accept that such certificates are issued by the other class society
as authorised by the flag administration.
4.2 Service suppliers
4.2.1 Where surveyors use the services of service suppliers in making decisions affecting statutory
requirements, the suppliers shall be approved by either:
—
—
—
—
the relevant flag administration
a duly authorised organisation acting on behalf of the flag administration
an equipment supplier when explicitly described by IMO conventions, resolutions or circulars, or
the Society.
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4 Statutory certification
1 Assignment of class - new vessels
1.1 General
1.1.1 A request for classification of a new vessel shall be submitted in writing by the customer. The Society
reserves the right to decline a request for classification.
1.2 Requirements for builder or designer
1.2.1 Builders or designers unfamiliar to the Society shall provide the Society with evidence of their
capability to successfully manage classification projects.
Guidance note:
Evidence may incorporate successful outcome of classification projects carried out for another classification society or successful
outcome of design projects of similar nature.
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1.2.2 Builders or designers shall instruct their subcontractors and suppliers of materials, machinery systems
and equipment that the Society’s rules apply and that the Society’s certificates shall be provided as and when
required by the rules, see Sec.4.
1.2.3 The builder shall have full responsibility for integration of and between systems, equipment,
components and the vessel. If the integration task or parts thereof is subcontracted, the builder shall ensure
proper interaction between all involved parties. When so is the case, the Society may communicate directly
with the subcontracted party on relevant integration matters.
1.2.4 Welding of important structures, machinery installations and equipment shall be carried out by
approved welders, with approved welding consumables, following approved welding procedures and, if
applicable, at welding shops approved by the Society. Requirements for approval of welding shops, welders,
manufacturers of welding consumables, welding consumables and welding procedures are given in the rules
and by a series of detailed approval programmes, see Pt.2 Ch.1 and Pt.2 Ch.4.
1.2.5 The following documentation from the builder or designer (workshop and yard) and from
subcontractors shall be submitted when requested by the Society:
— information related to the builder’s or designer’s quality control and quality management system
— information related to the builder's procedures for managing materials that are excluded from use on
board by class and/ or statutory requirements
— an 'asbestos free declaration' confirming that structures, machinery, systems and equipment on board are
asbestos free and meets the requirements set forth in SOLAS Ch.II-1/3-5.2
— list of relevant subcontractors to the builder
— list of relevant subcontractors to the manufacturer of systems and components to be delivered for the
product, if applicable.
1.2.6 To assess compliance with the rules the Society may require additional documentation.
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SECTION 2 ASSIGNMENT OF CLASS
1.3.1 The rules that apply for assignment of class to a new vessel are generally those in force at the date
of 'contract for construction'. The Society may upon special consideration and in agreement with the parties
involved decide on the rules to be applied.
For non-DNV issued documents, forming part of the basis for classification, the document in force at the time
of 'contract for construction' shall be applied, unless otherwise stated in the rules.
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1.3 Applicable rules
1)
2)
The date of 'contract for construction' of a vessel is the date on which the contract to build the vessel is
signed between the prospective owner and the shipbuilder. This date and the construction numbers (i.e.
hull numbers) of all the vessels included in the contract are to be declared to the classification society by
the party applying for the assignment of class to a newbuilding.
The date of 'contract for construction' of a series of vessels, including specified optional vessels for which
the option is ultimately exercised, is the date on which the contract to build the series is signed between
the prospective owner and the shipbuilder.
Vessels built under a single contract for construction are considered a 'series of vessels' if they are built
to the same approved plans for classification purposes. However, vessels within a series may have design
alterations from the original design provided:
a)
b)
such alterations do not affect matters related to classification, or
if the alterations are subject to classification requirements, these alterations are to comply with the
classification requirements in effect on the date on which the alterations are contracted between
the prospective owner and the shipbuilder or, in the absence of the alteration contract, comply with
the classification requirements in effect on the date on which the alterations are submitted to the
Society for approval.
The optional vessels will be considered part of the same series of vessels if the option is exercised not
later than 1 year after the contract to build the series was signed.
3)
If a contract for construction is later amended to include additional vessels or additional options, the
date of 'contract for construction' for such vessels is the date on which the amendment to the contract,
is signed between the prospective owner and the shipbuilder. The amendment to the contract is to be
considered as a 'new contract' to which 1 and 2 above apply.
4)
If a contract for construction is amended to change the ship type, the date of 'contract for construction'
of this modified vessel, or vessels, is the date on which revised contract or new contract is signed
between the owner, or owners, and the shipbuilder.
(IACS PR29 Rev.0)
1.3.3 For a vessel in a series of identical vessels under construction to the class of, or of a design previously
approved by another classification society, the Society may accept the design approved by that classification
society.
1.3.4 For a vessel where the flag administration undertakes approval and surveys of items covered by
statutory instruments which are also covered by the rules, the Society may accept their decisions as basis for
assigning class, provided the Society's remaining requirements for main class and mandatory class notations
are complied with. necessary documentation, such as copies of approved plans, reports and other particulars
approved by the flag administration shall be submitted.
1.3.5 A vessel trading solely in domestic waters, or between neighbouring states upon agreement between
such states, may be assigned class based on flag administration requirements for domestic service instead of
relevant requirements in the rules.
The assigned class shall in such cases be the class notations and service area restrictions having least
possible deviation from the requirements in the rules. The vessel will be assigned an additional class notation
comprising the letters of the nation in accordance with ISO 3166.
Deviations from the rules will only be considered when acceptance by the flag administration has been
documented.
Deviations from the rules will not be accepted for requirements given by optional class notations.
1.3.6 For a vessel intended to be permanently moored on location for production and/or storage of
hydrocarbons, the Society may accept decisions by the national administration with jurisdiction over the
waters in which the vessel shall operate (the shelf state) as basis for assigning class.
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1.3.2 The term date of 'contract for construction' shall be construed as follows:
In case of class being assigned on the basis of flag administration requirements according to [1.3.5] a
memorandum to owner shall also be issued, see Sec.3 [2.3.7].
1.4 Plan approval
1.4.1 The following documentation shall be submitted as specified in the applicable chapters of the rules.
— drawings, plans and specifications required for plan approval
— technical descriptions, calculations and data, including material specifications.
Any documents submitted for re-approval shall be especially marked to identify revised parts.
1.4.2 Where subcontractors and suppliers are involved, the customer shall co-ordinate the submission of
required documentation, as well as co-ordinate any approval comments given by the Society.
1.4.3 Documentation subject to plan approval will be assessed by and at the discretion of the Society. The
results of the assessment will be stated in a letter of approval. Comments, conditions and limitations may be
stated in the letter of approval or on the plans returned.
1.4.4 The plan approval may be revoked at any time if subsequent information indicates that the solution
was contrary to the rules.
1.5 Survey during construction
1.5.1 When a vessel is built under the supervision of the Society, the Society will verify:
— that the construction and scantlings comply with the requirements in the rules and the approved plans,
and that the required materials are used
— that the materials, components and systems have been certified in accordance with the rules
— that the work is carried out in compliance with the applicable rules and acceptable standards
— that satisfactory tests are carried out to the extent and in the manner prescribed by the rules.
Guidance note:
IACS Recommendation No. 47 'Shipbuilding and Repair Quality Standard' - Part A: for New Construction - is regarded as an
example of an acceptable standard.
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1.5.2 The scope of survey is decided by the Society. The scope has been established utilising knowledge
acquired from, amongst other, operational experience with risk based methods and experience feedback from
internal and external sources.
1.5.3 The Society may increase the scope based on observed quality during construction.
1.5.4 The Society may base its verification methods on the quality system as implemented in the builder's
fabrication processes and as accepted by the Society. The surveys at the builder's premises may consist
of a combination of visual inspection, review of records and witnessing of manufacturers' tests and
measurements.
1.5.5 The customer shall submit to the Society certificates for materials, components and systems installed
in the vessel and as required by the rules.
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1.3.7 When class is assigned on the basis of a design approved by another classification society, the flag
administration or according to flag administration requirements or decisions by national authorities according
to [1.3.4] or [1.3.5] or [1.3.6], information to this effect shall be included in the 'appendix to the class
certificate', see [3.1.5].
1.6.1 Where specified by the rules, testing shall be carried out in the presence of a surveyor, and related
requirements for test programmes shall be observed.
1.6.2 A test programme for harbour and sea trials shall be prepared by the customer and accepted by the
Society. The programme shall specify systems and components to be tested, and the testing procedure.
The Society may, in order to verify compliance with the rules, request additional tests and/or data to be
recorded.
1.6.3 The tests shall give evidence as to satisfactory operation and performance in accordance with the
rules. When testing control and safety systems, failure modes shall be simulated as realistically as possible.
1.7 Installation of machinery, systems and equipment
1.7.1 All material, machinery, systems and equipment covered by the rules shall in general be new.
Guidance note:
If second hand equipment complies with applicable rules for the newbuilding, it may upon special consideration by the Society be
installed, provided the owner has given a written acceptance.
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1.7.2 For new systems, equipment and/or components being damaged during manufacturing, installation
and/or testing and being adequately repaired, the Society may accept this as new according to [1.7.1] when
the relevant builder or manufacturer confirms that the operational life time and/or maintenance scheme is
not adversely affected.
2 Assignment of class - existing vessels
2.1 General
2.1.1 A request for class entry of an existing vessel shall be submitted in writing by the customer. The
Society reserves the right to accept or decline an application for class entry.
2.2 Applicable rules
2.2.1 Applicable rules for vessels at class entry are given in Sec.3 [2.1].
2.3 Plan approval
2.3.1 Before a vessel, which has not been built under the supervision of the Society, is surveyed for
assignment of class, the information required in [1.4.1] shall, in general, be submitted for plan approval.
For a vessel classed with a recognized classification society, the submitted information may be reduced to
plans showing the main scantlings and arrangements of the actual hull and machinery installations.
2.3.2 The extent of plan approval for a vessel, which has not been classed, or which was previously classed
with a classification society not covered by [2.3.1], will be specified in each case.
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1.6 Functional testing
2.4 Class entry survey
2.4.1 Prior to assigning class to an existing vessel, that vessel shall undergo the surveys pertaining to the
age and type of the vessel as a minimum.
The scope of survey will in each separate case be decided by the Society.
2.4.2 Before assigning class, the flag administration will be notified about the class entry. The flag
administration may decide that an extended scope of surveys has to be carried out.
3 The class certificate
3.1 General
3.1.1 The Society will issue a class certificate as proof of assignment of class.
3.1.2 Class may be assigned with conditions of class, see Sec.3 [2.3].
3.1.3 The class certificate is valid provided conditions for retention of class, see Sec.3 are complied with, as
follows:
— for a new vessel: to a date not exceeding 5 years from the date of class assignment
— for an existing vessel: to a date not exceeding 5 years from the expiry date of the existing certificate, see
Sec.3 [3.2]
— for an existing vessel taken into class: to a date not exceeding 5 years from the date of class assignment
or, if the Society accepts the periodical surveys credited by the previous classification society, until the
expiry date of the class certificate of the previous classification society
— for an interim class certificate: to a date not exceeding 15 months from assignment of class.
3.1.4 Upon request, statements confirming compliance with the rules may be issued for hull, machinery or
specific class notations provided the Society's class has been assigned.
3.1.5 An 'appendix to the class certificate' will be issued stating assumptions for the assignment of class and
restrictions regarding the use of the vessel which were established or assumed at the time of assignment of
class.
3.2 Late commissioning
3.2.1 If the vessel is not immediately commissioned upon delivery, but is laid up for a period, the vessel may
be accepted for entry into service upon application by the owner. The vessel may be subject to a condition
survey before entering into service.
The extent and scope of survey will depend on the time period laid up and conservation measures taken.
A survey in dry dock may be required.
Provided the hull, machinery, systems and equipment are found in all respects free from deterioration,
subsequent periodical surveys will date from the time of the condition survey.
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2.3.3 For a vessel that has been built under the supervision of another classification society, the Society may
on the basis of an overall consideration and survey, exempt the vessel from requirements in the rules.
4.1 General
4.1.1 When a vessel has been assigned class, its main particulars and details of the class assigned will be
entered in the Society’s 'register of vessels'. In addition to the class notations, appropriate data related to
identification, flag, ownership and other particulars will also be entered.
4.1.2 The class assignment date is entered in the 'register of vessels'. For vessels built under the supervision
of the Society, the due date for the periodical surveys will be calculated from this date. For vessels built
under the supervision of another classification society, the due date for the periodical surveys will depend
upon the existing periodical survey schedule defined by the previous classification society.
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4 The register of vessels
1 Conditions for retention of class
1.1 General requirements
1.1.1 The vessel shall be adequately manned, and the hull, machinery, systems and equipment shall be
competently handled at all times.
1.1.2 Operation of the vessel shall comply with the assumptions and conditions stated in the 'appendix to the
class certificate' and in applicable operating manuals. This includes, but is not limited to, the distribution and
stowage of cargo, the distribution of ballast and bunkers, speed and navigation.
1.1.3 The vessel, its hull structure, machinery, systems and equipment shall be maintained at a standard
complying with the requirements of the rules, see [1.3].
1.1.4 Installed machinery, systems and equipment carried on board in excess of the minimum required for
main class and mandatory class notations shall either be maintained to applicable standards, or be removed
or disconnected in such a way as to ensure that the installed machinery, system or equipment cannot be
used.
1.1.5 The statutory certificates required by applicable international conventions and/or national legislation
shall be valid at all times and shall be issued by the Society, the flag administration itself, or by a third party
approved by the flag administration, within the limitations set out in Sec.1 [4].
1.2 The customer’s obligations
1.2.1 In order to retain a vessel's class with the Society, the customer shall:
— at all times, ensure that the vessel is maintained to the rule standard
— submit complete and correct information related to the vessel and its use, which is of significance to the
Society for its assessment of the condition of the vessel in relation to the rules
— ensure that the vessel is competently handled
— subject the vessel to unscheduled surveys when deemed necessary by the Society
— rectify deficiencies and carry out any conditions of class or retroactive requirement specified by the
Society
— subject the vessel to surveys as required by the rules, and provide the necessary facilities for safe
execution of surveys
— submit complete and correct information on the ownership and management of the vessel, addresses and
corresponding administrative information pertinent to the register of vessels, see Sec.2 [4]
— submit correct information on the registration of the vessel
— keep on board and ashore a set of as-built drawings/documentation including subsequent alterations/
conversions
— pay all fees and expenses due to the Society. The owner has, together with managers, charterers and
operators, a joint and several liability for any such fees and expenses. If a request for services is made by
any other party than the owner, that party will, in addition to the owner, be responsible for the payment of
the relevant fees
— notify the Society when the vessel is laid up or otherwise taken out of service for a period of more than 3
months.
The customer should notify the Society before any dry docking of the vessel, in addition to the dry docking in
connection with the bottom surveys as stipulated by the rules.
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SECTION 3 RETENTION OF CLASS
The survey shall be of an extent considered necessary by the attending surveyor for ascertaining the extent
of the damage.
1.2.3 If inspections by port state control (PSC) or flag administration reveal deficiencies related to
certificates issued by DNV, the customer shall inform the next attending surveyor of the Society immediately
about any deficiencies revealed by PSC or flag administration since last survey.
If the vessel is detained, the Society shall be contacted for immediate attendance.
1.3 Maintenance
1.3.1 The customer shall ensure that the vessel, its hull structure, machinery, systems and equipment at all
times is properly maintained.
Guidance note:
Maintenance of the hull structure, machinery, systems and equipment is normally to be in accordance with applicable recognised
standards in the industry or in accordance with procedures recommended by the manufacturer.
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1.3.2 The vessel shall have implemented a maintenance system. The maintenance system shall ensure that:
—
—
—
—
inspections and maintenance are carried out at defined intervals
any defect is reported with its possible cause, if known
appropriate correction or repair action is taken
records of these activities are maintained.
1.3.3 Machinery, systems and equipment that are replaced shall be delivered with certificates and
documentation as required by the rules for the original machinery, system or equipment.
Certification according to current rules which are less stringent than those originally enforced, may be
accepted by the Society on a case by case basis.
2 The Society’s involvement
2.1 Applicable rules
2.1.1 Vessels built under the supervision of the Society shall in general be maintained and repaired in
compliance with the rules to which it was constructed, except in cases mentioned in [2.5] and [2.6].
2.1.2 For vessels built under the supervision of a classification society recognized by the Society, the rules in
force at the same date as those enforced by the other society will be applied. If such date is not known, the
Society’s rules in force at the date of 'contract for construction' will be applied, see Sec.2 [1.3.2].
2.1.3 For vessels other than those covered by [2.1.1] and [2.1.2], the Society's rules for new vessels in
force at the time of entry into class will be applied.
2.1.4 Amendments to the rules may be made retroactive. If so, this will be stated or referred to in Pt.7 Ch.2.
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1.2.2 If the hull structure, machinery, systems or equipment covered by classification sustain damage
to such an extent that it may be presumed to lead to a condition of class, see [2.3], the Society shall
immediately be informed. The vessel shall be surveyed in the first port of call or according to instructions
from the Society.
2.2 Surveys
2.2.1 The objective of a survey shall be to establish reasonable assurance that the vessel, its hull structure,
machinery, systems and equipment are in compliance with the rules and suitable for continued safe and
reliable operation.
2.2.2 A survey may consist of a combination of visual inspections, audits, measurements, functional testing,
non-destructive testing and review of maintenance and other relevant records.
2.2.3 The minimum extent of prescribed periodical surveys is given in Pt.7 Ch.1. The Society may increase
the extent of surveys when deemed necessary in order to ascertain the condition of the vessel.
2.3 Conditions and memoranda
2.3.1 A condition of class will be imposed for, but not limited to the following:
— Repairs and/or renewals related to damage, defect or breakdown that are considered by the Society to be
sufficiently serious to affect the assigned class (e.g. grounding, structural damages, machinery damages,
wastage over the allowable limits etc.)
— supplementary survey requirements
— temporary repairs.
2.3.2 The Society will issue a condition of class when deemed necessary to carry out assessments in order
to ascertain whether damage, a defect or a deficiency affecting the assigned class has been sustained or is
imminent.
2.3.3 A condition of class may contain the following:
—
—
—
—
a description of the deficiency, defect, damage or the assessment required
required action
due date for the required action to be completed
possible temporary requirements imposed until the required action has been completed.
Alternatively the condition of class may refer to a survey statement for above details.
2.3.4 If a condition of class is considered by the Society to seriously affect the vessel’s safety and reliability,
immediate action will be required. Otherwise a time limit will be given for the action to be completed.
2.3.5 A condition of class will be deleted when the Society, through a survey or received information, is
satisfied that requested action has been satisfactory completed.
2.3.6 When the Society has been authorised to carry out a statutory survey and identify a finding that
exclusively relates to a statutory certificate, a condition on behalf of the flag administration will be imposed
for specific measures, repairs or surveys that shall be carried out within a specific time limit in order to retain
the statutory certificate.
2.3.7 For information related to the vessel, its machinery systems, and equipment or to requirements
in the rules, the Society may issue a memorandum to owner. A memorandum to owner may supplement
information given otherwise, e.g. in the appendix to the class certificate or the Society’s 'register of vessels'.
2.3.8 A memorandum to owner may be used in, but not limited to, the following cases:
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2.1.5 In cases where amendments to the rules are made applicable to existing vessels at the first annual,
intermediate or renewal survey after a specified date, or after the vessel reaches a specified age, the expiry
date of the related survey time window shall determine when the amendments become effective.
exemptions from requirements in the rules
accepted deviations from applicable requirements
limitations on the use of the vessel or its equipment
defects or deficiencies of no concern to class
deleted class notations
equipment in excess of class requirements disused
information related to agreed survey arrangements.
2.3.9 Outstanding findings will be given in writing at completion of surveys and may be recorded as condition
of class. Findings may also be communicated verbally during the course of surveys. Findings that have been
corrected before the survey has been completed will not be recorded as condition of class.
2.3.10 The Society may at any time modify a condition of class or memorandum to owner if considered
appropriate. The owner will be notified accordingly.
2.3.11 Condition of class or memorandum to owner are recorded in the vessel's class status from where they
will be deleted when no longer valid. The owner will be notified accordingly.
2.3.12 The owner will be informed of retroactive requirements.
2.4 Survey statement and survey status
2.4.1 The surveyor will provide a statement to the customer on surveys carried out.
2.4.2 Survey statements may contain the following information, to the extent applicable in each case:
—
—
—
—
—
—
—
types of surveys carried out
certificates issued, endorsed or extended
damage, defects and/or deficiencies observed
confirmation that repairs have been completed and accepted by the surveyor
conditions issued or deleted
memorandum to owner issued or deleted
retroactive requirements issued or deleted.
2.4.3 The Society will make class status reports available to customers on the Society’s internet website, see
Sec.1 [2.7].
It is the customer's responsibility to obtain this information from the Society’s internet website. Class status
reports, on paper, may be distributed upon request.
2.4.4 Any document issued by the Society in relation to surveys performed reflects the condition of the
vessel at the time of the survey only.
2.5 Damage and repairs
2.5.1 Repairs shall in general be carried out in such a way that the original design and scantlings are
restored. Possible design modifications or reduced scantlings based on current rules which are less stringent
than those originally enforced, may be accepted by the Society.
2.5.2 Repairs to the hull structure, machinery, systems or equipment covered by the rules shall be carried
out by qualified personnel and in compliance with applicable rules, with good engineering practice and under
the supervision of a surveyor.
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—
—
—
—
—
—
—
Guidelines for hull repairs can be found in DNV-CG-0456 Repair guidance for vessels in operation.
