23047 version 1
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Demonstrate knowledge of clear marine finishes and application
Level
3
Credits
4
Purpose
People credited with this unit standard are able to: identify and describe
marine clear finish types; explain varnish preparation considerations;
describe application and use of varnish and oils; and identify varnish
maintenance requirements.
Subfield
Boating Industries
Domain
Boatbuilding
Status
Registered
Status date
14 December 2007
Date version published
14 December 2007
Planned review date
31 December 2012
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Boating Industry Training Organisation
Accreditation and Moderation Action Plan (AMAP) reference
0136
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
a All work practices must meet recognised codes of practice and documented
worksite health and safety procedures (where these exceed code) for personal,
product, and worksite health and safety, and must meet the obligations required
under the Health and Safety in Employment Act 1992, and subsequent and
delegated legislation.
b All work practices must meet recognised codes of practice and documented
worksite environmental procedures (where these exceed code) for personal,
product, and worksite environmental matters, and must meet the obligations
required under the Resource Management Act 1991, and subsequent and
delegated legislation.
c All work practices must meet documented worksite quality management
requirements. These include documentation of activities, events, and decisions.
 New Zealand Qualifications Authority 2016
23047 version 1
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2
This unit standard is recommended for entry to assessment against Unit 11792,
Apply clear marine surface coats.
3
Marine varnish formulations and application techniques differ from domestic and
industrial applications. This unit standard is specific to the marine environment.
Marine specific factors to be considered include: severe exposure to sunlight
requiring more robust coating systems; constant presence of salt water in sea
conditions leading to retention of moisture on the surface of clear finishes; higher
traffic and wear on surfaces because of the confined spaces in boats; common
requirement for very finely finished components; difficult application environments;
clear finished timbers are commonly of highest available grade, must be durable
because of the marine environment, and often contain oil or are very dense. These
factors require unique application techniques to meet practical, aesthetic and
technical standards.
4
Definition
Work practice refers to good trade practice involving recognised techniques and
processes. Work practice may vary between workplaces.
Elements and performance criteria
Element 1
Identify and describe marine clear finish types.
Performance criteria
1.1
Marine varnishes are identified and appropriate use is described in accordance
with composition.
Range
varnishes include but not limited to – single pack polyurethane, 2
pack polyurethane, tung oil additive, oils.
1.2
Marine stains are identified and appropriate use is described in accordance with
visual effect.
1.3
Marine varnishes as identified in performance criterion 1.1 are described in
terms of performance, advantages and disadvantages, and deterioration.
1.4
Marine varnish gloss levels are described in accordance with usage and
performance.
Element 2
Explain marine varnish preparation considerations.
Performance criteria
2.1
Timber seasoning requirements are explained in terms of varnish performance.
2.2
Preparation differences between timbers are explained in terms of presence of
natural oils and degreasing.
 New Zealand Qualifications Authority 2016
23047 version 1
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2.3
Sanding methods and alternatives are explained in terms of surface cutting,
surface hardness, and film build.
2.4
Cleaning and drying techniques are identified and explained in accordance with
work practice.
2.5
Varnish application schedule is developed in accordance with product
specification and substrate type.
Range
2.6
includes but not limited to – number of coats, thinning, overcoating times, preliminary sealing.
Storage requirements are explained for varnish, oils and stains in terms of
safety and shelf life.
Element 3
Describe application and use of marine varnish and oils.
Performance criteria
3.1
Application methods for varnish and oils are described in terms of advantages
and disadvantages.
Range
3.2
spraying, brushing, rubbing.
Conditioning of varnish and equipment is described in accordance with work
practice.
Range
may include but not limited to – brushes, stirring, mixing,
decanting, housekeeping.
Element 4
Identify marine varnish maintenance requirements.
Performance criteria
4.1
Varnish deterioration factors are identified in terms of service environment.
Range
may include but not limited to – sun, salt, abrasion.
4.2
Effects of film build in terms of maintenance are identified.
4.3
Typical varnish and oil re-coat times are described in terms of service
environments and condition of existing applied coating.
4.4
Typical defects in varnish systems and remedies are identified in accordance
with work practice.
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23047 version 1
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Please note
Providers must be accredited by NZQA, or an inter-institutional body with delegated
authority for quality assurance, before they can report credits from assessment against
unit standards or deliver courses of study leading to that assessment.
Industry Training Organisations must be accredited by NZQA before they can register
credits from assessment against unit standards.
Accredited providers and Industry Training Organisations assessing against unit standards
must engage with the moderation system that applies to those standards.
Accreditation requirements and an outline of the moderation system that applies to this
standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The
AMAP also includes useful information about special requirements for organisations
wishing to develop education and training programmes, such as minimum qualifications for
tutors and assessors, and special resource requirements.
Comments on this unit standard
Please contact the Boating Industry Training Organisation training@bia.org.nz if you wish
to suggest changes to the content of this unit standard.
 New Zealand Qualifications Authority 2016