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2.5.3 Repairs as stipulated in [2.5.2] may be carried out without the attendance of a surveyor (e.g.
during voyage) provided a repair plan is accepted by the Society in advance. A surveyor shall be called for
acceptance of such repairs when completed.
2.5.4 In any emergency circumstance, emergency repairs are to be effected immediately. The repairs shall
be documented in the vessel's log and submitted thereafter to the Society for use in determining further
survey requirements.
2.6 Conversions and alterations
2.6.1 Alterations of vessels, except for assignment of new class notations, shall in general comply with the
rules applied during newbuilding, see Sec.2. Upon request, the current rules may be applied. Conversion of a
vessel shall in general comply with the current rules. Current rules will in general be applied when assigning
a new class notation to a vessel.
2.6.2 If the hull structure, machinery, systems or equipment shall be converted or altered, the changes shall
be documented and be approved in the same manner as for new vessels, see Sec.2 [1.4].
2.6.3 Conversion or alterations shall take place under the supervision of the Society, see Sec.2 [1.5].
3 Endorsement and renewal of the class certificate
3.1 Endorsement of the class certificate
3.1.1 The class certificate will be endorsed upon satisfactory completion of annual and intermediate surveys
for main class and class notations, as applicable. The certificate will be endorsed for satisfactory completion
of renewal survey if there is a delay in issuance of the new certificate according to [3.2].
The class certificate will not be endorsed unless the following has been dealt with and accepted by the
Society:
—
—
—
—
overdue
overdue
overdue
overdue
periodical class surveys
continuous survey items
conditions of class
retroactive requirement.
3.1.2 If the class certificate is endorsed at completion of renewal surveys, the surveyor may extend its
validity as necessary, but not more than to a date 5 months after the completion date, or after the expiry
date of the class certificate, whichever comes first. If the class certificate has expired at the time of renewal
survey completion, new certificate should be issued.
3.1.3 In the case where postponement of the renewal survey has been granted upon the customer’s written
request, the class certificate shall be replaced by an interim class certificate with a validity not more than 3
months beyond the validity of the class certificate.
3.1.4 In the case where the main class annual survey is commenced prior to the defined time window,
the survey must be completed not more than 6 months after the date of commencement. In such cases
the certificate will be endorsed for advancement of anniversary date (due date) for the subsequent annual
surveys.
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Guidance note:
3.2 Renewal of the class certificate
3.2.1 A new class certificate will replace the existing class certificate when renewal survey has been
satisfactory completed and the Society has established reasonable assurance that the requirements for
retention of class have been met.
3.2.2 The new class certificate will be valid to a date not exceeding 5 years from:
— the expiry date of the existing certificate when the renewal survey has been completed within 3 months
before the expiry date of the existing certificate, or
— the expiry date of the existing certificate when the renewal survey has been completed after the expiry
date of the existing certificate, or
— the completion date of the renewal survey when the renewal survey has been completed more than 3
months before the expiry date of the existing certificate, or
— the completion date of the renewal survey when the renewal survey has been commenced more than 15
months before the expiry date of the existing certificate.
3.2.3 In cases where postponement of a renewal survey has been granted, the new class certificate will be
valid to a date not exceeding 5 years from the expiry date of the existing certificate before the extension was
granted.
3.2.4 In cases where the renewal survey is carried out concurrently with a conversion as defined in [2.6],
or when the renewal survey has been completed following vessel being laid up or being out of service for a
considerable period due to a major repair or modification, the validity of the new certificate will be 5 years
from the date of completion of the renewal survey. In such cases, the scope of the renewal survey shall be
increased to the extent of the next renewal survey.
3.2.5 For certain vessels the certificate validity and survey intervals may be reduced by the Society, e.g. for
vessels with new or novel design or for systems or items exposed to abnormal rates of wear or failure. Such
conditions will be stated in the 'appendix to the class certificate' and in memorandum to owner.
4 Suspension and withdrawal of class
4.1 General
4.1.1 Class may be suspended or withdrawn at any time if the Society finds it justified.
4.1.2 The Society may suspend or withdraw a vessel's class where the conditions for retention of class, have
been violated, see [1].
4.1.3 The decision to suspend or withdraw a vessel's class is made by the Society. However, in cases of
automatic suspension, see [4.2.1] and [4.2.2], no individual evaluation is made.
Suspension or withdrawal of class may take effect immediately or after a specified period of time. In special
cases, the suspension or withdrawal of class may be made with retroactive effect, see [4.2.5].
4.1.4 If the violation only affects requirements related to optional class notations, the suspension or
withdrawal may be limited to these class notations only.
4.1.5 When class is suspended or withdrawn the Society will:
— inform the owner
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Expiry date of the class certificate may remain unchanged, but additional surveys may be required so that
the prescribed survey intervals are not exceeded.
In the cases of class suspension, a time limit will be given for when the class will be withdrawn. This time
limit will in general not exceed 6 months. A longer suspension period may be granted when the vessel is not
trading as in cases of lay-up, awaiting disposition in case of a casualty or attendance for reinstatement.
4.2 Suspension of class
4.2.1 The class will automatically be suspended with immediate effect if the renewal surveys for hull,
machinery, systems and equipment related to main class and/or mandatory class notations are not
completed before the expiry date of the class certificate, and no postponement has been granted or unless
the vessel is under attendance for completion of the survey.
4.2.2 If the annual or intermediate surveys for main class and/or mandatory class notations are not
completed within 3 months from the anniversary date of the class certificate, the class is automatically
suspended with immediate effect, unless the vessel is under attendance for completion of the survey.
4.2.3 The Society may decide to suspend a vessel's class if the vessel is deemed to be unable to continue
safe and reliable operation, e.g. as a result of a major casualty.
4.2.4 If any outstanding debt owed to the Society is not paid within a notified date, the Society may suspend
the vessel's class with immediate effect.
4.2.5 In addition to the conditions laid down above, a vessel's class may be suspended with immediate effect
in cases where:
— rectification of deficiencies has not been carried out or otherwise dealt with in an appropriate manner, or
— rectification of deficiencies has not been surveyed and accepted by the surveyor,
— the rules or other requirements imposed by the Society have been violated.
4.2.6 Class will not be automatically suspended according to [4.2.1] or [4.2.2] whilst a vessel is laid up,
provided the requirements in Pt.7 Ch.1 Sec.1 [2.5] are complied with.
4.2.7 If a vessel has been detained as a result of port state inspections twice in a two year period and the
deficiencies are found to be serious, the Society may decide to suspend or withdraw class.
4.3 Reinstatement following class suspension
4.3.1 If the overdue surveys leading to class suspension as given in [4.2.1], [4.2.2] and [4.2.3] or
requirement as given in [4.2.4] are carried out within the specified time, the class will be reinstated provided
the following is met:
a)
b)
The result of the survey is such that all observed deficiencies are satisfactorily rectified. The Society may
after consideration accept that minor deficiencies are pending to be carried out.
No overdue periodical surveys or overdue conditions of class at that time.
4.3.2 The Society reserves the right to decline an application for reinstatement of class.
4.3.3 If the class has been suspended due to outstanding debt, the class will automatically be reinstated
when all outstanding debt has been paid, provided that there are no other reasons for suspension as outlined
in [4.2].
4.3.4 When the class is reinstated, the Society will:
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— inform the flag administration
— make an entry to this effect in the Society’s 'register of vessels'
— make the information publicly available.
inform the owner
inform the flag administration
make an entry to this effect in the Society’s 'register of vessels'
make the information publicly available.
4.4 Withdrawal of class
4.4.1 The owner can request a withdrawal of class at any time.
4.4.2 If the overdue surveys specified in [4.2.1], [4.2.2] and [4.2.3] or requirement as given in [4.2.4] are
not carried out within the specified time after the class suspension, the Society will withdraw the vessel's
class.
4.4.3 When a vessel proceeds to sea without having rectified a condition of class which was required to be
dealt with before leaving port, the class will be withdrawn with immediate effect.
4.4.4 If the Society becomes aware that a vessel continues operation with serious damage or defects in
violation of class requirements, the class may be withdrawn with effect from the time this became known to
the Society. The class withdrawal may be made retroactively.
4.4.5 When it is considered that an owner's failure to comply with rule requirements is sufficiently serious or
fraudulent the withdrawal of class may, at the discretion of the Society, be extended to include other vessels
controlled or operated by the same owner.
4.4.6 If any outstanding debt owed to the Society is not paid within a notified date, the Society may
withdraw the vessel's class with one month's written notice. This also applies when the obligation to pay rests
with a builder or with the vessel's previous owner. In special cases a shorter notice may be given.
4.4.7 If the owner makes a general assignment for the benefit of his creditors or if any proceedings are
commenced in court or any order or judgement is given by any court for liquidation, winding up of the owner,
the Society may withdraw the class with immediate effect.
4.4.8 For vessels having statutory certificates issued by third parties, except in those cases defined in Sec.1
[4.1.3] to Sec.1 [4.1.8], the class may be withdrawn.
4.5 Re-assignment of class following class withdrawal
4.5.1 In all other cases than that given in [4.4.1], and if the circumstances leading to withdrawal of class
no longer exist, a vessel may be re-assigned class upon written request. The extent of survey will in such
instances be decided by the Society.
4.5.2 The Society reserves the right to decline an application for re-assignment of class.
4.5.3 A new class certificate will be issued when the survey has been satisfactory completed and the Society
is satisfied that the requirements for retention of class have been met.
4.5.4 When the vessel is re-assigned class, the Society will:
—
—
—
—
inform the owner
inform the flag administration
make an entry to this effect in the Society’s 'register of vessels'
make the information publicly available.
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—
—
—
—
5.1 General
5.1.1 A vessel shall retain class when transferred to another owner or manager. The previous customer
shall give the Society immediate notice, in writing, of such transfers. Obligations according to the rules shall
remain with the previous customer until the Society is in receipt of such notice, in writing. See [1.2].
5.1.2 Class notations and survey arrangements based on certification of the management of operations will
be deleted automatically when the management of a vessel is transferred.
6 Force majeure
6.1 General
6.1.1 If due to force majeure, the vessel is not in port or is not accessible for surveys when surveys become
overdue, the Society may allow the vessel to sail in class. This is provided that the vessel proceeds directly
to an agreed port and, if necessary, proceeds in ballast to an agreed repair facility at which the survey
can be completed. In this context the 'force majeure' means damage to the vessel, unforeseen inability of
surveyors to attend the vessel due to governmental restrictions on right of access or movement of personnel,
unforeseen delays in port or inability to discharge cargo due to unusually lengthy periods of severe weather,
strikes, civil strife, acts of war or other force majeure.
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5 Change of owner or manager
1 General
1.1 Introduction
1.1.1 The scope of classification requires that specified materials, components and systems intended for
the vessel are certified according to the rules. The objective of certification is to ensure that materials,
components and systems used in vessels to be classed by the Society comply with the rule requirements.
Certification normally includes both plan approval and survey during production and/or of the final product,
see [2.2], [2.3] and [2.4].
1.1.2 The applicable chapters of the rules define the extent of the certification that is required for class.
1.1.3 When the Society issues a certificate to document compliance with requirements as described in this
section, the certificate will normally be in an electronic format that will be signed digitally. The electronic
version of the digitally signed certificate represents the original of the certificate and any paper version is a
copy.
1.2 Requirements for manufacturer
1.2.1 Manufacturers of materials, components and systems of categories not covered by Sec.2 [1.2] shall be
considered for approval according to criteria established by the Society, as applicable.
1.2.2 Quality control of materials, components and systems, shall be traceable and documented in writing.
Further, quality control shall be carried out by qualified personnel at facilities and with equipment suitable for
that control.
1.2.3 The following is mandatory and a prerequisite for issuance of certificates:
— document handling system to ensure the product is free from asbestos. This shall also include control with
sub-suppliers and contractors
— an 'asbestos free declaration' confirming that the product is free from asbestos and meets the
requirements set forth in SOLAS Ch.II-1/3-5.2.
2 The Society’s involvement
2.1 General
2.1.1 Compliance with rules for materials, systems and components will be confirmed by the types of
documents defined in DNV-CG-0550 Sec.3.
The applicable chapters and sections of the rules specify which types of documents are required.
2.1.2 Where the rules require product or material declaration or product or material test report, the surveyor
may at any time require the tests to be carried out in his presence and/or that the surveyor check elements
of the production control.
2.1.3 For identification and traceability, certified products shall be marked in accordance with the description
given in the product or material certificate and as specified by the applicable chapters of the rules.
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SECTION 4 CERTIFICATION OF MATERIALS, COMPONENTS AND
SYSTEMS
2.2 Plan approval
2.2.1 The plan approval of materials, components and systems shall be on a case by case basis or follow the
procedure for type approval, see [2.3].
2.2.2 When the case by case procedure is used, documentation of the design shall be submitted for plan
approval for each application as required in the applicable chapters of the rules.
2.2.3 A letter of approval or design verification report will be issued by the Society when compliance with the
requirements for the design has been confirmed.
2.3 Type approval
2.3.1 Type approval is a procedure for approval of standard designs and/or routinely manufactured, identical
components to be used in DNV classed objects. Type approval can be applied to:
— products
— groups of products
— systems.
2.3.2 The type approval procedure may consist of the following elements:
—
—
—
—
design assessment
initial survey
type testing
issue of a type approval certificate.
The type approval procedure used by the Society is described in DNV-CP-0338.
2.3.3 When the type approval procedure is used, the following shall be submitted for approval as required in
type approval programmes and the applicable chapters of the rules:
— documentation of the design
— results of type testing normally witnessed by a surveyor.
A type approval certificate will be issued by the Society when compliance with the design requirements is
confirmed.
2.3.4 For certain products and systems, as defined in applicable chapters of the rules, only type approval is
required. For these products and systems no survey is required, i.e. no product certificate is required.
2.3.5 For certain products and systems as defined in the applicable chapters of the rules, type approval is a
mandatory procedure for plan approval.
2.3.6 Products and systems manufactured for stock shall normally be type approved.
2.3.7 For type approved products, where the basis for approval is the rules, plans and technical descriptions
of the product need not be submitted for approval for each vessel unless otherwise stated as a condition on
the type approval certificate. In such cases only the arrangement or system plans, interface plans and those
plans mentioned on the type approval certificate shall be submitted for approval.
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2.1.4 For certain components and systems the certification will be based on defined internationally
acceptable standards and certification schemes as defined in applicable chapters of the rules. Compliance
with the requirements of the standard shall be documented as required by that standard.
2.4.1 The survey of materials, components and systems shall be on a case by case basis or on the basis of
an established manufacturing survey arrangement (MSA), see [2.5].
2.4.2 When the case by case procedure is used, the survey shall be performed on the basis of approved
design documentation for the actual application and as required in the applicable chapters of the rules.
Compliance with the approved design documentation and applicable requirements will be documented by
certificates as required in the applicable chapters of the rules.
2.4.3 When the survey is based on a MSA, the survey shall be performed on the basis of approved design
documentation, applicable rule requirements and in accordance with requirements and procedures laid
down in the MSA. Compliance with the approved design documentation and applicable requirements shall be
documented by certificates as specified in the MSA and/or as required in the applicable chapters of the rules.
2.5 Manufacturing survey arrangement
2.5.1 When the procedures and processes of a manufacturer's quality system are in compliance with
the rules, a manufacturing survey arrangement (MSA) may be established with the manufacturer as an
alternative to the survey described in the applicable rule chapters.
2.5.2 The MSA shall be described in a document stating the requirements, scope, acceptance criteria,
documentation and the roles of the Society and the manufacturer in connection with the survey.
2.5.3 When it is agreed through an MSA that the majority of the required surveys and test are completed
without the presence of a surveyor, it required that the manufacturer has in operation a quality system
certified by an accredited certification body to ISO 9001, or equivalent.
2.5.4 When establishing an MSA, an initial assessment of the manufacturer's ability to control product quality
and to comply with the scope, requirements and criteria laid down in the MSA will be performed.
The extent and frequency of periodical assessments of the manufacturer will be included in the MSA. The
Society reserves the right to conduct further inspections without notice at its sole discretion.
2.5.5 When the MSA is based on a certified quality system, the MSA automatically becomes invalid if the
quality system certificate no longer is valid.
3 Suspension and withdrawal of certificates
3.1 General
3.1.1 A product certificate, material certificate, type approval certificate or approval of manufacturer
certificate may be suspended or withdrawn at any time if the Society finds it justified.
3.1.2 The decision to suspend or withdraw a certificate is made by the Society.
Suspension or withdrawal of a certificate may take effect immediately or after a specified period of time. In
special cases, the withdrawal of a certificate may be made with retroactive effect.
3.1.3 When a certificate is suspended or withdrawn the Society will inform the customer and may make the
information publicly available.
In the case of suspension, a time limit will be given for when the certificate will be withdrawn.
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2.4 Survey
1
Definitions and General
"Affiliate" - shall mean any subsidiary, parent, ultimate holding company or a subsidiary of such
parent or ultimate holding company. For the purpose of this definition, "subsidiary" and "holding
company" shall have the meaning assigned to them under the Companies Act relevant to the
applicable law set out in Clause 17 herein;
"Contract" - shall mean the contract entered into between the Customer and DNV including these
General Terms and Conditions and the DNV Rules. The above listed documents shall be interpreted as
one agreement and in case of any ambiguities or contradictions between the various documents, the
documents shall take precedence in the order they are listed above;
"Claim" or "Claims" - shall mean any and all claims, losses (including pure economical losses),
demands, taxes, liens, liabilities, judgments, awards, provisional injunctions, remedies, debts,
damages, injuries, costs, legal and other expenses, or causes of action of whatsoever nature, and in
whatever jurisdiction the foregoing may arise;
"Consequential Loss" - shall mean loss and/or deferral of production, lost productivity (disruptions),
loss of product, loss of use, loss of time to any vessel or loss of hire, loss of business opportunities
and contracts, loss of goodwill, loss of data, loss of revenue, profit or anticipated profit (if any), losses
arising from liabilities or indemnities under other contracts, recall or rectification costs, in each case
whether direct or indirect and whether or not foreseeable at the commencement of the Work; ),
"Customer" - shall mean the person and/or company which has requested DNV's service and has
entered into a contract/agreement for services;
"Customer Group" - shall mean (i) the Customer and its affiliates; (ii) the Customer`s other
contractors (other than DNV), suppliers and subcontractors (of any tier) and their respective
Affiliates; and (iii) the respective directors, officers, managers, agents, employees (including agency
personnel) and representatives of the persons and entities mentioned under (i) and (ii) above as well
as any other person or entity acting on its/their behalf;
"Deliverable" - the deliverable(s) which is(are) to be provided to the Customer by DNV according to
the Contract;
"DNV" - shall mean for the purposes of these General Terms and Conditions, the company with which
the Customer has entered into the Contract being DNV AS or any of its branches and subsidiaries (as
the case may be);
"DNV Group" - shall mean (i) DNV, all its direct and indirect owners and its Affiliates; (ii) DNV's subcontractors (of any tier) and their Affiliates; and (iii) the respective directors, officers, managers,
agents, employees (including agency personnel) and representatives of the persons and entities
mentioned under (i) and (ii) above as well as any other person or entity acting on its/their behalf;
"DNV Rules" - shall mean all provisions and/or requirements adopted by DNV as the basis for
Classification at any point in time;
"Variation" - additional work to the Work originally agreed in the Contract;
"Work" - the services provided to Customer by DNV which are expressly set out in the Contract
including any Variation and any Deliverable.
These General Terms and Conditions shall be incorporated in the Contract and shall override and
exclude any terms and conditions sought to be imposed by the Customer. No amendment and/or
variation to these General Terms and Conditions and no additional terms put forward by the Customer
shall be considered binding or valid unless set out in writing and duly signed by the authorised
representatives of both parties.
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APPENDIX A TERMS AND CONDITIONS
2
The Work and execution of Work
2.1
The Work shall be carried out in accordance with the Contract, the provisions of these General Terms
and Conditions, the DNV Rules, the international conventions and/or EU regulations applicable to
the relevant Work and/or flag administration requirements. The same shall apply in the absence of
a written agreement between the parties. The Work performed by DNV is performed under the basic
assumption that other parties involved, including but not limited to the Customer´s other contractors
and suppliers, fulfil their individual obligations and provide correct and complete information. DNV
shall, upon completion of the relevant certification process and the Work, but subject to any relevant
findings from its assessment or inspections, issue the Deliverable, provided always that DNV in its
sole professional discretion finds that the applicable requirements are fulfilled. As a standard delivery
DNV will issue electronic certificates only.
2.2
When providing services DNV does not assess compliance with any standard other than the applicable
DNV Rules, international conventions, EU Regulations and/or flag administration requirements and
other standards, to the extent agreed in writing.
2.3
Any terms, conditions, duties or warranties otherwise incorporated or implied by law are hereby
expressly excluded in full or to the fullest extent permitted by the applicable law. The remedies set
forth in Clause 6 shall therefore be the sole remedies for any discrepancies, errors or omissions
whatsoever regarding the Work.
2.4
DNV will provide suitably qualified personnel to carry out the Work. Unless otherwise agreed, DNV
may at any time substitute personnel assigned to the Work, provided that any replacement personnel
are suitably qualified.
2.5
A confirmation given or certificate issued by DNV shall not substitute the role of and/or release
the Customer Group or any other parties involved from its contractual or legal obligations towards
any third parties and/or the Customer (as the case may be). Maintenance of the validity of such
confirmation or certificate, for example through the process of regular surveys in the case of ship
classification, is the responsibility of the Customer.
2.6
DNV may, without prejudice to any other rights available to DNV, at any time recall, suspend,
withhold, withdraw and/or reissue any Deliverable with immediate effect, suspend or withdraw any
vessel from class and/or suspend further performance of any services if in DNV's sole and unfettered
opinion: (i) Customer fails to provide any necessary information or documentation for the purpose of
maintaining the Deliverable and/or class; or (ii) Customer fails to comply in due time with conditions
or instructions issued by DNV; or (iii) Customer fails to pay any fees or other sums due to DNV; or
(iv) any relevant discrepancies, errors or omissions in the basis for the Deliverable is detected; or
(v) Customer misrepresents DNV's business name, trademark or Deliverable on which such name or
trademark is used.
2.7
DNV may retain or withhold any service, certificate or other deliverable to the Customer in respect of
all outstanding payments (whether related or not) arising out of the entire business relationship with
the Customer, regardless of whether one or more vessels owned or managed by the Customer are
affected.
3
General Obligations
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The respective latest version of the General Terms and Conditions as well as the applicable DNV
Rules, as made available on www.dnv.com shall apply to all work rendered by DNV, including those
rendered within the scope of DNV's statutory functions as recognised organisation or similar, even if
no written Contract was concluded.
Customer agrees that DNV's performance of the Work requires DNV to be granted access to and
the right to inspect all relevant sites, equipment, machinery and facilities and all relevant, correct
and complete documents and information. For this purpose, Customer shall in a timely manner,
without conditions, make all necessary arrangements and provide DNV with all reasonably necessary
access to the above mentioned information and sites. Unless it is explicitly agreed as part of the
Work to identify discrepancies, errors, inconsistencies or omissions in the information provided by the
Customer Group, Customer shall be responsible for the correctness of the information it provides and
DNV is entitled to rely on the accuracy and completeness of such information for the performance of
the Work.
All Deliverables provided by DNV are based on the information, documentation and/or physical items
made available by Customer to DNV up to the date of issuance of the Deliverable, and Customer
acknowledges and agrees that any statement made by DNV in the Deliverable is a statement
reflecting the situation at the time of issuance only.
3.2
Should the Customer fail to provide DNV with the required access or information at the agreed
times, DNV may suspend the performance of the Work pending receipt of the Customer's instructions
for access and/or necessary information. DNV shall have no liability as a consequence of any such
suspension and the Customer will be responsible for DNV's fees and other wasted costs and expenses
incurred by DNV.
3.3
Customer acknowledges and agrees that it has read and understood the requirements in the
applicable DNV Rules, international conventions, EU Regulations and/or flag administration
requirements and other standards applicable to the Contract and agrees to abide by them.
3.4
Any failure by Customer in fulfilling the obligations set out in this Section 3 is to be considered a
material breach of this Contract.
4
Health, Safety and Environment (HSE)
4.1
Both DNV and the Customer shall employ reasonable standards for promoting safety, health and
environmental protection and for ensuring safe working environments for their personnel.
4.2
Customer shall inform DNV without undue delay of: (i) any actual or potential HSE risk which
Customer is aware of and which is reasonably relevant to the performance of the Work; and (ii) any
of Customer's implemented or planned measures against such risks that Customer requires DNV's
personnel to adhere to.
4.3
Whenever DNV's performance of the Work involves visits to or work on Customer controlled
facilities or sites, Customer is responsible for the adequacy, stability, safety and legal compliance
of the working environment, including reasonable measures to mitigate or control relevant risks.
DNV or its personnel is entitled to refuse to carry out any activity, or visit any area or site, if
DNV or its personnel in their sole discretion consider that relevant risks are unacceptable or not
adequately addressed, contained or otherwise mitigated. Any such decision shall suspend both
parties' obligations under the Contract without any liability or penalties until the parties have agreed
on how to proceed.
5
Variations to the Work
5.1
Customer may in writing request DNV to perform a Variation. DNV shall not be obliged to execute any
Variations until a written agreement with the Customer regarding the remuneration and the potential
schedule impact of the Variation has been signed, which shall be an integral part of this Contract.
6
Re-performance
6.1
Any documented error or defect in the Work will be rectified by DNV within a reasonable period of
time at DNV`s sole cost, provided said error or defect is not attributable to Customer or Customer
Group and DNV is duly notified of said errors or defects within twelve (12) months after delivery or
completion of the Work, whichever occurs first.
7
Taxes and Remuneration
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3.1
Each party is solely responsible for paying any and all taxes, duties or similar government charges to
the competent public authority wherever such charges are levied and/or imposed on the activities of
the party.
Any and all prices, fees, rates or remuneration are agreed as stated exclusive of any form of
sales taxes, value added tax, goods and services tax and/or any other similar taxes including any
surcharges levied thereon which may be applicable.
7.2
Customer shall effect payment as agreed in the Contract to DNV, or another legal entity within the
DNV Group if specified as payee on the invoice, for the Work, including any Variations, to the bank
account stated on the invoice within thirty (30) days of the date of the invoice.
Work performed by DNV shall be invoiced in accordance with the tariffs of DNV or on the basis of the
price quoted in the offer or in the Contract. In addition thereto, DNV will charge any extra expenses
incurred in connection with the services rendered (e.g. travelling or other expenses and, where
applicable, any value added/turnover tax).
Customer accepts invoices sent by electronic means.
Additional expenses which are incurred by DNV in connection with the performance of the Work, and
for which DNV is not responsible, for instance, as a result of poor organisation on the part of the
Customer or of repetition of tests and extra time spent, will be charged separately at the respective
current cost rates.
7.3
In case of late payments, DNV is, in addition to the remedies set forth in Clause 2.6, entitled to
charge a late payment interest according to the applicable law of this Contract, or 8% per annum pro
rata, whichever is the higher.
7.4
All payments shall, subject to Clause 7.5, be made in cleared funds, without any deduction or set-off
and free and clear of and without deduction for or on account of any taxes, levies, imports, duties,
charges, fees and withholdings of any nature now or hereafter imposed by any governmental, fiscal
or other authority save as required by law.
7.5
If and to the extent Customer has to withhold taxes or other government charges according to
mandatory laws, Customer shall withhold and deduct such amounts from payments to DNV and pay
the amount to the competent tax authority or any other relevant governmental body, as the case may
be, within the time allowed and in the minimum amount required by law. Customer shall indemnify
and hold DNV harmless from any and all financial responsibility or sums found to be due arising out
of the non-payment, late-payment or payment to the non-competent tax authority or any relevant
governmental body.
Customer shall inform DNV about such withholding, any change in the rate or the basis of the
withholding and the availability of any formal procedure resulting in an authorisation to make a
payment without a withholding prior to making the payment. Customer and DNV shall co-operate in
completing any procedural formalities necessary for the Customer to obtain authorisation to make
payment without a withholding.
Within ten days of making either the withholding or any payment required in connection with that
withholding, the Customer shall deliver to DNV a withholding tax certificate, official receipt or
evidence reasonably satisfactory to DNV that payment has been made to the competent tax authority
or any other competent governmental body. Customer shall cooperate with DNV and shall use
reasonable efforts, at no cost to DNV, in seeking any double tax treaty relief, other exemptions and
refunds available following from such withholdings.
7.6
Section 7.1 to 7.5 shall apply accordingly in case an Affiliate provides the Work.
7.7
No disputes arising between DNV and the Customer shall interfere with prompt payment of invoices
by the Customer. Any rights of lien or retention in favour of the Customer, statutory or otherwise, are
hereby excluded. The Customer shall have no right to set-off any sums including sums in respect of
counter-claims, unless such counter-claim is undisputed or has been finally adjudicated upon by the
courts.
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7.1
Confidentiality
8.1
Each party as recipient agrees to keep confidential any information it receives from the other party
as disclosing party in the course of the Contract which, by denotation or reasonable circumstances, is
considered confidential to the disclosing party. The recipient shall treat such received information with
reasonable care and diligence, not disseminating or disclosing it to third parties without the disclosing
party's prior written consent, provided however that each party may share such information with its
officers, employees, affiliates, subsidiaries, subcontractors, suppliers or professional advisors who are
subject to confidentiality obligations reflecting the principles herein.
8.2
The obligations set forth in Clause 8.1 shall not apply to any information which: (i) is or becomes
known to the recipient from a third party without any confidentiality obligation to the disclosing party;
(ii) is or becomes generally available in the public domain through no act or failure to act on the
part of the recipient; (iii) has demonstrably been developed by the recipient independently from
this Contract; (iv) is requested to be disclosed by any competent court, governmental agency, flag
state administration, other relevant public authority in accordance with applicable law, court order or
other public regulation; (v) is disclosed to the registered owner and/or ultimate owning company of a
vessel without changing the general nature of confidentiality of such information if such information
is vessel-related or (vi) is required to be disclosed by the applicable stipulations of the International
Association of Classification Societies (IACS).
8.3
Customer acknowledges that DNV is bound by an obligation to give the EU Commission or anyone
acting on its behalf, access to information in accordance with applicable EU requirements, and that
Customer shall give the EU Commission unrestricted access to ships for the purpose of inspection.
8.4
DNV Group shall have the right to use for statistical, analytical and internal training purposes, any
material, in-formation or know-how generated in the course of the Work.
8.5
The obligations in this section shall survive the completion of the Work or termination of this Contract
and shall continue for as long as the relevant information remains confidential.
9
Assignment and Subcontracting
9.1
This Contract, including any Deliverable issued as a result hereof, is specifically related to the
Customer and no rights, obligations, interest, claim, benefit or Deliverable deriving here from shall
extend to any other (third) party without the prior written consent of DNV. Customer is not entitled
to grant to any third party any right of use in respect of any Deliverable without the prior written
consent of DNV. The Contracts (Rights of Third Parties) Act 1999 shall not apply to this Contract.
9.2
DNV may at its discretion subcontract parts of or the whole of the Work to any other company within
the DNV Group. The DNV Group shall have the benefit of, and shall be entitled to enforce against the
Customer the rights, exclusions, limitations of liability and indemnities set out in the Contract.
9.3
DNV is only responsible for the Work it has performed directly or through its subcontractors.
10
Intellectual Property Rights
10.1 For the purpose of this Contract, each party shall remain the sole owner of any of its intellectual
property and rights thereto existing prior to the date of this Contract and, except as explicitly set
out in this Contract, nothing herein shall imply any transfer or grant of rights to any such intellectual
property or rights thereto.
10.2 Customer shall hold a restricted, global and royalty free license to use the Deliverables or the results
of the Work for their agreed or ordinary purpose, including the right to use any valid certificates or
similar documents in accordance with the applicable requirements.
10.3 Subject to the confidentiality obligations set out in Clause 8 above, all intellectual property rights in
the information and data created in connection with this Contract shall vest in DNV. In particular, DNV
shall hold the copyright to all certificates and similar documents issued under this Contract. Nothing
herein shall be deemed to limit DNV Group rights according to Clause 8.4.
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8
10.5 DNV is continuously improving its services to the industry to safeguard life, property and the
environment. The customer acknowledges that DNV shall hold a right to use and process any
information, data or databases generated or collected throughout the Work in an anonymized form,
for its own competence building, research or business purposes.
11
Force Majeure
11.1 Neither party shall be in breach of this Contract, nor liable for any failure or delay in performance
hereunder if the cause of such failure or delay is attributable to events beyond the reasonable control
of the affected party, including but not limited to armed conflict, terrorist attack, civil war, riots, toxic
hazards, epidemics, natural disasters, extreme weather, fire, explosion, failure of utility service,
labour disputes, breakdown of infrastructure, transport delays, or any public restrictions following any
of the incidents above, or any other force majeure occurrence.
11.2 In the event of a force majeure occurrence, the affected party shall notify the other party without
undue delay of the particulars of the situation and the estimated duration. Either party shall be
entitled to terminate the Contract with immediate effect should the force majeure occurrence endure
for more than thirty (30) days.
12
Indemnifications
12.1 Each party shall indemnify and hold harmless the other party from and against all Claims arising
while carrying out the Work in respect of: (i) bodily injury, sickness, disease, or death of any of its
employees or other representatives; and (ii) loss of or damage to the party's property. This provision
shall apply whether or not the Claim is caused or contributed to by the negligence of the other party.
Both parties shall maintain insurances for such liabilities, cf. Clause 14, to make this knock-for-knock
provision effective.
12.2 The Work including any advice and information provided by DNV to the Customer as a part of the
Work, shall be for the Customer only. The Customer shall ensure that any other member of the
Customer Group and/or any third party is aware that the Work is intended for the Customer only
and it is understood and agreed that nothing expressed herein is intended or shall be construed to
give any person, firm or corporation, other than the signatories hereto any right, remedy or claim
hereunder or under any provisions herein contained. The Customer shall indemnify and hold harmless
the DNV Group from and against Claims brought by the Customer Group (other than the Customer) in
connection with the Work or any advice and information, in whatever form it may be given, which has
been provided by DNV to the Customer.
12.3 The Customer shall be responsible for and shall save, indemnify, defend and hold harmless the
DNV Group from and against all Claims in respect of pollution or contamination emanating from
the assets, equipment, facilities or property of Customer Group whether owned, hired, leased or
otherwise provided by the Customer Group and arising from, relating to or in connection with the
performance or non-performance of the Work, irrespective of cause and whether or not resulting
from or contributed to by any negligence, breach of duty (statutory or otherwise), breach of contract,
breach of warranty and/or strict liability of any member of the DNV Group.
12.4 Customer shall indemnify and hold harmless DNV from and against any Claims in respect of: (i)
Customer's breach of Section 3 (General Obligations); (ii) any abuse of the Deliverable issued under
this Contract.
12.5 The Customer´s obligations to indemnify DNV Group set out above in Clause 12.2, 12.3 and 12.4,
shall apply in respect of any Claims regardless whether such Claims against DNV Group are based on
breach of contract, direct action, breach of duty (statutory or otherwise), tort (including negligence),
"information liability", strict liability or otherwise, except if and to the extent such Claims are caused
by DNV´s (i) act or omission with the intent to cause damage or injury; (ii) act or omission in gross
disregard of a known or obvious risk which made it highly probable that harm would follow.
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10.4 The Customer warrants that it holds all necessary rights to material and information submitted for
the purpose of the Work. The Customer shall indemnify and hold harmless DNV from any Claim DNV
might suffer or receive as a consequence of any infringement of third party rights.
12.7 The Customer agrees that any Claim with respect to the Work shall be brought solely against DNV,
and the Customer shall indemnify and hold harmless DNV Group from any Claim brought against DNV
Group by any other party as a consequence of the Customer's breach of this Clause 12.7.
13
Limitation of Liability
13.1 Except for the re-performance of the Work as provided in Clause 6 and DNV`s indemnification
obligations set out in Clause 12.1 above, DNV shall not be liable for any Claim incurred by Customer
and/or Customer Group arising from, relating to or in connection with the performance or nonperformance of the Work by DNV, whether or not resulting from or contributed to by any negligence
(in whatever form on whatever organisation level), breach of duty (statutory or otherwise), breach
of contract, breach of warranty and/or strict liability of any member of the DNV Group, except to the
extent set out below.
DNV's liability for all Claims arising out of or in connection with this Contract shall be limited to an
aggregate total of 10 (ten) times the net fees (excluding any expenses and disbursements) payable
to DNV for the Work, never exceeding a maximum aggregate sum of USD 4 (four) million.
In case the Customer pays the fees periodically, e.g. under a Periodical Service Agreement or similar
fee arrangement, DNV's liability for all Claims arising out of or in connection with this Contract shall
be limited to an aggregate total of 10 (ten) times the annual net fee (excluding any expenses or
disbursements), never exceeding a maximum aggregate sum of USD 4 (four) million.
13.2 Any limitations and exclusions of DNV's liability shall extend to:
(i) the other members of the DNV Group; and
(ii) the relevant maritime administration of a vessel's country of registry (the "Flag Administration")
for any services provided hereunder on behalf of such Flag Administration, and the Customer accepts
that the other members of the DNV Group and the Flag Administration shall be entitled to invoke such
limitations and exclusions of liability directly towards any Claim from the Customer Group.
13.3 Notwithstanding any provision to the contrary elsewhere in these General Terms and Conditions
and irrespective of cause and whether or not resulting from or contributed to by any negligence
(whatsoever degree and whatsoever organisation level), breach of duty (statutory or otherwise),
breach of contract, breach of warranty and/or strict liability, the Customer shall be responsible for
and shall save, indemnify, defend and hold harmless the DNV Group from the Customer Group's
own Consequential Loss and DNV shall be responsible for and shall save, indemnify, defend and hold
harmless the Customer Group from the DNV Group's own Consequential Loss.
13.4 Neither party excludes or limits any liability which cannot be excluded or limited by the applicable
mandatory law.
13.5 Any Claim against DNV Group by the Customer shall be deemed to be irrevocably waived and time
barred upon the expiry of twelve (12) months from the date of completion of the relevant Work.
A later issuance of class certificate or confirmation of vessel being in class shall not result in the
commencement of a new one year's time bar period, except for services provided in addition to the
initial Work.
14
Insurance
14.1 Both parties shall maintain adequate insurance coverage covering their respective business activities
and their relevant personnel under the Contract, for such amounts and on such terms as are standard
in their respective industries and with underwriters who are in good standing. Such insurances shall
contain a waiver of subrogation.
15
Fair Business Practice, Anti-bribery and Compliance
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12.6 Each party shall notify the other party without undue delay upon becoming aware of any incident
likely to give rise to a Claim against the other party in relation to this Contract.
15.2 Customer shall indemnify and hold harmless DNV from any breach of Clause 15.1.
15.3 Both parties may terminate this Contract with immediate effect, without any liability or penalties, if a
member of DNV Group or Customer Group are or become subject to sanctions or penalties imposed
by a national government, the United Nations, the European Union or similar organisations related to
the Work which is provided hereunder, or if the Work could be considered to be illegal or in conflict
with applicable law for the respective party, its subcontractors and/or its subcontractor's' parent
companies.
16
Term and Termination
16.1 This Contract shall remain in full force and effect until all Deliverables are delivered, or the Work
is otherwise completed and paid for in full unless terminated earlier by mutual agreement or in
accordance with Clause 15.3 or Clause 16.2 below.
16.2 Each party may terminate this Contract by written notice to the other party under the following
circumstances:
(i) if the other party commits a material breach of this Contract and fails to rectify such breach within
10 (ten) working days after receipt of the other party's written notice;
(ii) if the other party becomes insolvent, is unable to pay its debts as they fall due, or is subject to
bankruptcy proceedings, administration, receivership, dissolution, liquidation, winding-up or otherwise
discontinues its business; or
(iii) for convenience after serving the other party a written notice 30 (thirty) days prior to
termination.
16.3 In the event the Contract is terminated by the Customer in accordance with 16.2 (iii) prior to
completion of the Work, irrespective of cause, DNV shall be entitled to: (i) the agreed remuneration
for the Work rendered up to the date of termination; (ii) all costs incurred by DNV up to and including
the termination date; and (iii) 10% of the remuneration agreed in respect of Work which has not
been provided. In the event of termination, DNV shall be entitled to retain any payment, deposit
or advance of any fees made by the Customer prior to the date of termination up to the amount to
which DNV is entitled.
16.4 In the event of termination of the Contract, the rights and obligations of DNV and the Customer
included in Clauses 1, 2, 3, 6, 7, 8, 10, 11, 12, 13, 17 and 18 shall remain in full force and effect.
17
Law and Jurisdiction
17.1 This Contract shall be governed by and construed exclusively in accordance with the laws of Norway,
without regard to principles of conflicts of law.
17.2 The parties shall use their reasonable efforts to resolve any claim or dispute arising in relation to
this Contract by negotiations within a reasonable time. Should the parties fail to resolve any claim
or dispute by negotiations, the dispute shall be exclusively subject to the jurisdiction of the courts of
Oslo, Norway.
18
Severability
18.1 Should any provision of these General Terms and Conditions be held to be invalid or unenforceable,
such shall not affect the validity or enforceability of any other part or provision of these General
Terms and Conditions. Such provision shall be amended to the extent necessary to make the
provision valid and enforceable, while keeping as strictly and closely as possible to the original
wording and purpose of the provision.
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15.1 The parties shall conduct their respective business activities in a fair, ethical, and lawful manner
in accordance with all applicable laws and generally accepted codes of conduct (including but not
limited to the DNV code of conduct), avoiding any unacceptable activities, including but not limited to
acceptance of or acquiescence in extortion, bribery, use of child labour, breach of human rights, or the
imposition of unreasonable work conditions.
Part 1 Chapter 1 Appendix A
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July 2020 edition
Changes July 2020, entering into force 1 January 2021
Topic
Applicable rules
Reference
Sec.2 [1.3.1]
Description
Information related to non-DNV GL issued documents.
July 2019 edition
Changes July 2019, entering into force 1 January 2020
Topic
Reference
Description
Entry into force for other
service documents
Sec.1 [2.5.5]
Clarification of the entry into force date for documents
referenced by the rules
Document review for MoU
vessels
Sec.2 [1.3.3]
Removed text which causes uncertainty as it contained no
requirement to the customer
July 2018 edition
Changes July 2018, entering into force 1 January 2019
Topic
Statements of Compliance
- Fuel Oil Consumption
Reporting (MARPOL Annex VI)
Reference
Sec.1 [4.1.7]
Clarification of actions required Sec.3 [1.2.3]
in case of deficiencies during
Port State Control (PSC)
Description
Added paragraph accepting that Statement of Compliance
- Fuel Oil Consumption Reporting (MARPOL Annex VI) is
being issued by a third party when authorised by the Flag
Administration.
Clarification of customer's responsibility in connection with Port
State Control (PSC).
January 2018 edition
Changes January 2018, entering into force 1 July 2018
Topic
Correction to acceptance of
deviations from class rules
Reference
Sec.2 [1.3.5]
Description
The limitation to accepting deviations from requirements for
structural strength, machinery installations, steering appliances
and electrical systems and equipment covered by main class is
removed.
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Part 1 Chapter 1 Changes – historic
CHANGES – HISTORIC
Reference
Move to electronic certificates
Sec.3 [3.2.1]
Description
Deleted guidance note as we are moving to electronic issuance
of certificates.
July 2017 edition
Changes July 2017, entering into force 1 January 2018
Topic
Reference
PR 17 - Reporting
on deficiencies
possibly affecting the
implementation of the
ISM Code on board
during surveys
Sec.1 [2.7.6]
Removing a limitation
with respect to
deviations from the
rules
Sec.2 [1.3.5]
Description
January 2017 edition
Main changes January 2017, entering into force 1 July 2017
• Sec.1 - Classification Principles
— Sec.1 [1.1.1]: clarification of services offered
— Sec.1 [1.1.2]: clarifications of relationship between Terms & Conditions and the Rules
— Sec.1 Table 2: the definition of Classification has been amended to specify extent and method for
verification of compliance
— Sec.1 Table 2: added definition: 'Ultimate Owning Company'
— Sec.1 [2.3.3]: clarification of Owner's responsibility
— Sec.1 [2.6.5]: added paragraph: regarding rights to disclose relevant documentation.
• Sec.2 - Assignment of Class
— Sec.2 [3]: clarification of issuance of Class Certificate
— Sec.3 [2.6.2]: deleted Guidance Note considered superfluous
• Sec.3 - Retention of Class
— Sec.3 [1.3.3] and Sec.3 [2.5.1]: clarification of which certification requirements to apply on an existing
vessel
— Sec.3 [3.1.3]: changed procedural requirement for postponement of the Class Certificate
• Sec.4 - Certification of materials, components and systems
— Sec.4 [2.3.1]: editorial corrections made
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Part 1 Chapter 1 Changes – historic
Topic
Part 1 Chapter 1 Changes – historic
October 2015 edition
Amendments July 2016
• Sec.3 Retention of Class
— Sec.3 [1.3.3]: Added paragraph.
— Sec.3 [2.1.1] and Sec.3 [2.5.1]: Editorial corrections made.
Amendments January 2016
• General
— Only editorial corrections have been made.
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General regulations
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Page 47
About DNV
DNV is the independent expert in risk management and assurance, operating in more than 100
countries. Through its broad experience and deep expertise DNV advances safety and sustainable
performance, sets industry benchmarks, and inspires and invents solutions.
Whether assessing a new ship design, optimizing the performance of a wind farm, analyzing sensor
data from a gas pipeline or certifying a food company’s supply chain, DNV enables its customers and
their stakeholders to make critical decisions with confidence.
Driven by its purpose, to safeguard life, property, and the environment, DNV helps tackle the
challenges and global transformations facing its customers and the world today and is a trusted
voice for many of the world’s most successful and forward-thinking companies.
WHEN TRUST MATTERS
RULES FOR CLASSIFICATION
Ships
Edition July 2021
Part 1 General regulations
Chapter 2 Class notations
The content of this service document is the subject of intellectual property rights reserved by DNV AS (“DNV”). The user
accepts that it is prohibited by anyone else but DNV and/or its licensees to offer and/or perform classification, certification
and/or verification services, including the issuance of certificates and/or declarations of conformity, wholly or partly, on the
basis of and/or pursuant to this document whether free of charge or chargeable, without DNV’s prior written consent. DNV
is not responsible for the consequences arising from any use of this document by others.
The PDF electronic version of this document available at the DNV website dnv.com is the official version. If there
are any inconsistencies between the PDF version and any other available version, the PDF version shall prevail.
DNV AS
FOREWORD
DNV rules for classification contain procedural and technical requirements related to obtaining and
retaining a class certificate. The rules represent all requirements adopted by the Society as basis
for classification.
©
DNV AS July 2021
Any comments may be sent by e-mail to rules@dnv.com
This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of this
document. The use of this document by other parties than DNV is at the user's sole risk. Unless otherwise stated in an applicable contract,
or following from mandatory law, the liability of DNV AS, its parent companies and subsidiaries as well as their officers, directors and
employees (“DNV”) for proved loss or damage arising from or in connection with any act or omission of DNV, whether in contract or in tort
(including negligence), shall be limited to direct losses and under any circumstance be limited to 300,000 USD.
Part 1 Chapter 2 Changes - current
CHANGES – CURRENT
This document supersedes the July 2020 edition of DNVGL-RU-SHIP Pt.1 Ch.2.
The numbering and/or title of items containing changes is highlighted in red.
Changes July 2021, entering into force 1 January 2022
Topic
New ship type notation
Reference
Sec.3
Description
The following notation is new:
— Deck carrier.
New additional class notations
Sec.4
The following notations are new:
— NAVI
— Fuel ready
— OR
— Gas fuelled ammonia
— Ready for C.
New qualifiers
Sec.4
The following qualifiers are new:
— HMON(Nn)
— HMON(Rn)
— HMON(Vn)
— COMF(Y-S)
— COMF(Y-M)
— COMF(NV)
— Quiet(I-qrn)
— Quiet(W-qrn).
Discontinued qualifiers
Sec.4
The following qualifier has been discontinued:
— REGAS(ES)
— Quiet(I[Ls,Lp,d,h])
— Quiet(W[Ls,Lp,d,h])
Rebranding to DNV
All
This document has been revised due to the rebranding of DNV
GL to DNV. The following have been updated: the company
name, material and certificate designations, and references to
other documents in the DNV portfolio. Some of the documents
referred to may not yet have been rebranded. If so, please see
the relevant DNV GL document.
Editorial corrections
In addition to the above stated changes, editorial corrections may have been made.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
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Page 3
Changes – current.................................................................................................. 3
Section 1 Class notations........................................................................................ 6
1 General................................................................................................ 6
1.1 Introduction..................................................................................... 6
Section 2 Construction symbol and main class notation......................................... 8
1 Construction symbols.......................................................................... 8
1.1 General........................................................................................... 8
2 Main class notation..............................................................................8
2.1 General........................................................................................... 8
Section 3 Ship type notations................................................................................. 9
1 Introduction.........................................................................................9
1.1 General........................................................................................... 9
2 Dry cargo ships................................................................................... 9
3 Container ships.................................................................................. 11
4 RO/RO ships...................................................................................... 11
5 Passenger ships................................................................................. 12
6 Oil tankers......................................................................................... 12
7 Chemical tankers............................................................................... 15
8 Liquefied gas tankers........................................................................ 16
9 Compressed gas tankers....................................................................18
10 Offshore service vessels.................................................................. 18
11 Vessels for special operations......................................................... 19
12 Non-self-propelled vessels...............................................................24
13 Fishing vessels.................................................................................25
14 Naval vessels................................................................................... 25
Section 4 Additional class notations..................................................................... 26
1 Introduction.......................................................................................26
1.1 General..........................................................................................26
2 Structural strength and integrity....................................................... 26
3 Propulsion, power generation and auxiliary systems......................... 33
4 Navigation and manoeuvring............................................................. 39
5 Cargo operations............................................................................... 41
6 Equipment and design features......................................................... 46
7 Cold climate....................................................................................... 54
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Part 1 Chapter 2 Contents
CONTENTS
9 Living and working conditions........................................................... 61
10 Survey arrangements.......................................................................62
11 Naval................................................................................................66
11.1 General........................................................................................ 66
12 Digital features................................................................................ 67
Section 5 Service area.......................................................................................... 69
1 Service area notation.........................................................................69
1.1 General..........................................................................................69
Section 6 Descriptive notation.............................................................................. 70
1 General.............................................................................................. 70
1.1 .................................................................................................... 70
1.2 .................................................................................................... 70
1.3 .................................................................................................... 70
1.4 .................................................................................................... 70
Changes – historic................................................................................................ 71
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Part 1 Chapter 2 Contents
8 Environmental protection and pollution control................................. 58
1 General
1.1 Introduction
1.1.1 All vessels classed with the Society may be assigned
—
—
—
—
—
—
construction symbol
main class notation
ship type notation
additional class notation
service area notation
descriptive notation
as applicable.
1.1.2 Class notations are assigned in order to determine applicable rule requirements for assignment and
retention of class. Applicable class notations are given in Sec.2 to Sec.6.
1.1.3 Class notations are either mandatory or optional. The mandatory class notations are indicated in the
tables given in Sec.2 to Sec.5.
1.1.4 In accordance with Ch.1 Sec.1 [2.2.5] optional class notations from the Society's other rule books
may, upon special consideration, be assigned to a vessel complying with those rules.
1.1.5 Class notations may be given one or more qualifiers which are supplementary symbols used to identify
variants of the class notation or a design parameter. Qualifiers typically denote differences in levels of
complexity and/or special requirements or limitations, and may be assigned additional requirements.
Qualifiers follow immediately after a class notation and are indicated in parenthesis. Multiple qualifiers are
separated by comma and space.
1.1.6 Class notations and qualifiers are shown in bold. See Table 1 for examples of class notations and
qualifiers.
1.1.7 The tables in Sec.2 to Sec.5 include the following information:
—
—
—
—
—
—
—
name of class notation
indication of class notation being mandatory
reference to design requirements*
reference to survey requirements for fleet in service (FIS)*
qualifiers as relevant
purpose of class notation
application, giving additional information on when and/or where a class notation can be applied and/or
under what condition a class notation is mandatory.
* NA indicates no requirements.
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Class notations
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Part 1 Chapter 2 Section 1
SECTION 1 CLASS NOTATIONS
Table 1 Examples of class notations
Example 1
Example 2
Example 3
Construction symbol (see Sec.2 [1])
✠
✠
✠
Main class notation (see Sec.2 [2])
1A
1A
1A
Container ship
Tanker for oil
Offshore service
vessel(AHTS)
CSR
Strengthened(DK)
E0
E0
Ship type notations (see Sec.3)
Additional class notations (see Sec.4):
Related to structural strength and integrity
Related to propulsion, power generation and
auxiliary systems
Related to navigation and manoeuvring
Related to cargo operation
E0
NAUT(AW, INS+)
RSCS+
NAUT(OSV)
Bow loading
DG
LFL HELDK(S, H) SF
Related to cold climate
Ice(E)
Ice(1A) Winterized
Related to environmental protection and
pollution control
Clean
Clean(Design)
Related to equipment and design features
Related to survey arrangement
BIS TMON
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Class notations
DNV AS
ESP TMON
Page 7
Part 1 Chapter 2 Section 1
1.1.8 Examples of typical class notations are shown in Table 1.
1 Construction symbols
1.1 General
1.1.1 The construction symbol ✠ will be assigned to vessels built under the supervision of the Society.
1.1.2 The construction symbol
will be assigned to vessels built under the supervision of a classification
society recognized by the Society and later assigned class with the Society. For such vessels the class
notations which the Society considers to have the equivalent intent will be assigned.
1.1.3 Vessels other than those described in [1.1.1] and [1.1.2] will not be assigned a construction symbol
when classed with the Society.
2 Main class notation
2.1 General
2.1.1 The main class notation 1A will be assigned to vessels with hull, machinery, systems and equipment
found to be in compliance with applicable rule requirements as given in Pt.2, Pt.3 and Pt.4. Requirements
given by ship type notations and additional class notations may supersede the requirements given in Pt.2,
Pt.3 and Pt.4. In such cases the main class notation 1A will still be assigned.
2.1.2 The main class notation 1A will also be assigned to vessels designed and constructed in accordance
with the rules of another classification society, and later assigned class with the Society.
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Class notations
DNV AS
Page 8
Part 1 Chapter 2 Section 2
SECTION 2 CONSTRUCTION SYMBOL AND MAIN CLASS NOTATION
1 Introduction
1.1 General
1.1.1 Vessels that comply with requirements defined in Pt.5 may be given a ship type notation as indicated
in Table 1 to Table 13 of this section.
1.1.2 A vessel may be assigned more than one ship type notation provided that the respective requirements
are met.
1.1.3 Certain ship type notations are mandatory based on e.g.:
— type of cargo
— number of passengers
— the ability to execute special operations.
2 Dry cargo ships
Table 1 Ship type notations for dry cargo ships
Class notation
Qualifier
Purpose
General dry cargo ship
Mandatory:
Carriage of unitized and dry
bulk cargo
Mandatory for ships
occasionally carrying
dry cargo in bulk, unless
ship type notation Multipurpose dry cargo ship is
assigned
Carriage of unitized and dry
bulk cargo
Mandatory for ships
occasionally carrying dry
cargo in bulk, unless ship
type notation General dry
cargo ship is assigned
yes
Design requirements:
Pt.5 Ch.1
<None>
Application
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
Multi-purpose dry cargo
ship
Mandatory:
yes
Design requirements:
Pt.5 Ch.1
<None>
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
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Class notations
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Page 9
Part 1 Chapter 2 Section 3
SECTION 3 SHIP TYPE NOTATIONS
Qualifier
Purpose
Carriage of dry bulk cargo
Mandatory for sea-going
single deck ships with
cargo holds of single
and/or double side skin
construction, with a double
bottom, hopper side tanks
and top-wing tanks fitted
below the upper deck, and
intended for the carriage of
solid bulk cargoes
Carriage of ore cargo in dry
bulk
Mandatory for sea-going
single deck ships having
two longitudinal bulkheads
and a double bottom
throughout the cargo
region, and intended for
carrying ore cargoes in the
centre hold only
Specialised for the carriage
of a single type of dry bulk
Mandatory unless ship type
notation Bulk carrier
is assigned. X denotes
type of bulk cargo to be
carried, limited to either,
Woodchips, Cement, Fly
ash, or Sugar
Carriage of dry bulk cargo
Designed to operate within
the limits of the Great
Lakes and St. Lawrence
river to the seaward limits
defined by the Anticosti
Island
Bulk carrier
Mandatory:
yes
Design requirements:
Pt.5 Ch.1
<None>
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
Ore carrier
Mandatory:
yes
Design requirements:
Pt.5 Ch.1
<None>
Application
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
X carrier
Mandatory:
yes
Design requirements:
Pt.5 Ch.1
<None>
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
Great lakes bulk carrier
Mandatory:
yes
Design requirements:
Pt.5 Ch.1
<None>
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
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Class notations
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Page 10
Part 1 Chapter 2 Section 3
Class notation
Table 2 Ship type notation for container ships
Class notation
Qualifier
Purpose
Application
Container ship
Mandatory:
yes
Design requirements:
Pt.5 Ch.2
<None>
Carriage of containers
FIS survey requirements:
Ships primarily intended for
the carriage of containers.
Carriage of break bulk
on inner bottom may be
accepted in special cases.
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
4 RO/RO ships
Table 3 Ship type notations for RO/RO ships
Class notation
Qualifier
Purpose
Application
RO/RO ship
Mandatory:
no
Design requirements:
Pt.5 Ch.3
<None>
Loading and unloading the
cargo by roll on / roll off
(RO/RO)
<None>
Carriage of vehicles
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
Car carrier
Mandatory:
no
Design requirements:
Pt.5 Ch.3
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
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Class notations
DNV AS
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Part 1 Chapter 2 Section 3
3 Container ships
Table 4 Ship type notations for passenger ships
Class notation
Qualifier
Purpose
Application
Passenger ship
Mandatory:
yes
Design requirements:
Pt.5 Ch.4
<None>
Carriage of passenger
More than 12 passengers
Carriage of passengers and
vehicles
More than 12 passengers
and vehicles on enclosed
decks
Carriage of passengers and
vehicles
More than 12 passengers
and vehicles on weather
decks only. Requires
service area restriction R2
or stricter
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Ferry
Mandatory:
A
yes
Design requirements:
Pt.5 Ch.4
FIS survey requirements:
B
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
6 Oil tankers
Table 5 Ship type notations for oil tankers
Class notation
Qualifier
Purpose
Application
Tanker for oil
Mandatory:
yes
Design requirements:
Pt.5 Ch.5
<None>
Carriage of oil in bulk
For carriage of oil
<None>
Carriage of oil products in
bulk
For carriage of all oil
products except crude oil
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Tanker for oil products
Mandatory:
yes
Design requirements:
Pt.5 Ch.5
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
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Class notations
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Part 1 Chapter 2 Section 3
5 Passenger ships
Qualifier
Purpose
Application
Barge for oil
Mandatory:
yes
Design requirements:
Pt.5 Ch.5,
<None>
Carriage of oil in bulk
For carriage of oil
<None>
Carriage of oil products in
bulk
For carriage of all oil
products except crude oil
<None>
Carriage of dry bulk cargo
alternating with carriage of
oil
Combination carrier
<None>
Carriage of all types of oil
products with flashpoint
above 60°C
For carriage of all types of
oil products with flashpoint
above 60°C
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Barge for oil products
Mandatory:
yes
Design requirements:
Pt.5 Ch.5,
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Bulk carrier or tanker for oil
Mandatory:
yes
Design requirements:
Pt.5 Ch.1
Pt.5 Ch.5
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Tanker for oil products with
flashpoint above 60°C
Mandatory:
yes
Design requirements:
Pt.5 Ch.5
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
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Class notations
DNV AS
Page 13
Part 1 Chapter 2 Section 3
Class notation
Qualifier
Purpose
Application
Tanker for asphalt/bitumen
Mandatory:
yes
Design requirements:
Pt.5 Ch.5
<None>
Carriage of liquid asphalt/
bitumen in bulk
For carriage of liquid
asphalt/bitumen in bulk
<None>
Carriage of all types of oil
products with flashpoint
above 60°C
For carriage of all types of
oil product with flashpoint
above 60°C
<None>
Carriage of liquid asphalt/
bitumen in bulk
For carriage of liquid
asphalt/bitumen in bulk
<None>
Carriage of dry bulk cargo
alternating with carriage of
oil products
Combination carrier
Pt.6 Ch.1 Sec.12
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Barge for oil products with
flashpoint above 60°C
Mandatory:
yes
Design requirements:
Pt.5 Ch.5,
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Barge for asphalt/bitumen
Mandatory:
yes
Design requirements:
Pt.5 Ch.5 and
Pt.5 Ch.11
Pt.6 Ch.1 Sec.12
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Bulk carrier or Tanker for
oil products
Mandatory:
yes
Design requirements:
Pt.5 Ch.1
Pt.5 Ch.5
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
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Class notations
DNV AS
Page 14
Part 1 Chapter 2 Section 3
Class notation
Table 6 Ship type notations for chemical tankers
Class notation
Qualifier
Purpose
Application
Tanker for C
Mandatory:
Carriage of specific type of
liquid chemical. C denotes
the type of cargo for which
the ship is classed.
Chemical carriers according
to the IBC or BHC code.
Cargoes not requiring full
compliance with Pt.5 Ch.6
Sec.1 to Pt.5 Ch.6 Sec.17
Carriage of chemicals
Chemical carriers with
cargos listed in the IBC
code Ch.17 and Ch.18 with
additions given in IMO
MEPC.2/Circ. XX List 1
<None>
Carriage of chemicals
Barge for chemicals with
cargos listed in the IBC
code Ch.17 and Ch.18 with
additions given in IMO
MEPC.2/Circ. XX List 1
<None>
Carriage of specific type of
liquid chemical. C denotes
the type of cargo for which
the ship is classed.
Chemical carriers according
to the IBC or BHC code.
Cargoes not requiring full
compliance with Pt.5 Ch.6
Sec.1 to Pt.5 Ch.6 Sec.17
yes
Design requirements:
Pt.5 Ch.6
<None>
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Tanker for chemicals
Mandatory:
yes
Design requirements:
Pt.5 Ch.6
<None>
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Barge for chemicals
Mandatory:
yes
Design requirements:
Pt.5 Ch.6
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Barge for C
Mandatory:
yes
Design requirements:
Pt.5 Ch.6
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
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Class notations
DNV AS
Page 15
Part 1 Chapter 2 Section 3
7 Chemical tankers
Qualifier
Purpose
Application
<None>
Carriage of non-flammable
liquid chemicals or liquid
chemicals with flashpoint
above 60°C and which are
not heated to within 15°C or
more of its flashpoint
Chemical carriers built in
compliance with Pt.5 Ch.6
Sec.1 [1.3.6] and Pt.5 Ch.6
Sec.1 [1.3.7]
<None>
Carriage of non-flammable
liquid chemicals or liquid
chemicals with flashpoint
above 60°C and which are
not heated to within 15°C or
more of its flashpoint
Barge for chemicals built in
compliance with Pt.5 Ch.6
Sec.1 [1.3.6] and Pt.5 Ch.6
Sec.1 [1.3.7]
Tanker for chemicals with
flashpoint above 60°C
Mandatory:
yes
Design requirements:
Pt.5 Ch.6
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Barge for chemicals with
flashpoint above 60°C
Mandatory:
yes
Design requirements:
Pt.5 Ch.6
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
8 Liquefied gas tankers
Table 7 Ship type notation for liquefied gas tankers
Class notation
Qualifier
Purpose
Application
Tanker for liquefied gas
Mandatory:
yes
Design requirements:
Pt.5 Ch.7
<None>
Carriage of liquefied gas
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Tanker for C
Mandatory:
yes
Design requirements:
Pt.5 Ch.7
FIS survey requirements:
<None>
Carriage of specific type of
liquified gas. C denotes the
type of cargo for which the
ship is classed
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Tanker for C will be
considered in each case,
depending on the nature of
the cargo to be carried.
Mandatory for ships
dedicated for transport of
specific product(s) as in
Pt.5 Ch.7 Sec.19
Page 16
Part 1 Chapter 2 Section 3
Class notation
Qualifier
Purpose
Application
Barge for liquefied gas
Mandatory:
yes
Design requirements:
Pt.5 Ch.7
<None>
Carriage of liquefied gas
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Barge for C
Mandatory:
Carriage of specific type of
liquified gas. C denotes the
type of cargo for which the
ship is classed
Barge for C will be
considered in each case,
depending on the nature of
the cargo to be carried.
Mandatory for ships
dedicated for transport of
specific product(s) as in
Pt.5 Ch.7 Sec.19
<None>
Floating storage unit for
liquefied gas to be operated
at a fixed location.
Mandatory for floating
storage units dedicated
for storage of products
given in Pt.5 Ch.7 Sec.19.
Not applicable for units
designed for transportation
of liquefied gas.
<None>
Floating storage unit of
liquefied gas to be operated
at a fixed location, where C
indicates the name or group
of product(s) for which the
FSU is classified for storage.
Mandatory for floating
storage units of specific
product(s) as given in Pt.5
Ch.7 Sec.19. Not applicable
for units designed for
transportation of liquefied
gas.
yes
Design requirements:
Pt.5 Ch.7
<None>
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
FSU for liquefied gas
Mandatory:
yes
Design requirements:
Pt.5 Ch.7 Sec.25
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
FSU for C
Mandatory:
yes
Design requirements:
Pt.5 Ch.7 Sec.25
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
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Class notations
DNV AS
Page 17
Part 1 Chapter 2 Section 3
Class notation
Part 1 Chapter 2 Section 3
9 Compressed gas tankers
Table 8 Ship type notation for compressed gas tankers
Class notation
Qualifier
Purpose
Application
Tanker for compressed
natural gas
Mandatory:
yes
Design requirements:
Carriage of compressed
natural gas
<None>
Pt.5 Ch.8
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
10 Offshore service vessels
Table 9 Ship type notations for offshore service vessels
Class notation
Offshore service vessel
Mandatory:
Qualifier
Purpose
<None>
For vessels providing
services for offshore
installations
+
For services in harsh
weather conditions
no
Design requirements:
Pt.5 Ch.9
Pt.6 Ch.5 Sec.15
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7
Ch.1 Sec.6 [29]
Anchor handling
Towing of floating objects
and handling of anchoring
equipment
Towing
Towing floating objects in
open waters
AHTS
Towing of floating objects,
handling of anchoring
equipment, and platform
supply services
Windfarm maintenance
Maintenance and service of
offshore wind farms
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Application
Compliance with qualifiers
Anchor handling and
Towing and the additional
class notation Platform
supply
Page 18
Standby vessel
Mandatory:
Qualifier
Purpose
Application
Part 1 Chapter 2 Section 3
Class notation
Rescue operations and
standby services
<None>
no
Design requirements:
Pt.5 Ch.9
FIS survey requirements:
Rescue operations and
standby services in harsh
weather conditions, e.g. the
North Sea
S
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
11 Vessels for special operations
Table 10 Ship type notations for vessels for special operations
Class notation
Qualifier
Purpose
Application
Crane vessel
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.2
<None>
Crane operations
<None>
Cable laying
<None>
Pipe laying
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, Pt.7 Ch.1 Sec.4, Pt.7
Ch.1 Sec.6 [6]
Cable laying vessel
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.3
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7
Ch.1 Sec.6 [7]
Pipe laying vessel
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.4
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7
Ch.1 Sec.6 [7]
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Class notations
DNV AS
Page 19
Qualifier
Purpose
Application
Semi–submersible heavy
transport vessel
Mandatory:
yes
Design requirements:
<None>
Carriage of heavy unitized
dry cargo
SAT
Equipped with a saturation
diving system classified by
the Society in compliance
with DNV-RU-OU-0375
Diving systems
Surface
Equipped with a surface
diving system classified by
the Society in compliance
with DNV-RU-OU-0375
Diving systems
Ready
Vessel prepared for
installation of diving
system with the supported
interfaces listed in the
appendix of class
OCS
IACS classed saturation
diving system installed as
per Pt.5 Ch.10 Sec.6 [1.8]
Pt.5 Ch.10 Sec.5
FIS survey requirements:
Designed to load and
unload deck cargo by
temporarily submerging its
cargo deck through ballast
operations
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
DSV
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.6
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7
Ch.1 Sec.6 [9]
Seismic vessel
Mandatory:
<None>
Seismographic research
Requirements to hull
arrangement and strength
A
Seismographic research
Requirements to systems
and equipment
no
Design requirements:
Pt.5 Ch.10 Sec.7
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Well stimulation vessel
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.8
<None>
Well stimulation
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7
Ch.1 Sec.6 [2]
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Class notations
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Page 20
Part 1 Chapter 2 Section 3
Class notation
Fire fighter
Qualifier
<None>
Mandatory:
Application
Fire fighting
I
Fire fighting with active
protection, giving it the
capability to withstand
higher heat radiation loads
from external fires
I+
Fire fighting with active and
passive protection, giving it
the capability to withstand
the higher heat radiation
loads also when the active
protection fails. In addition,
the vessel incorporates a
longer throw length
II
Continuous fire fighting of
large fires and cooling of
structures.
May be assigned in
combination with Fire
fighter (I)
III
Continuous fire fighting of
large fires and cooling of
structures with larger water
pumping capacity and more
comprehensive fire fighting
equipment than for II.
May be assigned in
combination with Fire
fighter (I)
Fire fighting capability
Vessels not specifically built
for fire fighting purposes
but having fire fighting
capabilities in addition to
their regular service
no
Design requirements:
Purpose
Pt.5 Ch.10 Sec.9
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, Pt.7 Ch.1 Sec.4 and Pt.7
Ch.1 Sec.6 [1]
Capability
Icebreaker
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.10
<None>
Ice breaking
<None>
Towing of other vessels by
towlines
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, and Pt.7 Ch.1 Sec.4
Tug
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, Pt.7 Ch.1 Sec.4, Pt.7
Ch.1 Sec.6 [29] and Pt.7 Ch.1
Sec.6 [29]
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Class notations
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Page 21
Part 1 Chapter 2 Section 3
Class notation
Qualifier
Escort tug
Mandatory:
no
F
Application
Steering and manoeuvring
operations of other vessels
by towlines
Escort rating numbers based
on full scale test
Design requirements:
Pt.5 Ch.10 Sec.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3, Pt.7 Ch.1 Sec.4, Pt.7
Ch.1 Sec.6 [29] and Pt.7 Ch.1
Sec.6 [29]
Purpose
N
O
Steering and manoeuvring
operations of other vessels
by towlines
One of the qualifiers F, N
or O is mandatory
Escort rating numbers based
on numerical calculations
Only one of the qualifiers F,
N or O may be assigned
Steering and manoeuvring
operations of other vessels
by towlines
Escort rating numbers
established by another
classification society
(FS, t, v) are escort rating
numbers, where:
FS indicates maximum
transverse steering pull in
ton, exerted by the escort
tug on the stern of the
assisted vessel
(FS, t, v)
t is the time in seconds
required for the change of
the tug's position from one
side to the corresponding
opposite side
Mandatory qualifier
Maximum two sets of
escort rating numbers may
be assigned
For escort tugs with the
qualifier O, the escort
rating number values are
replaced by '-'
v is the speed in knots
at which this pull may be
attained
Dredger
<None>
Dredging
Suction
Suction dredging
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.12
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 22
Part 1 Chapter 2 Section 3
Class notation
Qualifier
Purpose
Application
Part 1 Chapter 2 Section 3
Class notation
Pusher
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.13
<None>
Pushing
<None>
Floating facilities for
reception and processing of
oily water and oil residue
<None>
Carriage of refrigerated
dry cargo and fruit and
vegetables under controlled
atmosphere
<None>
Carriage of refrigerated fruit
juices and similar liquid
cargoes in bulk
<None>
Carriage of potable water in
bulk.
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Slop reception vessel
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.14
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Reefer
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.15
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [4]
Refrigerated fruit juice
carrier
Mandatory:
yes
Design requirements:
Pt.5 Ch.10 Sec.15
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [4]
Tanker for potable water
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.16
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 23
Qualifier
Purpose
Application
Part 1 Chapter 2 Section 3
Class notation
Deck carrier
Mandatory:
no
Design requirements:
Pt.5 Ch.10 Sec.17
<None>
Vessels specially intended
for carrying cargo on deck
only, without a cargo hold.
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
12 Non-self-propelled vessels
Table 11 Ship type notations for non-self-propelled vessels
Class notation
Barge
Qualifier
<None>
Vessels with cargo hold
Hopper
Vessels for dredging
operations with selfunloading through the
bottom
Mandatory:
yes
Design requirements:
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1
Sec.4
Pontoon
Mandatory:
Concrete
<None>
yes
Design requirements:
Pt.5 Ch.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1
Sec.4
Purpose
B
Application
No means of selfpropulsion for transit
Vessels made of concrete
and with cargo hold
Vessels specifically intended
for carriage of cargo on deck
only
Unmanned vessels of
simple box shape intended
for carriage of on-deck
cargo or used as working
platform within restricted
environmental conditions
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
No means of selfpropulsion for transit
Page 24
Table 12 Ship type notations for fishing vessels
Class notation
Fishing vessel
Qualifier
<None>
Mandatory:
no
S
Design requirements:
Purpose
Fishing
Arranged for carriage of fish
in bulk, with shifting boards
in cargo holds
Pt.5 Ch.12
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Stern trawler
Mandatory:
no
Fishing vessel complying
with the requirements of
the Norwegian Maritime
Directorate (NMD)
N
<None>
S
Design requirements:
Fishing
Stern trawling
Arranged for carriage of fish
in bulk, with shifting boards
in cargo holds
Pt.5 Ch.12
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Application
Fishing vessel complying
with the requirements of
the Norwegian Maritime
Directorate (NMD)
N
14 Naval vessels
Table 13 Ship type notations for naval and naval support vessels
Class notation
Qualifier
Purpose
Application
Naval
Mandatory:
yes
Design requirements:
<None>
Naval operations
<None>
For vessels intended to
carry troops, vehicles and
equipment combined with
beach landing operations
Pt.5 Ch.13
Naval flagged vessels and
administered by a national
naval administration
FIS survey requirements:
DNV-RU-NAV Pt.7 Ch.1
Naval landing craft
Mandatory:
yes
Design requirements:
DNV-RU-HSLC Pt.5 Ch.8
FIS survey requirements:
Naval flagged vessels and
administered by a national
naval administration
Lpp < 40 m
DNV-RU-NAV Pt.7 Ch.1
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 25
Part 1 Chapter 2 Section 3
13 Fishing vessels
1 Introduction
1.1 General
1.1.1 Vessels that comply with the requirements provided in Pt.6 may be assigned corresponding additional
class notation as indicated in Table 1 to Table 10 of this section.
1.1.2 Certain additional class notations are mandatory for certain types of installation, features, or
equipment installed; (e.g. Bow loading, Battery(Power), Inert) where the Society has found that these
constitute possible hazards to personnel and/or the vessel. Mandatory additional class notations are indicated
in the tables referred below.
Additional class notations made mandatory for different ship types are also referred in Pt.5.
2 Structural strength and integrity
Table 1 Additional class notations related to structural strength and integrity
Class notation
Qualifier
Purpose
Grab
Mandatory:
yes
1-X
Design requirements:
Pt.6 Ch.1 Sec.1
2-X
Strengthened inner bottom,
and lower part of transverse
bulkhead and longitudinal
bulkhead for grab loading
and unloading with grab
mass X ≥ 10 t.
3-X
Strengthened inner bottom,
and lower part of transverse
bulkhead and longitudinal
bulkhead for grab loading
and unloading with grab
mass X ≥ 20 t.
NA
Mandatory:
HA
Weather deck hatch covers
strengthened for heavy
cargo.
DK
Weather deck strengthened
for heavy cargo.
IB
Inner bottom strengthened
for heavy cargo.
no
Design requirements:
Pt.6 Ch.1 Sec.2
FIS survey requirements:
NA
Mandatory for ships with
freeboard length LLL > 150
m and carrying solid bulk
cargoes having a density ≥
3
1.0 t/m .
Voluntary for other ships.
FIS survey requirements:
Strengthened
Strengthened inner bottom
for grab loading and
unloading with grab mass X
≥ 10 t.
Application
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Cargo holds unloaded with
grab and where additional
protection of lower part of
transverse bulkhead and
longitudinal bulkhead is
found necessary.
Mandatory for Ore carrier
with class notation OC(M)
or OC(H).
Mandatory for ships with
class notation HC(A),
HC(B)or HC(B*).
Voluntary for other ships.
Page 26
Part 1 Chapter 2 Section 4
SECTION 4 ADDITIONAL CLASS NOTATIONS
Qualifier
Purpose
ρ
Tanks or holds strengthened
for heavy liquid, where
ρ denotes the maximum
3
density in t/m in specified
cargo tanks.
A
Strengthened to carry dry
bulk cargoes of density ≥
3
1.0 t/m with specified holds
empty at scantling draught,
in addition to HC(B).
B
Strengthened to carry dry
bulk cargoes of density
3
≥ 1.0 t/m with all holds
loaded, in addition to
HC(C).
Application
HL
Mandatory:
no
Design requirements:
Pt.6 Ch.1 Sec.3
FIS survey requirements:
NA
HC
Mandatory:
yes
Design requirements:
Pt.6 Ch.1 Sec.4
FIS survey requirements:
NA
B*
Strengthened to carry dry
bulk cargoes of density
3
≥ 1.0 t/m with any hold
empty at scantling draught.
C
Strengthened to carry dry
bulk cargoes of density <
3
1.0 t/m .
M
Designed to carry dry bulk
cargoes as described in the
loading manual.
HC with one of the
qualifiers A, B, B*, C or M
are mandatory for:
— General dry cargo
ship designed for
carriage of solid bulk
cargoes, with L ≥ 150
m, having minimum five
cargo holds
— Multi-purpose dry
cargo ship designed
for carriage of solid bulk
cargoes, with L ≥ 150
m, having minimum five
cargo holds
— Bulk carrier without
CSR notation, with L ≥
150 m.
Maximum cargo density
Mandatory:
ρ
Designed for a maximum
3
cargo density ρ in t/m .
Mandatory for ships with
class notation BC(A),
BC(B), HC(A), HC(B) or
HC(B*) designed for a
maximum cargo density <
3
3.0 t/m .
<None>
Ships not designed for
loading and unloading in
multiple ports.
May be applied to ships
with class notation BC(A),
BC(B), BC(C), HC(A),
HC(B) or HC(C).
yes
Design requirements:
Pt.6 Ch.1 Sec.4 and DNV-RUSHIP-CSR Sec.1
FIS survey requirements:
NA
No MP
Mandatory:
no
Design requirements:
Pt.6 Ch.1 Sec.4 and DNV-RUSHIP-CSR Sec.1
FIS survey requirements:
NA
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 27
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
Application
<None>
Ships intended to operate in
alternate block condition.
May be applied to ships
with class notation BC(A)
or HC(A).
M
Strengthened for loading
and unloading in multiple
ports, in addition to OC(H)
notation.
Mandatory for ships with
class notation Ore carrier
with L ≥ 150 m, unless
OC(H) is assigned.
H
Designed to carry ore
cargoes in seagoing
homogeneous loading
conditions.
Mandatory for ships with
class notation Ore carrier
with L ≥ 150 m, unless
OC(M) is assigned.
<None>
Holds may be empty at
maximum draught where n
is the identification number
for each hold that may be
empty.
Mandatory for ships with
class notation BC(A),
HC(A), HC(M), if alternate
loading conditions are
included in the loading
manual.
<None>
Extended scope of fatigue
strength assessment for hull
structural details.
1
Fatigue strength control in
accordance with CSA(FLS1)
and ultimate strength
check based on direct load
calculations.
2
Fatigue strength control in
accordance with CSA(FLS2)
and ultimate strength
check based on direct load
calculations.
Block loading
Mandatory:
no
Design requirements:
Pt.6 Ch.1 Sec.4 and DNV-RUSHIP-CSR Sec.1
FIS requirements:
NA
OC
Mandatory:
yes
Design requirements:
Pt.6 Ch.1 Sec.5
FIS requirements:
NA
Holds n may be empty
Mandatory:
yes
Design requirements:
Pt.6 Ch.1 Sec.4, and DNV-RUSHIP-CSR Sec.1
FIS survey requirements:
NA
Plus
Mandatory:
no
Design requirements:
Pt.6 Ch.1 Sec.6
FIS survey requirements:
NA
CSA
Mandatory:
no
Design requirements:
Pt.6 Ch.1 Sec.7
FIS requirements:
NA
FLS1
Fatigue strength control
based on direct load
calculations.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 28
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
FLS2
Additional fatigue strength
control based on direct
load calculations with
increased scope compared to
CSA(FLS1).
RSD
Mandatory:
yes
<None>
Design requirements:
Structural strength
verification by means
of global finite element
assessments (FEA) for 25
years worldwide operation.
Pt.6 Ch.1 Sec.8
Application
Mandatory for vessels with
class notation Container
ship having one of the
following characteristics:
— novel design
FIS requirements:
— complex structural
arrangement
NA
— L ≥ 290 m
— B ≥ 47 m
— v ≥ 25 kn
X
Structural strength
verification by means of
global FEA for a design
operation time X in years >
25 for worldwide operation.
— hatch coaming built of
NV D47 or NV E47 steel
grades.
Optional for ships with
class notation Container
ship not having the
characteristics above.
Optional for ships with
class notation General
dry cargo ship or Multipurpose dry cargo ship.
NAS, X
SFA, X
Structural strength
verification by means of
global FEA for specific North
Atlantic service NAS and for
a design operation time X in
years ≥ 25.
Additional assessment
for highly utilized hatch
corners applying a more
sophisticated spectral
fatigue analysis for a design
operation time X in years ≥
25.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Optional for ships with
class notation Container
ship.
Page 29
Part 1 Chapter 2 Section 4
Class notation
COAT-PSPC
Mandatory:
Qualifier
Pt.6 Ch.1 Sec.9
C
FIS survey requirements:
Pt.7 Ch.1 Sec.3
CA
D
Application
Dedicated seawater ballast
tanks of all types of
vessels.
B
no
Design requirements:
Purpose
Additional requirements
for corrosion prevention of
tanks and spaces/areas for
newbuildings. The notation
provides compliance with
SOLAS Ch.II-1 Pt.A-1,
Reg. 3-2 and IMO Res.
MSC.215(82), SOLAS
Ch.II-1, Reg. 3-11 and IMO
Res. MSC.288(87).
Cargo oil tanks of crude
oil tankers (corrosion
protection by coating).
Cargo oil tanks of crude
oil tankers (corrosion
protection by alternative
means).
Double side-skin spaces of
bulk carriers.
V
Void spaces of bulk carriers
and oil tankers.
X
Hull side structures specially
evaluated for collision
impacts.
The qualifier X shall be an
integral number between
1 and 6 and denotes the
amount of strengthening of
the side structures against
collisions.
<None>
Fatigue and ultimate hull
girder strength verified
under explicit consideration
of wave induced vibrations
(whipping and springing).
Container ship
TC
Cargo tanks designed for
high temperature cargo with
a maximum design cargo
temperature of TC in °C.
Mandatory for ships with
notation Tanker for
asphalt/bitumen and
other oil tankers intended
for the carriage of liquid
cargo at a temperature
higher than 100°C at
atmospheric pressure.
<None>
Structural strength of
bottom structure is verified
to allow for resting aground
May be applied to ships
with L ≤ 90 m and
designed with a flat
bottom.
COLL
Mandatory:
no
Design requirements:
Pt.6 Ch.1 Sec.10
FIS survey requirements:
NA
WIV
Mandatory:
no
Design requirements:
Pt.6 Ch.1 Sec.11
FIS survey requirements:
NA
Hot
Mandatory:
yes
Design requirements:
Pt.6 Ch.1 Sec.12
FIS survey requirements:
NA
NAABSA
Mandatory:
no
Design requirements:
Pt.6 Ch.1 Sec.13 [3]
FIS requirements:
NA
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 30
Part 1 Chapter 2 Section 4
Class notation
HDS
Mandatory:
Qualifier
35
no
Design requirements:
Pt.6 Ch.1 Sec.14
Purpose
50
Improved collision behaviour
within the cargo hold region
by using higher ductility
steels.
FIS requirements:
Application
Application of steel grade
HD35 in accordance with
Pt.2 Ch.2 Sec.2 [10].
Application of steel grade
HD50 in accordance with
Pt.2 Ch.2 Sec.2 [10].
NA
Guidance note:
L is the rule length as defined in Pt.3 Ch.1 Sec.4.
---e-n-d---o-f---g-u-i-d-a-n-c-e---n-o-t-e---
Table 2 Additional class notations related to vessels in accordance with IACS common structural
rules only
Class notation
Qualifier
Purpose
CSR
Mandatory for:
Mandatory:
yes
Design requirements:
DNV-RU-SHIP-CSR Sec.1
<None>
Vessel designed and built
according to IACS common
structural rules.
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
yes
Tanker for oil, Tanker
for oil products,
A
Strengthened to carry dry
bulk cargoes of density ≥
3
1.0 t/m with specified holds
empty at scantling draught,
in addition to BC(B).
B
Mandatory for ships
Strengthened to carry dry
with class notation Bulk
bulk cargoes of density
carrier with L ≥ 150 m,
3
≥ 1.0 t/m with all holds
unless BC(A) or BC(C) is
loaded, in addition to BC(C).
assigned.
C
Strengthened to carry dry
bulk cargoes of density <
3
1.0 t/m .
Design requirements:
DNV-RU-SHIP-CSR Sec.1
FIS survey requirements:
NA
Bulk carrier with L ≥ 90
m and cross section in
accordance with CSR Pt.1
Ch.1 Sec.1 [1.2.1]
with L ≥ 150 m.
BC
Mandatory:
Application
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Mandatory for ships
with class notation Bulk
carrier with L ≥ 150 m,
unless BC(B) or BC(C) is
assigned.
Mandatory for ships
with class notation Bulk
carrier with L ≥ 150 m,
unless BC(A) or BC(B) is
assigned.
Page 31
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
X
Strengthened for grab
loading and discharging with
grab mass X ≥ 20 t.
Application
Grab
Mandatory:
yes
Design requirements:
DNV-RU-SHIP-CSR Sec.1
Mandatory for ships with
class notation BC(A) or
BC(B).
FIS survey requirements:
NA
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 32
Part 1 Chapter 2 Section 4
Class notation
Table 3 Additional class notations related to propulsion, power generation and auxiliary systems
Class notation
Qualifier
Purpose
Battery
Application
— All-electric vessel, i.e.
all main sources of
power are based on
EES.
Mandatory:
yes
Design requirements:
— Hybrid vessel where
one of the main sources
of power is based on
EES.
Pt.6 Ch.2 Sec.1
FIS survey requirements:
Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1
Sec.4
Power
For vessels where the EES
power is used for electrical
propulsion of the vessel.
— Hybrid vessel having an
operational mode where
the vessel is operating
on EES power only, with
the other main source
of power in standby.
— Hybrid vessel using
the EES system as a
redundant source of
power for main and/
or additional class
notations, e.g. dynamic
positioning.
Safety
For vessels where the
aggregated EES installation
in one EES space has an
rated capacity of 20 kWh or
above and not having the
Battery(Power) notation.
— Hybrid vessels not using
the EES power as a
main source of power.
— Hybrid vessels using
the EES power for only
peak shaving and/or
load levelling.
— Vessels using EES
power solely when
moored.
E0
Mandatory:
no
Design requirements:
Pt.6 Ch.2 Sec.2
<None>
Unattended machinery
space.
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [24]
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 33
Part 1 Chapter 2 Section 4
3 Propulsion, power generation and auxiliary systems
Qualifier
Purpose
Application
ECO
Mandatory:
no
Design requirements:
<None>
Pt.6 Ch.2 Sec.2
Centralised
operated machinery.
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [24]
FC
Mandatory:
Power
Fuel cell installations.
Mandatory where the
fuel cell power is used for
essential, important or
emergency services.
Safety
Fuel cell installations where
the fuel cell power is not
used for essential, important
or emergency users.
Mandatory where the fuel
used is a gas or a liquid
fuel with flash point below
60°C.
ⱱ, ρ, T
Fuel treatment and
conditioning system, where
ⱱ is maximum viscosity in
cSt at 50°C, ρ is maximum
3
density in kg/m of the
fuel oil at 15°C, and T
is minimum outside air
temperature in °C for
which the installations are
approved.
yes
Design requirements:
Pt.6 Ch.2 Sec.3
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Fuel
Mandatory:
no
Design requirements:
Pt.6 Ch.2 Sec.4
FIS survey requirements:
Pt.7 Ch.1 Sec.6
Gas fuelled LNG
Mandatory:
yes
Design requirements:
Pt.6 Ch.2 Sec.5
<None>
LNG fuelled engine
installations.
Mandatory when installed.
Ships designed for future
conversion to an alternative
fuel
Minimum one of the fuel
specific qualifiers are
mandatory.
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Fuel ready
Ammonia
Mandatory:
LFL
no
Design requirements:
LNG
Pt.6 Ch.2 Sec.8
FIS survey requirements:
LPG
NA
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 34
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
Application
LFL fuelled
Mandatory:
yes
Design requirements:
Pt.6 Ch.2 Sec.6
<None>
Low flashpoint liquid fuelled
engine installations.
1
Main and alternative
propulsion is provided by a
common propulsion system
(one propeller, one shaft
and one rudder/steering
gear) with redundant prime
movers or two or more
propellers.
2
Propulsion and steering are
of a redundant design with
two (or more) propellers in
parallel operation.
3
Propulsion and steering are
of a redundant design with
two (or more) propellers
in parallel operation and
separated by watertight
A-60 bulkheads.
x
% of the propulsion power
and where relevant,
associated steering system,
can be restored and
maintained after single
failure.
+
Propulsion power and
steering capacity is
maintained without
disruption upon any single
failure.
D
Ready for installation of a
dry scrubber system.
C
Ready for installation of a
wet closed scrubber system.
H
Ready for installation of a
wet hybrid scrubber system.
O
Ready for installation of a
wet open scrubber system.
Mandatory when installed.
FIS survey requirements:
Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1
Sec.4
RP
Mandatory:
no
Design requirements:
Pt.6 Ch.2 Sec.7
FIS survey requirements:
NA
Scrubber ready
Mandatory:
no
Design requirements:
Pt.6 Ch.2 Sec.9
FIS survey requirements:
NA
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Mandatory for RP(1),
RP(2), and RP(3).
Mandatory, mutually
exclusive qualifiers.
Page 35
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
IL
Ready for in-line installation
of scrubber system with one
individual linear scrubber
unit per consumer.
MI
HS
Structural supports and ship
structures are prepared for
installation of a scrubber
system at newbuilding
stage.
R
Review of the future
scrubber installation system
for compliance according to
relevant class rules.
Complete review according
to main class rules.
Includes piping and
electrical systems. Control
and monitoring verification
is limited.
MISC
An agreed number of
systems and or components
are included from
newbuilding stage and
followed up by the Society
throughout the new building
process.
Certification and installation
of parts of the scrubber
systems before delivery
based on agreement
between owner and yard,
with detailed list provided
to Society for acceptance.
S
The future scrubber
installation complies with
Marpol annex 6 regulation 4
and 14, and MEPC.259(68).
If the Society is authorized
by the flag administration
to issue the IAPP
certificate. Review
according to IMO resolution
MEPC.259(68).
1
Intended for propulsion
systems installed on vessels
with conventional hull forms
and incorporates enhanced
aft bearing performance
during normal and turning
operating conditions.
2
Intended for propulsion
systems requiring additional
calculations to estimate
hydrodynamic propeller
loads during turning
conditions. Typical
installations are vessels with
non-conventional hull forms
such as asymmetric stern,
twin skeg, etc.
Mandatory:
Design requirements:
Mandatory, mutually
exclusive qualifiers.
Ready for installation of
scrubber system with
multiple inlets to one or
more scrubber units.
Shaft align
no
Application
Pt.6 Ch.2 Sec.10
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [31]
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 36
Part 1 Chapter 2 Section 4
Class notation
Qualifier
SRTP
Mandatory:
Application
<None>
Increased safety level of
passenger ships through
more redundant system
arrangements, providing
increased robustness and
fault tolerance.
<None>
Wind assisted propulsion
systems installed on
seagoing ships.
<None>
LPG fuelled engine
installations.
Mandatory when installed.
<None>
Ammonia fuelled engine
installations.
Mandatory when installed.
ER1
Enhanced reliability of
propulsion, steering and
electrical power
ER2
Enhanced reliability of
propulsion, steering and
electrical power with
additional redundancy
EMR1
Enhanced manoeuvring
reliability
EMR2
Enhanced manoeuvring
reliability with enhanced
redundancy
yes
Design requirements:
Purpose
Pt.6 Ch.2 Sec.11
FIS survey requirements:
Mandatory for passengers
ships, SPS ships and naval
vessels in accordance with
Pt.6 Ch.2 Sec.11 [1.4].
NA
WAPS
Mandatory:
no
Design requirements:
Pt.6 Ch.2 Sec.12
FIS survey requirements:
NA
Gas fuelled LPG
Mandatory:
yes
Design requirements:
Pt.6 Ch.2 Sec.13
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Gas fuelled ammonia
Mandatory:
yes
Design requirements:
Pt.6 Ch.2 Sec.14
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
OR
Mandatory:
yes
Design requirements:
Pt.6 Ch.2 Sec.15
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
ER2 is mandatory for
EMR2.
Page 37
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
OP
Operational flexibility and
predictability through
enhanced redundancy and
capacity in auxiliary systems
for propulsion, steering and
electrical power
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Application
Part 1 Chapter 2 Section 4
Class notation
Page 38
Table 4 Additional class notations related to navigation and manoeuvring
Class notation
DYNPOS
Mandatory:
Qualifier
Purpose
AUTS
Dynamic positioning system
with no redundancy.
Includes single DP control
system and manual levers
control back-up.
AUT
Dynamic positioning system
with no redundancy.
Provides higher availability
and robustness compared to
DPS(1).
Includes single DP control
system, single joystick
control system and manual
levers control back-up.
AUTR
Dynamic positioning system
with redundancy in technical
design. Provides higher
availability and robustness
compared to DPS(2).
Includes redundant DP
control system, single
joystick control system and
manual levers control backup.
AUTRO
Dynamic positioning system
with redundancy and
separation in technical
design. Provides higher
availability and robustness
compared to DPS(3).
Includes redundant DP
control system, single
joystick control system and
manual levers control backup. In addition a single
DP control system in a
separated back-up control
space.
no
Design requirements:
Pt.6 Ch.3 Sec.1 and Pt.6 Ch.3
Sec.2
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [12]
Application
Includes redundant DP
control system and single
independent alternative DP
control system and manual
levers control back-up.
E
Dynamic positioning system
with enhanced reliability.
Position and heading keeping
ability meets intentions
comparable to or exceeding
DPS(2).
ER
Dynamic positioning system
with enhanced reliability.
Position and heading keeping
ability meets intentions
comparable to or DPS(2)
and DPS(3) (depending on
which failure mode being
evaluated).
Includes, in addition to the
properties of qualifier E,
fire resistant separation
between redundancy
groups, which in addition
is watertight below main
deck.
A
Annual survey to be carried
out in accordance with scope
for renewal survey.
In combination with
qualifiers AUTR, AUTRO,
E, ER.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Provides flexibility and
increased availability of
power and thrust by use of
connected power systems,
standby start and changeover of generator sets and
thrusters.
Page 39
Part 1 Chapter 2 Section 4
4 Navigation and manoeuvring
Qualifier
Purpose
Application
1
Dynamic positioning
system with no redundancy
corresponding to IMO
guideline IMO MSC/Circ.645
Guidelines for vessels with
dynamic positioning systems
DP equipment class 1.
Includes single DP control
system, single joystick
control system and manual
levers control back-up.
2
Dynamic positioning system
with redundancy in technical
design corresponding to IMO
guideline IMO MSC/Circ.645
Guidelines for vessels with
dynamic positioning systems
DP equipment class 2.
Includes redundant DP
control system, single
joystick control system and
manual levers control backup.
3
Dynamic positioning system
with redundancy and
separation in technical
design corresponding to IMO
guideline IMO MSC/Circ.645
Guidelines for vessels with
dynamic positioning systems
DP equipment class 3.
Includes redundant DP
control system, single
joystick control system and
manual levers control backup. In addition a single
DP control system in a
separated back-up control
space.
A
Annual survey to be carried
out in accordance with scope
for renewal survey.
In combination with
qualifiers 2 and 3.
DPS
Mandatory:
no
Design requirements:
Pt.6 Ch.3 Sec.1
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [12]
NAUT
NAV
Mandatory:
no
OC
Design requirements:
Pt.6 Ch.3
FIS survey requirements:
AW
Pt.7 Ch.1 Sec.6 [13]
OSV
Basic requirements.
Requirements within
bridge design, bridge
instrumentation and
workstation arrangements.
Vessels with NAUT will
comply with the principles
and aims of SOLAS V/15 and
IMO MSC/Circ.982.
INS+
Enhanced multi functional
workstation arrangement
for integrated navigational
systems.
<None>
Requirements within bridge
design covering the basic
principles and aims of
SOLAS V/15 and IMO MSC/
Circ.982.
Enhanced requirements
for vessels operating world
wide.
Enhanced requirements for
vessels operating in coastal
and narrow waters.
Vessels operating as
service vessels for offshore
industry.
Vessels with class notation
NAUT.
NAVI
Mandatory:
no
Design requirements:
Pt.6 Ch.3 Sec.6
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [13]
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 40
Part 1 Chapter 2 Section 4
Class notation
Table 5 Additional class notations related to cargo operations
Class notation
Qualifier
Purpose
Application
Bow loading
Mandatory:
yes
Design requirements:
<None>
Bow loading arrangement.
Mandatory for Tanker for
oil when installed.
<None>
Centralised cargo control for
liquid cargoes.
For vessels with class
notation Tanker for oil or
Tanker for oil products
or Tanker for chemicals.
<None>
Easy loading of cargo holds.
Ore carrier.
<None>
Effective tank cleaning.
<None>
Movable car decks.
Pt.6 Ch.4 Sec.1
FIS survey requirements:
Pt.7 Ch.1 Sec.2
CCO
Mandatory:
no
Design requirements:
Pt.6 Ch.4 Sec.2
FIS survey requirements:
Pt.7 Ch.1 Sec.4
EL
Mandatory:
no
Design requirements:
Pt.6 Ch.4 Sec.3
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [27]
ETC
Mandatory:
no
Design requirements:
Pt.6 Ch.4 Sec.4
FIS survey requirements:
NA
MCDK
Mandatory:
no
Design requirements:
Pt.6 Ch.4 Sec.5
FIS survey requirements:
Pt.7 Ch.1 Sec.2
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 41
Part 1 Chapter 2 Section 4
5 Cargo operations
Qualifier
Purpose
LCS
Mandatory:
<None>
Loading computer system.
Mandatory if a loading
computer calculating
stability and/or hull
strength is installed.
DC
Loading computer system
to assist the master as a
decision aid under damage
conditions.
Optional.
Regasification plant.
Mandatory for vessels fitted
with regasification plant.
yes
Design requirements:
Pt.6 Ch.4 Sec.6
FIS survey requirements:
Application
Pt.7 Ch.1 Sec.6 [19]
REGAS
Mandatory:
yes
Design requirements:
<None>
Pt.6 Ch.4 Sec.7
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [32]
RCP
Mandatory:
no
Design requirements:
Pt.6 Ch.4 Sec.8
X/Y
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [20]
Refrigerated container
stowage positions, where
X represents total number
of certified refrigerated
stowage positions, and
Y is the percentage of
refrigerated containers
carrying fruit/chilled
cargoes. Y shall be at least
20%.
RM
Mandatory:
X°C/Y°C sea
Cargo refrigeration plant,
where X°C is lowest
chamber temperature and Y
°C sea maximum seawater
temperature.
<None>
Route specific container
stowage on long haul as well
as costal voyages based on
weather forecasts.
no
Design requirements:
Pt.6 Ch.4 Sec.9
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [4]
RSCS+
Mandatory:
no
Design requirements:
Pt.6 Ch.4 Sec.10
FIS survey requirements:
Pt.7 Ch.1 Sec.4
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 42
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
Application
STL
Mandatory:
yes
Design requirements:
Pt.6 Ch.4 Sec.1
<None>
Submerged turret loading
system.
Mandatory when installed.
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
VCS
Mandatory:
1
Systems for control of
vapour emission from cargo
tanks and in compliance with
IMO MSC/Circ. 585.
2
Systems for control of
vapour emission from cargo
tanks and in compliance
with IMO MSC/Circ. 585 and
USCG CFR 46 Part 39.
3
Systems for onboard vapour
processing with a minimum
recovery rate of 78% of nonmethane VOC.
B
Additional requirements to
vapour balancing.
no
Design requirements:
Pt.6 Ch.4 Sec.11
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [15]
L, X%
CA
Mandatory:
<None>
Carriage of fruits and
vegetables under controlled
atmosphere.
port.
Carriage of fruits and
vegetables under controlled
atmosphere, using a
portable device.
no
Design requirements:
Pt.6 Ch.4 Sec.12
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [4]
For installations used on
laden voyages only, with
a recovery rate of X% of
NMVOC.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
For vessels with class
notation Tanker for oil or
Tanker for oil products
or Tanker for chemicals
For vessels with class
notation VCS(1) or
VCS(2).
For vessels with class
notation Tanker for oil or
Tanker for oil products
or Tanker for chemicals
May be combined with
VCS(3).
Page 43
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
C
Designates the coverage
of the washing machines
in %. The coverage shall
not be less than 80%. The
inserted value shall be based
on the tank with the lowest
coverage.
S
Designates the stripping
efficiency. I.e. the amount of
residue left in a cargo tank
and associated piping after
discharge and stripping in
3
m . The amount shall not
3
exceed 3 m per cargo tank.
The inserted value shall be
based on the test results
for the tank with the lowest
stripping efficiency.
ITC
Mandatory:
no
Design requirements:
Pt.6 Ch.4 Sec.13
FIS survey requirements:
NA
A
REGAS ready
<None>
C
The unit is prepared
for future regasification
operation and installation
of a regasification plant
on board with an selected
regasification plant design.
No
Design requirements:
Pt.6 Ch.4 Sec.14
FIS survey requirements:
NA
Tanker for oil
Tanker for oil products.
Designates the upward
facing area of horizontal
2
structures and piping in m
where cargo and sludge may
accumulate. The inserted
value shall be based on
the tank with the largest
horizontal area.
The unit is prepared
for future regasification
operation and installation
of a regasification plant
onboard based on general
principles of regasification
plant design. general
principles of regasification
plant design.
Mandatory:
Application
SC
The unit has carried out
sloshing calculations.
SR
Equipped with cargo
containment system of
reinforced configuration.
IP
Increased pressure for cargo
tanks for REGAS operation.
ES
Enhanced safety review.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Gas carriers planned
and partly prepared for
later installation of a
regasification plant in
compliance with class
notation REGAS or
REGAS(ES).
Page 44
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Ready for C
Mandatory:
No
Design requirements:
Pt.6 Ch.4 Sec.15
FIS survey requirements:
NA
<None>
Purpose
Application
Part 1 Chapter 2 Section 4
Class notation
Vessels, which during
the newbuilding phase
are planned for, and
partly prepared for, later
conversion to transport of a
new product.
C denotes the new product
given in Pt.5 Ch.7 Sec.19
Table 2.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 45
Table 6 Additional class notations related to equipment and design features
Class notation
Qualifier
Purpose
Application
Container
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.1
<None>
Equipped for carriage of
containers.
For vessels other than
Container ship.
<None>
For hatchcoverless container
ships, multi-purpose dry
cargo ships and general
cargo ships equipped with
the appropriate facilities to
operate without or with open
hatch covers.
Mandatory for vessels with
class notation Container
ship, General dry cargo
ship or Multi-purpose dry
cargo ship intended for
operating without or with
open hatch covers.
<None>
Onboard crane.
Onboard crane certified by
the Society.
FIS survey requirements:
Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1
Sec.4
Hatchcoverless
Mandatory:
yes
Design requirements:
Pt.6 Ch.5 Sec.2
FIS survey requirements:
Pt.7 Ch.1 Sec.2
Crane
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.3
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [6]
F
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.4
FIS survey requirements:
A
Additional fire protection in
accommodation area.
C
Additional fire protection in
cargo area.
M
Additional fire protection for
machinery spaces - general.
Pt.7 Ch.1 Sec.6 [11]
M-P
Additional measures for
machinery spaces - fire
prevention.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 46
Part 1 Chapter 2 Section 4
6 Equipment and design features
FCS
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.4 and Pt.6 Ch.5
Sec.23
Qualifier
A
Additional fire protection in
accommodation area.
C
Additional fire protection in
cargo area.
M
Additional fire protection for
machinery spaces - general.
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [11]
HELDK
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.5
M-P
Additional measures for
machinery spaces - fire
prevention.
HA
Hazard identification
assessment of container
fires.
FD
Enhanced fire detection
systems for container cargo
areas.
FD+
Enhanced fire detection
systems, with container
identification, for container
cargo areas.
FF
Enhanced fire fighting
systems for container cargo
areas.
HF
Fire fighting by container
hold flooding for container
cargo areas.
<None>
Additional requirements to
vessel safety.
H
Additional requirements to
helicopter safety.
F
Additional requirements to
helicopter facility.
CAA-N
Application
Ships with the class
notation Container ship.
Ships with the class
notation Container ship
and at least one of the
qualifiers FD, FD+, FF or
HF.
Ships with the class
notation Container ship
and the notation FCS(C).
Helicopter deck.
S
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [8]
Purpose
Helicopter facility has been
evaluated for additional
requirements specified by
the Norwegian Civil Aviation
Authorities.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 47
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
Application
SF
Mandatory:
no
Design requirements:
<None>
Compliance with
requirements to damage
stability.
<None>
Ships carrying special
personnel who are neither
crew members nor
passengers.
<None>
Inert gas system.
Pt.6 Ch.5 Sec.6
Offshore service vessel
FIS survey requirements:
NA
SPS
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.7
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [26]
Inert
Mandatory:
yes
Design requirements:
Pt.6 Ch.5 Sec.8
Mandatory if installed on
Tanker for oil DWT < 8
000 ton.
FIS survey requirements:
Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1
Sec.4
LFL
Mandatory:
1
Designed for carriage of
liquid with flashpoint lower
than 60°C.
2
Designed for carriage of
liquid with flashpoint lower
than 43°C.
B
Arranged for carriage of solid
dangerous goods in bulk
in compliance with SOLAS
Reg.II-2/19.
P
Arranged for carriage
of dangerous goods in
packaged form in compliance
with SOLAS Reg.II-2/19.
yes
Design requirements:
Pt.6 Ch.5 Sec.9
FIS survey requirements:
Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1
Sec.4
DG
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.10
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [5]
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Mandatory for vessels
intended for transportation
of liquids with flashpoint
below 60°C in bulk to and
from offshore installations
except ship types Tanker
for oil and Tanker for
chemicals.
Page 48
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
Application
DBC
Mandatory:
<None>
Arranged for carriage of
solid dangerous goods in
bulk in compliance with the
technical provisions of the
IMSBC code.
<None>
Recovered oil reception and
transportation.
All ships except Tanker for
oil.
<None>
Recovered oil reception and
transportation for oil with
flashpoint above 60°C.
All ships except Tanker for
oil.
<None>
Single point mooring.
Mandatory for Tanker for
oil when installed.
no
Design requirements:
Pt.6 Ch.5 Sec.10
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [5]
OILREC
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.4 and Pt.7 Ch.1 Sec.6 [3]
OILREC FP> 60°C
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.11
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.4 and Pt.7 Ch.1 Sec.6 [3]
SPM
Mandatory:
yes
Design requirements:
Pt.6 Ch.5 Sec.12
FIS survey requirements:
NA
ESV
Mandatory:
DP
no
Design requirements:
Pt.6 Ch.5 Sec.13
TAM
Enhanced verification of
thruster assisted mooring or
automatic thruster assisted
mooring systems.
PMS
Enhanced verification of
power management system.
SPT
Enhanced verification of
steering, propulsion and
thruster system.
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [28]
Enhanced verification of
dynamic positioning.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 49
Part 1 Chapter 2 Section 4
Class notation
Qualifier
ICS
Enhanced verification of
integrated control and
monitoring system.
DRILL
Enhanced verification of
drilling control system.
BOP
no
Enhanced verification of
crane control system.
HIL-IS
“Hardware-In-theLoop” (HIL) testing where
HIL test package is provided
by independent HIL supplier.
HIL-DS
“Hardware-In-theLoop” (HIL) testing where
HIL test program package
and HIL test package report
are provided by independent
HIL supplier and HIL test
simulator package is
provided by the organization
delivering the HIL target
system.
<None>
Equipped with dedicated
gas fuel transfer equipment
for supply of bunker to gas
fuelled ships on a regular
basis.
VR-x
Equipped for handling of
excess vapour return from
the receiving ship with
vapour recovery capacity of
x kW.
EPC
Equipped with enhanced
positioning control system.
Design requirements:
Pt.6 Ch.5 Sec.14
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [37]
TC
Equipped with enhanced
transfer control system.
AA
Ship designed for carriage
of either oil cargoes, liquid
carbon dioxide- and liquid
nitrogen and/or dry mudand cement.
Platform supply
Mandatory:
yes
Design requirements:
Pt.6 Ch.5 Sec.15
Application
Enhanced verification of
blow out prevention system.
Crane
Gas bunker
Mandatory:
Purpose
Part 1 Chapter 2 Section 4
Class notation
FIS survey requirements:
P
Ship designed for carriage of
pollution hazards cargoes.
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
S
Ship designed for carriage of
safety hazardous cargoes.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Tanker for liquefied
gas or Tanker for C and
barges specifically intended
for carriage of liquefied
gas.
Mandatory for vessels
intended to carry cargoes
covered by Pt.6 Ch.5
Sec.15.
Page 50
Walk2work
Mandatory:
Qualifier
Purpose
T
Ship designed for carriage of
toxic cargoes.
<None>
Vessel with permanent
installed gangway where the
gangway is certified by DNV.
no
Design requirements:
Pt.6 Ch.5 Sec.16
FIS survey requirements:
Operability
Denotes the maximum sea
conditions in which the
offshore gangway system
may be safely operated.
<None>
Vessel intended to have
gangway system installed
onboard. The gangway is
outside the scope of the
notation.
Operability
Denotes the maximum sea
conditions in which the
offshore gangway system
may be safely operated.
Pt.7 Ch.1 Sec.6 [33]
Walk2workready
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.16
FIS survey requirements:
NA
Application
Part 1 Chapter 2 Section 4
Class notation
ADW
Mandatory:
no
Design requirements:
<None>
Pt.6 Ch.5 Sec.17
Ships intended for anchoring
in deep and unsheltered
water.
FIS survey requirements:
NA
BCLIQ
Mandatory:
Cat1
Ships strengthened for
liquefaction in design
category 1 group A cargo.
Cat2
Ships strengthened for
liquefaction in design
category 2 group A cargo.
yes
Design requirements:
Pt.6 Ch.5 Sec.18
FIS survey requirements:
NA
BCLIQ with one of
qualifiers, either Cat1 or
Cat2, is mandatory for
ships intended for the
carriage of solid bulk cargo
shipped at a moisture
content in excess of its
transportable moisture limit
which may liquefy during a
voyage.
RO/RO
Mandatory:
no
Design requirements:
Pt.6 Ch.5 Sec.19
<None>
Designed and arranged for
roll-on and roll-of cargo
handling and transportation
of rolling vehicles.
For ships other than RO/
RO ship and Car carrier.
FIS survey requirements:
NA
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 51
Qualifier
Gas power plant
Mandatory:
<None>
yes
Design requirements:
Vessels arranged with a gas
fired power plant for the
production and export of
electrical energy.
Performance
Optional qualifier for Gas
power plant.
P
Rated electrical power, P,
[MW] delivered from the
power plant.
Optional qualifier when
Performance is assigned.
V
Supply voltage, V [kV]
delivered from the power
plant.
Optional qualifier when
Performance is assigned.
f
Supply frequency, f, [Hz]
delivered from the power
plant.
Optional qualifier when
Performance is assigned.
Pt.7 Ch.1 Sec.6 [34]
Cyber secure
Mandatory:
Initial level of cyber
security based on IMO
resolution MSC.428(98)
and MSC-FAL.1/Circ.3.
<None>
no
Design requirements:
Pt.6 Ch.5 Sec.21
FIS survey requirements:
Essential
Pt.7 Ch.1 Sec.6 [36]
Advanced
Essential level of cyber
Establish barriers to prevent, security for the vessel's
essential systems.
mitigate and respond to
cyber-attacks.
Advanced level of cyber
security for the vessel's
essential systems.
Selected level of cyber
security for specified
system(s).
+
Smart
Mandatory:
no
Application
Additional performance
requirements related to
the rated electrical power
delivered from the power
plant.
Pt.6 Ch.5 Sec.20
FIS survey requirements:
Purpose
OPH
Design requirements:
Pt.6 Ch.5 Sec.24
FIS survey requirements:
NA
OPM
Operations and maintenance
enhancements related
to structural integrity
management and
performance of hull and
structure.
Operations and maintenance
enhancements related to
maintenance management
of machinery and
equipment, condition
monitoring, systems and
vessel performance.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Requires a minimum of
three (3) enhancements for
each qualifier. One qualifier
is required to obtain the
class notation Smart.
Page 52
Part 1 Chapter 2 Section 4
Class notation
Qualifier
EEN
Purpose
Application
Part 1 Chapter 2 Section 4
Class notation
Energy efficiency
and environmental
enhancements related to
fuel consumption, emission
and noise.
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Class notations
DNV AS
Page 53
Table 7 Additional class notations related to cold climate
Class notation
Ice
Mandatory:
Qualifier
Purpose
1A*F
High powered vessels for
regular traffic in heavy Baltic
ice.
Vessels constructed
according to FinnishSwedish ice rules.
1A*
Vessels intended for
navigation in ice-infested
waters.
Constructed according to
Finnish- Swedish ice rules
(1A Super). Ice thickness
1.0 m.
1A
Vessels intended for
navigation in ice-infested
waters.
Constructed according to
Finnish- Swedish ice rules
(1A). Ice thickness 0.8 m.
1B
Vessels intended for
navigation in ice-infested
waters.
Constructed according to
Finnish- Swedish ice rules
(1B). Ice thickness 0.6 m.
1C
Vessels intended for
navigation in ice-infested
waters.
Constructed according to
Finnish- Swedish ice rules
(1C). Ice thickness 0.4 m.
no
Design requirements:
Pt.6 Ch.6 Sec.2 and Pt.6 Ch.6
Sec.3
FIS survey requirements:
NA
C
Vessels intended for
navigation in light ice
conditions.
E
Vessels intended for
navigation in light localised
drift ice.
Polar
Operation in ice free waters
within polar waters.
Mandatory:
no
Design requirements:
Application
C
Pt.6 Ch.6 Sec.5
FIS survey requirements:
NA
Operation in open waters
within polar waters.
Operation in ice conditions
less severe than those
included in categories A and
B within polar waters.
B
Operation in other ice
conditions within polar
waters as listed in Pt.6 Ch.6
Sec.5 Table 6.
A
Operation in other ice
conditions within polar
waters as listed in Pt.6 Ch.6
Sec.5 Table 6.
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Class notations
DNV AS
Page 54
Part 1 Chapter 2 Section 4
7 Cold climate
Qualifier
PST
PC
Mandatory:
Purpose
Polar service temperature,
PST, in °C.
Year-round operation in all
polar waters.
2
Year-round operation in
moderate multi-year ice
conditions.
3
Year-round operation in
second-year ice which
may include multi-year ice
inclusions.
4
Year-round operation
in thick first-year ice
which may include old ice
inclusions.
Pt.6 Ch.6 Sec.7
FIS survey requirements:
NA
Winterized
Mandatory:
5
6
Summer/autumn operation
in medium first-year ice
which may include old ice
inclusions.
7
Summer/autumn operation
in thin first-year ice
which may include old ice
inclusions.
<None><<
Design requirements:
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [23]
Vessels intended for
navigation in ice-infested
polar waters.
Year-round operation in
medium first-year ice
which may include old ice
inclusions.
no
Pt.6 Ch.6 Sec.4
Mandatory when the ship
is intended to operate
in low air temperature
where mean daily low
temperature (MDLT) is
below -10°C.
1
no
Design requirements:
Application
BST
Occasional operation in cold
climate for short periods.
For ambient temperatures
down to -20ºC.
Regular operation in cold
climate for an extended
period of time where
BST is the Baltic service
temperature in °C.
For ambient temperatures
colder than -20ºC.
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Class notations
DNV AS
Page 55
Part 1 Chapter 2 Section 4
Class notation
Qualifier
DAT-B
Mandatory:
yes
Design requirements:
Pt.6 Ch.6 Sec.6
FiS requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
t
DAT
Mandatory:
yes
Design requirements:
Pt.6 Ch.6 Sec.6
FIS survey requirements:
NA
DAV
Mandatory:
Purpose
Providing material
requirements for vessels
intended to operate in low
air temperatures during
winter in the northern Baltic
Sea, or in areas with similar
conditions. t denotes the
lowest mean daily average
air temperature in °C.
Mandatory for vessels
intended to operate
in areas with low air
temperatures, i.e. design
temperatures colder than
-10°C.
Providing material
requirements for vessels
intended to operate in low
air temperatures in polar
waters. t denotes the lowest
mean daily average air
temperature in °C.
Mandatory for vessels
intended to operate in
polar waters with low air
temperatures, i.e. design
temperatures colder than
-10°C.
PC(1)
Year-round operation in all
polar waters.
PC(2)
Year-round operation in
moderate multi-year ice
conditions.
PC(3)
Year-round operation in
second-year ice which
may include multi-year ice
inclusions.
PC(4)
Year-round operation
in thick first-year ice
which may include old ice
inclusions.
no
Design requirements:
Pt.6 Ch.6 Sec.8
FIS survey requirements:
NA
Application
PC(5)
For vessels intended to
operate with stern first in ice
infested polar waters.
Year-round operation in
medium first-year ice
which may include old ice
inclusions.
PC(6)
Summer/autumn operation
in medium first-year ice
which may include old ice
inclusions.
PC(7)
Summer/autumn operation
in thin first-year ice
which may include old ice
inclusions.
Normally capable of
navigating in difficult ice
conditions without the
assistance of icebreakers.
Ice(1A*)
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Class notations
DNV AS
Page 56
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
Application
Ice(1A)
Capable of navigating in
difficult ice conditions,
with the assistance
of icebreakers when
necessary.
Ice(1B)
Capable of navigating in
moderate ice conditions,
with the assistance
of icebreakers when
necessary.
Ice(1C)
Capable of navigating
in light ice conditions,
with the assistance
of icebreakers when
necessary.
Icebreaker
For vessels intended to
operate as icebreaker with
stern first in ice infested
polar waters.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Ice management and
escort services.
Page 57
Part 1 Chapter 2 Section 4
Class notation
Table 8 Additional class notations related to environmental protection and pollution control
Class notation
Qualifier
Purpose
BWM
m denotes method of
exchange as follows:
Mandatory:
no
E[m]
Ballast water exchange.
d - dilution method.
Pt.6 Ch.7 Sec.1
Pt.7 Ch.1 Sec.6 [21]
Clean
Mandatory:
T
Arrangements for controlling
and limiting operational
emissions and discharges.
Design
Additional design
requirements for protection
against accidents and for
limiting their consequences.
Tier III
Compliance with the NOx
emission requirements of
Tier III according to MARPOL
Annex VI, Regulation 13.
Design requirements:
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [16]
ECA
Mandatory:
SOx-A
no
Design requirements:
Pt.6 Ch.7 Sec.3
FIS survey requirements:
Ballast water treatment.
<None>
no
Pt.6 Ch.7 Sec.2
SOx-P
NA
Designed to operate all
machinery on marine
distillate fuel.
Designed to operate
machinery components
used while in port on marine
distillate fuel.
ER
Mandatory:
yes
Design requirements:
s - sequential method.
f - flow-through method.
Design requirements:
FIS survey requirements:
Application
<None>
Pt.6 Ch.7 Sec.7
Installations for the
reduction of NOx or SOx
emissions by novel means.
FIS requirements:
Pt.7 Ch.1 Sec.2 and Pt.7 Ch.1
Sec.4
Fuel and lubrication oil
system and arrangements
for meeting regulations in
emission control areas.
Applicable for emission
reduction system for
NOx and/or SOx by novel
means which does not fall
under any of the defined
additional qualifiers. Such
systems shall generally
comply with the principles
of these rules.
Additional qualifiers for NOx reduction systems.
SCR
Installations for the
reduction of NOx emissions
by selective catalytic
reduction systems.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Applicable for all vessels
where SCR systems are
installed in one or more
exhaust lines.
Page 58
Part 1 Chapter 2 Section 4
8 Environmental protection and pollution control
Qualifier
Purpose
Application
Applicable for all vessels
Installations for the
where EGR systems are
reduction of NOx emission by
installed in one or more
recirculation of exhaust gas.
exhaust lines.
EGR
Installations for the
reduction of NOx emissions
certified in compliance
with the NOx emission
requirements of Tier III
according to MARPOL Annex
VI, regulation 13.
TIER III
Additional qualifiers for SOx reduction systems
Installations for removal
of SOx by use of seawater
spray without means for
recirculation (open loop
scrubber system).
Applicable for all vessels
where open loop scrubber
systems are installed.
EGCS closed
Installations for removal of
SOx by use of water spray in
a closed circulation system
(closed loop system).
Applicable for all vessels
where closed loop scrubber
systems are installed.
EGCS hybrid
Installations for removal
of SOx by use of sea- or
freshwater spray in open or
closed circulation (open and
closed loop system).
Applicable for all vessels
where any configuration of
hybrid scrubber systems
are installed.
EGCS dry
Installations for removal of
SOx by use of a dry medium
through which the exhaust
stream is passed.
Applicable for all vessels
where dry scrubber
systems are installed.
EGCS open
Optional additional qualifiers
Enhanced
Zero Discharge (x)
Installations with enhanced
availability.
Additional qualifier defining
emission reduction systems
as a system supporting
the main functions of the
vessel according to Pt.4
Ch.1.
Installations for removal
of SOx with holding tank
capacity for (x) days.
Additional qualifier for
closed and hybrid exhaust
gas cleaning (EGC) systems
with holding tank designed
for 100% EGC system load
for (x) days.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 59
Part 1 Chapter 2 Section 4
Class notation
Qualifier
Purpose
Application
Recyclable
Mandatory:
no
Design requirements:
<None>
Pt.6 Ch.7 Sec.4
Inventory of hazardous
materials.
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [30]
Shore power
Mandatory for the following
installations:
Mandatory:
yes
Design requirements:
<None>
Electric shore connections.
Pt.6 Ch.7 Sec.5
FIS survey requirements:
NA
Silent
Mandatory:
no
Design requirements:
Pt.6 Ch.7 Sec.6
FIS survey requirements:
NA
Quiet
Mandatory:
Vessels using acoustical
equipment.
S
Vessels conducting seismic
surveys.
F
R
Vessels complying with
specified maximum
underwater noise emission.
Fishing vessel.
Research vessel.
E
Vessels demonstrating a
controlled environmental
noise emission.
I-qrn
External airborne noise
emission during idle
condition while berthed.
Design requirements:
FIS survey requirements:
— vessels with LV shore
connection of a power
rating greater than or
equal to 1 MVA.
A
no
Pt.6 Ch.7 Sec.8
— vessels with HV shore
connection
W-qrn
Requirements related to
external airborne noise
emission of vessels in port.
External airborne noise
emission during working
condition while berthed.
NA
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Class notations
DNV AS
Page 60
Part 1 Chapter 2 Section 4
Class notation
Table 9 Additional class notations related to living and working conditions
Class notation
COMF
Mandatory:
Qualifier
Habitability requirements to
indoor climate.
All vessel types.
V-crn
Habitability requirements
to noise and whole-body
vibration.
All vessel types except
yachts and naval vessels.
Y-S
Habitability requirements
to noise and whole-body
vibration.
Yachts and superyachts.
Y-M
Habitability requirements
to noise and whole-body
vibration.
Megayachts.
NAV
Habitability requirements
to noise and whole-body
vibration.
Naval vessels.
Pt.6 Ch.8 Sec.1
FIS survey requirements:
NA
Application
C-crn
no
Design requirements:
Purpose
VIBR
Mandatory:
no
Design requirements:
<None>
Limitations to vibration
levels.
<None>
Increased safety level
for crew members and
stevedores engaged in the
handling and securing of
containers.
Pt.6 Ch.8 Sec.2
FIS survey requirements:
NA
SAFELASH
Mandatory:
no
Design requirements:
Pt.6 Ch.8 Sec.3
FIS survey requirements:
Container ships and
vessels assigned the
additional class notation
Container.
NA
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 61
Part 1 Chapter 2 Section 4
9 Living and working conditions
Table 10 Additional class notations related to survey arrangement
Class notation
Qualifier
Purpose
Application
BIS
Mandatory:
no
Design requirements:
<None>
Pt.6 Ch.9 Sec.1
Built for in-water survey
of the vessel bottom and
related items.
FIS survey requirements:
Pt.7 Ch.1 Sec.5 [1.6]
ESP
Mandatory for vessels with
class notations:
Mandatory:
Bulk carrier
yes
Tanker for oil
Design requirements:
Pt.6 Ch.9 Sec.2
FIS survey requirements:
Pt.7 Ch.1 Sec.2, Pt.7 Ch.1
Sec.3 and Pt.7 Ch.1 Sec.4
<None>
Vessels subject to
an enhanced survey
programme.
Bulk carrier or tanker for
oil
and
Tanker for chemicals
Tanker for C
having integral tanks
intended for carriage of
liquid chemicals in bulk in
accordance with the IBC
code.
HMON
Mandatory:
Sensor monitoring
acceleration along one axis.
An
no
Design requirements:
Pt.6 Ch.9 Sec.3
Statistical back-up and
trigged time series to
be sent annually to the
Society.
B
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [14]
C
Hull monitoring at various
locations to reduce the need
for internal survey through
increased focus on hull
stress warnings. n denotes
number of sensors.
D
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Online link to loading
computer which is
continuously updating the
loading condition.
Online data link between
hull monitoring system on
board to office ashore. The
link shall make it possible
to operate the system
from an onshore computer,
perform maintenance and
transfer data.
Page 62
Part 1 Chapter 2 Section 4
10 Survey arrangements
Qualifier
Purpose
Application
En
Sensor monitoring the
propulsion shaft(s) output/
rpm.
Gn
Sensor monitoring global
hull strain.
Hn
Sensor monitoring the
liquid motion pressures in
tanks (sloshing).
In
Sensors for ice thickness
measurement.
IRM
Ice response monitoring,
further described by Ln.
Ln
Sensor monitoring local hull
strain.
M
Device for monitoring of
hull rigid body motions (six
degrees of freedom).
Nn
Sensor to measure noise.
On
Navigation sensors
(position fixing system
(e.g. GPS), speed log, gyro
compass, rudder angle,
etc.).
Pn
Sensor monitoring the sea
pressure acting on the hull.
PR
Parametric roll sensors
based on roll and pitch
based on Mn.
Rn
Rudder response
monitoring.
Device for monitoring the
sea-state.
S
Tn
Sensor monitoring the
temperature.
Vn
Velocimeter: sensor
monitoring velocity along
one axis or about an axis.
VDVn
Free axial sensors for
estimation of vibration dose
value.
Wn
Wind sensor for wind speed
and wind heading.
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Class notations
DNV AS
Page 63
Part 1 Chapter 2 Section 4
Class notation
TMON
Mandatory:
Qualifier
Purpose
Oil lubricated
no
Design requirements:
Closed loop water
Pt.6 Ch.9 Sec.4
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [17]
Open loop water
BMON
Mandatory:
no
Tail shaft monitoring enables
operators to continuously
observe and assess the
condition of the shaft(s)
which may extend interval
between tail shaft surveys/
tail shaft withdrawal.
<None>
Boiler monitoring reduces
the need for internal survey
at every alternate survey
through increased focus on
water management.
+
Automation of boiler feed
water testing and treatment.
Design requirements:
Application
Oil lubricated tail-shaft
stern tube bearing.
Water lubricated tail shaft
stern tube bearing with
closed loop.
Water lubricated tail shaft
stern tube bearing with
open loop.
Pt.6 Ch.9 Sec.5
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [25]
CMON
Mandatory:
no
Design requirements:
<None>
Construction monitoring of
hull critical locations.
<None>
Underwater inspection in lieu For permanently moored
of drydocking.
vessels.
<None>
Extended and flexible
scheduling of internal cargo
tank(s) survey.
Pt.6 Ch.9 Sec.6
FIS survey requirements:
Pt.7 Ch.1 Sec.4
UWILD
Mandatory:
no
Design requirements:
Pt.6 Ch.9 Sec.7
FIS survey requirements:
Pt.7 Ch.1 Sec.5 [1.5] and Pt.7
Ch.1 Sec.5 [1.8]
ASP
Mandatory:
no
Design requirements:
Pt.6 Ch.9 Sec.8
FIS survey requirements:
MRU
Motions reference unit
installed.
Liquefied gas storage units
(e.g. FSU and FSRU).
Pt.7 Ch.1 Sec.6 [35]
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 64
Part 1 Chapter 2 Section 4
Class notation
Qualifier
ASP ready
Mandatory:
<None>
no
Design requirements:
Pt.6 Ch.9 Sec.8
FIS survey requirements:
MRU
Purpose
Prepared for extended
and flexible scheduling
of internal cargo tank(s)
survey.
Application
Liquefied gas storage units
(e.g. FSU and FSRU).
Motions reference unit
(MRU) installed.
NA
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 65
Part 1 Chapter 2 Section 4
Class notation
Table 11 Additional class notations related to naval vessels
Class notation
Qualifier
Purpose
Application
NAUT
Mandatory:
no
Design requirements:
Pt.6 Ch.10 Sec.1
Basic requirements to
bridge design, bridge
instrumentation, and
workstation arrangement.
Navy
FIS survey requirements:
Mandatory:
Naval operations and naval
support operations.
<None>
yes
Design requirements:
Naval requirements for
arrangements, loads and hull
strength.
Hull
Pt.5 Ch.13 Sec.3
FIS survey requirements:
DNV-RU-NAV Pt.7 Ch.1
— vessel of less than 24
metres LOA
— submarines.
DNV-RU-NAV Pt.7 Ch.1 Sec.6
[4]
Naval support
All naval flagged vessels
and administered
by a national naval
administration, except:
Naval requirements for
stability.
STAB
Naval requirements for
piping, machinery, electrical,
control and monitoring.
System
Fire
Naval requirements for fire
safety.
EVAC
Naval requirements for safe
evacuation.
Naval flagged vessels and
administered by a national
naval administration.
Naval requirements for
radiation hazards.
RADHAZ
EMC
Naval requirements
for electromagnetic
compatibility.
SAM
Naval requirements
for storage rooms for
ammunition.
11.1 General
11.1.1 The class notation Naval support may be combined with ship type notations in Pt.5.
11.1.2 The qualifiers to Naval support are optional.
11.1.3 Any combination of qualifiers for Naval support are allowed. For example Naval support(Hull,
STAB, Fire).
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 66
Part 1 Chapter 2 Section 4
11 Naval
Table 12 Additional class notations related to digital features
Class notation
Qualifier
Purpose
P
A proprietary data collection
infrastructure to facilitate
the collection and exchange
of data.
Based on customised
requirements defined by a
specific data collection use
case.
S
A standardised data
collection infrastructure to
facilitate the collection and
exchange of data.
Based on standardised
requirements defined by a
specific standard.
AVA
Fleet in service verification
of specified target systems
can (partly or fully) be
based on data-driven
verification by application
of an algorithm-based
verification agent (AVA).
BITE
Fleet in service verification
of specified target systems
can (partly or fully) be based
on data-driven verification
by application of built in test
equipment.
DSA
Fleet in service verification
of specified target systems
can (partly or fully) be based
on data-driven verification
by application of digital
survey applications.
DT
Fleet in service verification
of specified target systems
can (partly or fully) be based
on data-driven verification
by application of digital
twins.
SVS
Fleet in service verification
of specified target systems
can (partly or fully) be
based on data-driven
verification by application of
target system self verifying
functionality.
D-INF
Mandatory:
no
Design requirements:
Pt.6 Ch.11 Sec.1
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [38]
DDV
Mandatory:
no
Design requirements:
Pt.6 Ch.11 Sec.2
FIS survey requirements:
Pt.7 Ch.1 Sec.6 [39]
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Application
Page 67
Part 1 Chapter 2 Section 4
12 Digital features
Qualifier
Purpose
Onboard arrangement
for live streaming of
activities at bridge, deck,
accommodation, engine
spaces, and control rooms.
The coverage may also
include specified confined
spaces, like tanks and
boilers.
<None>
REW
Mandatory:
no
Design requirements:
Pt.6 Ch.11 Sec.3
HMI1
Application
Connectivity, tools and
infrastructure enabling
direct online witnessing
from a remote location.
FIS survey requirements:
NA
Including arrangement
for online sharing of
onboard target systems
screens/views, to a remote
witnessing centre.
Including arrangement for
online sharing and access to
onboard target systems HMI
from a remote witnessing
centre to enable remote
control of the target system
HMI interface.
HMI2
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 68
Part 1 Chapter 2 Section 4
Class notation
1 Service area notation
1.1 General
1.1.1 The service area notation R followed by a number or a letter will be assigned to vessels with modified
requirements to arrangement, equipment or scantlings, in relation to vessels built for unrestricted trade.
The service area restrictions, given in nautical miles and representing the maximum distance from nearest
port or safe anchorage, are given in Table 1 of this section. For the various service area notations the
restrictions are related to the zones, areas and seasonal periods as defined in the International Convention
on Load Lines, 1966, Annex II.
The service area notation RE is limited to enclosed waters such as fjords, ports, rivers and lakes.
The service area restrictions as related to the assigned service area notation will be included in the appendix
to the class certificate.
Table 1 Service area restrictions
Service area
notations
Winter
Summer
Tropical
Corresponding
significant wave
1)
height HS
in meters
R0
250
No restrictions
No restrictions
Not applicable
R1
100
200
300
0.9Cw
R2
50
100
200
0.8Cw
R3
20
50
100
0.6Cw
R4
5
10
20
0.5Cw
RE
1)
Seasonal zones (nautical miles)
Enclosed waters
0.4Cw
Cw is the wave coefficient as defined in Pt.3 Ch.4 Sec.4. The significant wave height (HS) assumes reduced speed in
head sea and that heading is changed when necessary to avoid resonance and extreme rolling.
1.1.2 Modified requirements related to the various service area notations are given in the relevant sections
of the rules. The modifications may affect:
—
—
—
—
design hull girder loads
design pressures on shell, weather decks, superstructures and deckhouses
anchoring and mooring equipment
stability.
1.1.3 The flag administration, the domestic requirements of which are being applied under the provision of
Ch.1 Sec.2 [1.3.5] (local trade), shall be indicated in parentheses after the service area notation, by using
lower-case country codes in accordance with ISO 3166, R2(nor), should the flag administration be Norway
or R2(usa) should the flag administration be U.S.A. etc.
1.1.5 Other service restrictions or operational limits included in the design assumptions for a vessel will be
stated in the appendix to the class certificate and/or on special signboards.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 69
Part 1 Chapter 2 Section 5
SECTION 5 SERVICE AREA
1 General
1.1
For a vessel with purpose, function or feature not covered by existing notations, this may be recognized by
assignment of a descriptive notation.
1.2
The descriptive notation may be assigned upon request to the Society.
1.3
There are no class requirements associated with a descriptive notation.
1.4
The descriptive notation will be identified by use of square brackets, e.g. [Research vessel].
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 70
Part 1 Chapter 2 Section 6
SECTION 6 DESCRIPTIVE NOTATION
Part 1 Chapter 2 Changes – historic
CHANGES – HISTORIC
July 2020 edition
Amendments October 2020, entering into force 1 January 2021
Topic
New class notations
Reference
Sec.4
Description
The following notations are new:
— Smart
— D-INF
— DDV
— REW
New qualifiers
Sec.4
The following qualifiers are new:
— Cyber secure(Essential)
— Cyber secure(Advanced)
— Cyber secure(+)
Changes July 2020, entering into force 1 January 2021
Topic
New class notations
Reference
Sec.4
Description
The following notations are new:
— HDS
— OILREC FP>60°C
— FCS
— DAT-B
New qualifiers
Sec.3, Sec.4
The following qualifiers are new:
— BMON(+)
— Pontoon(B)
— COAT-PSPC(CA)
— DAV(Icebreaker)
Removed class notation
Sec.4
The following class notation has been removed:
— HLP
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 71
Part 1 Chapter 2 Changes – historic
July 2019 edition
Changes July 2019, entering into force 1 January 2020
Topic
New class notations
Reference
Sec.3 and Sec.4
Description
The following notations are new:
— FSU for liquefied gas
— FSU for C
— Walk2workready
— NAABSA
— SRTP
— REGAS ready
— Gas fuelled LPG
— ITC
— WAPS
— Platform supply
— Polar
— DAV
— Quiet
— ASP
— ASP ready
New qualifiers
The following qualifiers are new
— RSD(NAS, X)
— VCS(L, X)
— NAUT(INS+)
— Winterized(BST)
Deleted class notation
Sec.4
The following class notation is deleted:
— CHEM
Deleted qualifiers
Sec.3 and Sec.4
The following qualifiers are deleted:
— Offshore service vessel(Supply)
— Winterized(Basic, Cold, Polar)
— NAUT(ICS)
July 2018 edition
Changes July 2018, entering into force 1 January 2019
Topic
Reference
Description
Update of name and qualifiers
of a ship type notation for
vessels for special operations
Sec.3 [11]
Diving support vessel class notation is changed to DSV. New
qualifiers Ready and OCS are introduced.
Cyber security
Sec.4 [6]
Introducing new additional class notation Cyber secure related
to mitigation of cyber risks.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 72
Reference
Description
New class notation for SOx
and NOx cleaning systems
(Scrubbers and selective
catalytic reduction systems
(SCR))
Sec.4 [8]
New additional class notation ER (emission reduction) related
to environmental protection and pollution control.
Survey requirements for
fleet in service (FiS) for class
notation Walk2work
Sec.4 [4]
Added reference to requirements for fleet in service.
Maintenance of rules for ore
carriers
Sec.4 Table 1
The additional class notation Holds n may be empty is
removed for ships with the additional class notation OC(M) .
Underwater inspection in lieu
of dry docking
Sec.4 Table 10
New additional class notation UWILD for permanently moored
vessels is introduced.
Revision of requirements for
notation REGAS
Sec.4 Table 5
New qualifier ES (enhanced safety) for the REGAS class
notation is introduced, focusing on enhanced safety features.
Revision of individual route
calculation
Sec.4 Table 5
Updated and enhanced additional class notation RSCS+ for
route specific container stowage on long haul as well as costal
voyages based on weather forecasts. The sign + is added to
differentiate the enhanced notation.
January 2018 edition
Changes January 2018, entering into force 1 July 2018
Topic
Implementation of new
descriptive notation
Reference
Description
Sec.1 [1.1.1]
Descriptive notation added to list of content of class notation
string.
Sec.6 [1.1] to Sec.6
[1.4]
New requirements offering the option of assigning a descriptive
notation to a vessel.
New ship type notation Tanker for potable water
Sec.3 Table 10
For vessels intended to carry potable water in bulk.
New additional class notation RO/RO
Sec.4 Table 6
Designed and arranged for roll-on and roll-of cargo handling
and transportation of rolling vehicles.
New additional class notation Gas power plant
Sec.4 Table 6
For vessels arranged with a gas fired power plant for the
production and export of electrical energy.
New additional class notation ADW
Sec.4 Table 6
For anchoring in deep and unsheltered water.
New additional class notation BCLIQ
Sec.4 Table 6
For vessel intended to carry solid bulk cargo that may liquefy
during a voyage if shipped at a moisture level exceeding the
transportable moisture limit of the cargo.
New additional class notation RO/RO
Sec.4 Table 6
Designed and arranged for roll-on and roll-of cargo handling
and transportation of rolling vehicles.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 73
Part 1 Chapter 2 Changes – historic
Topic
Reference
New additional class notation Shaft align
Description
Sec.4 Table 3
For enhanced design, installation and operating margins of the
propulsion shaft bearings beyond the main class requirements
for shaft alignment.
July 2017 edition
Changes July 2017, entering into force 1 January 2018
Topic
Reference
Description
Notations for Service area
restrictions (R notations)
and corresponding limiting
significant wave height, Hs
Sec.5 Table 1
Inserted column with corresponding limiting significant wave
height Hs for each R notation.
Sec.5 Table 1
Inserted footnote related to operational assumptions.
Clarification of requirements for
ship type and additional class
notations
Sec.2 [2.1.1]
Inserted text clarifying that requirements for ship type
and additional class notations may superseed main class
requirements.
Correct reference
Sec.3 Table 10
Inserted correct reference to Fleet in Service requirements.
Update Table 10 according to
Pt.5 Ch.10 Sec.11
Sec.3 Table 10
Inserted class notation Escort tug with new qualifiers.
Update Table 10 according to
Pt.6 Ch.9 Sec.4
Sec.4 Table 10
Inserted four new qualifiers according to the introduction in the
rules.
Update Table 10 according to
Pt.6 Ch.9 Sec.7
Sec.4 Table 10
Inserted new class notation CMON.
January 2017 edition
Main changes January 2017, entering into force 1 July 2017
• Sec.3 - Ship type notations
—
—
—
—
Sec.3
Sec.3
Sec.3
Sec.3
Table
Table
Table
Table
5:
5:
6:
6:
added
added
added
added
class notation Barge for oil products with flashpoint above 60°C
class notation Barge for asphalt/bitumen
application for class notation Tanker for chemicals with flashpoint above 60°C
class notation Barge for chemicals with flashpoint above 60°C
• Sec.4 - Additional class notations
— Sec.4 Table 6: added class notation Walk2work
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 74
Part 1 Chapter 2 Changes – historic
Topic
Part 1 Chapter 2 Changes – historic
July 2016 edition
Main changes July 2016, entering into force 1 January 2017
• Sec.3 Ship type notations
—
—
—
—
—
—
—
—
—
—
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
Table
Table
Table
Table
Table
Table
Table
Table
Table
Table
5: Added class notation Barge for oil.
5: Added class notation Barge for oil products.
6: Added class notation Barge for chemicals.
6: Added class notation Barge for C.
7: Added class notation Tanker for c.
7: Added class notation Barge for liquefied gas.
7: Added class notation Barge for c.
10: Added class notation Slop Reception Vessel.
10: Added class notation Reefer.
10: Added class notation Refrigerated fruit juice carrier.
• Sec.4 Additional class notations
— Sec.4 Table 5: Class notation REGAS changed from optional to mandatory.
— Sec.4 Table 5: Additional class notation CA.
January 2016 edition
Main changes January 2016, entering into force 1 July 2016
• Sec.3 Ship type notations
— Table 5: Added class notations:
— Tanker for oil products with flashpoint above 60°C
— Tanker for asphalt/bitumen.
— Table 6: Added class notation Tanker for chemicals with flashpoint above 60°C.
• Sec.4 Additional class notations
— Table 1: Added class notations:
— Hot
— Block loading.
— Table 3: Added class notation Scrubber ready
— Table 6: Added class notation CHEM
— Table 10: Added qualifiers for class notation TMON:
— Closed loop water
— Open loop water.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 75
Part 1 Chapter 2 Changes – historic
October 2015 edition
This is a new document.
The rules enter into force 1 January 2016.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.2. Edition July 2021
Class notations
DNV AS
Page 76
About DNV
DNV is the independent expert in risk management and assurance, operating in more than 100
countries. Through its broad experience and deep expertise DNV advances safety and sustainable
performance, sets industry benchmarks, and inspires and invents solutions.
Whether assessing a new ship design, optimizing the performance of a wind farm, analyzing sensor
data from a gas pipeline or certifying a food company’s supply chain, DNV enables its customers and
their stakeholders to make critical decisions with confidence.
Driven by its purpose, to safeguard life, property, and the environment, DNV helps tackle the
challenges and global transformations facing its customers and the world today and is a trusted
voice for many of the world’s most successful and forward-thinking companies.
WHEN TRUST MATTERS
RULES FOR CLASSIFICATION
Ships
Edition July 2021
Part 1 General regulations
Chapter 3 Documentation and certification
requirements, general
The content of this service document is the subject of intellectual property rights reserved by DNV AS (“DNV”). The user
accepts that it is prohibited by anyone else but DNV and/or its licensees to offer and/or perform classification, certification
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The PDF electronic version of this document available at the DNV website dnv.com is the official version. If there
are any inconsistencies between the PDF version and any other available version, the PDF version shall prevail.
DNV AS
FOREWORD
DNV rules for classification contain procedural and technical requirements related to obtaining and
retaining a class certificate. The rules represent all requirements adopted by the Society as basis
for classification.
©
DNV AS July 2021
Any comments may be sent by e-mail to rules@dnv.com
This service document has been prepared based on available knowledge, technology and/or information at the time of issuance of this
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(including negligence), shall be limited to direct losses and under any circumstance be limited to 300,000 USD.
This document supersedes the July 2019 edition of DNVGL-RU-SHIP Pt.1 Ch.3.
The numbering and/or title of items containing changes is highlighted in red.
Changes July 2021, entering into force 1 January 2022
Topic
Rebranding to DNV
Reference
All
Description
This document has been revised due to the rebranding of DNV
GL to DNV. The following have been updated: the company
name, material and certificate designations, and references to
other documents in the DNV portfolio. Some of the documents
referred to may not yet have been rebranded. If so, please see
the relevant DNV GL document. No technical content has been
changed.
Editorial corrections
In addition to the above stated changes, editorial corrections may have been made.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.3. Edition July 2021
Documentation and certification requirements, general
DNV AS
Page 3
Part 1 Chapter 3 Changes - current
CHANGES – CURRENT
Changes – current.................................................................................................. 3
Section 1 General.................................................................................................... 5
1 General................................................................................................ 5
Changes – historic.................................................................................................. 6
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.3. Edition July 2021
Documentation and certification requirements, general
DNV AS
Page 4
Part 1 Chapter 3 Contents
CONTENTS
Part 1 Chapter 3 Section 1
SECTION 1 GENERAL
1 General
For documentation and certification requirements, general, DNV-CG-0550 shall be applied.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.3. Edition July 2021
Documentation and certification requirements, general
DNV AS
Page 5
July 2019 edition
Changes July 2019, entering into force 1 January 2020
This document has been replaced by DNVGL-CG-0550.
July 2018 edition
Changes July 2018, entering into force 1 January 2019
Topic
Reference
Description of change
Additional definition of
concepts
Additional revised description
related to handling of
documentation
Sec.1
Definitions of the concepts related to targets, activity methods,
standards, lifecycle phases and authorization.
Sec.2
The process for handling of documentation has been further
specified.
Revise definition of
documentation types
Sec.3 [2]
Revised documentation types for non-destructive testing and
new documentation types for construction monitoring and for
permanent magnet machines.
Revise definitions of
certification requirements
Sec.4
Introducing new sub-sections: Certificate hierarchy.
Revise compliance document
types for components
Sec.5
New compliance document: Type approval design certificate
(TADC). New product test report (PTR) and material test report
(MTR) replacing previous test report (TR).
January 2018 edition
Changes January 2018, entering into force 1 July 2018.
Topic
NDT procedures to be
approved
Reference
Sec.3 [2]
Description
The documentation type H135 - Non-destructive testing (NDT)
procedure has been added.
January 2017 edition
Amendments July 2017
• General
— Sec.3 [2]: Editorial changes to the documentation types - G040, I080, I140, T060, Z261, Z262, Z263,
Z264, Z266 and new documentation type S170 - Ship energy efficiency management plan (SEEMP), is
introduced.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.3. Edition July 2021
Documentation and certification requirements, general
DNV AS
Page 6
Part 1 Chapter 3 Changes – historic
CHANGES – HISTORIC
Part 1 Chapter 3 Changes – historic
Main changes January 2017, entering into force 1 July 2017
• Sec.2 Documentation Requirements, General
— Sec.2 [2.1.1]: included documentation requirements given by ship type notations.
July 2016 edition
This document supersedes the October 2015 edition.
Main changes July 2016, entering into force 1 January 2017
• Sec.3 Documentation types
—
—
—
—
—
—
—
—
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
Sec.3
[2]:
[2]:
[2]:
[2]:
[2]:
[2]:
[2]:
[2]:
Discipline
Discipline
Discipline
Discipline
Discipline
Discipline
Discipline
Discipline
E - E080: added list of content for document.
G - G130: added specification for diagram.
P - P030: added specification for calculations.
S - S015: added specification for diagram.
Z - Z220: corrections in heading.
Z - Z221: corrections in heading.
Z - Z222: corrections in heading.
Z - Z223: added PWOM.
October 2015 edition
This is a new document.
The rules enter into force 1 January 2016.
Amendments January 2016
• General
— Only editorial corrections have been made.
Rules for classification: Ships — DNV-RU-SHIP Pt.1 Ch.3. Edition July 2021
Documentation and certification requirements, general
DNV AS
Page 7
About DNV
DNV is the independent expert in risk management and assurance, operating in more than 100
countries. Through its broad experience and deep expertise DNV advances safety and sustainable
performance, sets industry benchmarks, and inspires and invents solutions.
Whether assessing a new ship design, optimizing the performance of a wind farm, analyzing sensor
data from a gas pipeline or certifying a food company’s supply chain, DNV enables its customers and
their stakeholders to make critical decisions with confidence.
Driven by its purpose, to safeguard life, property, and the environment, DNV helps tackle the
challenges and global transformations facing its customers and the world today and is a trusted
voice for many of the world’s most successful and forward-thinking companies.
WHEN TRUST MATTERS