23866 version 1
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Locate existing survey marks, for hydrographic surveys, and assess
their reliability
Level
4
Credits
5
Purpose
This unit standard is for people working in the hydrography sector of the
surveying profession.
People credited with this unit standard are, in a hydrographic context, able to:
interpret existing documents to locate survey marks, access and locate
existing survey marks; and explain and assess the reliability of existing
survey.
Subfield
Surveying
Domain
Hydrography
Status
Registered
Status date
25 February 2008
Date version published
25 February 2008
Planned review date
31 December 2012
Entry information
Open.
Accreditation
Evaluation of documentation and visit by NZQA and
industry.
Standard setting body (SSB)
Infrastructure ITO
Accreditation and Moderation Action Plan (AMAP) reference
0101
This AMAP can be accessed at http://www.nzqa.govt.nz/framework/search/index.do.
Special notes
1
The following documentation must be complied with:
TH Standard 31 Standards for Hydrographic Surveys (HYSPEC) v3 (Wellington:
National Topographic/Hydrographic Authority, 2001), available at
http://www.linz.govt.nz;
Specifications for Geodetic Hydrographic Control Points v1.1 (Wellington: Land
Information New Zealand (LINZ), 2006), available at http://www.linz.govt.nz;
 New Zealand Qualifications Authority 2016
23866 version 1
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Guidelines of Good Practice for Hydrographic Surveys in New Zealand Ports and
Harbours (Wellington: Maritime Safety Authority of New Zealand, 2004), available at
http://www.msa.govt.nz;
geodetic and cadastral Information available at http://www.linz.govt.nz;
territorial authority records;
workplace records;
cadastral survey and topographic plans;
job specifications.
2
Evidence is required of confirming the reliability of existing survey marks for at least
two hydrographic surveys.
3
Definitions
Site information records refer to survey and title records held by organisations such
as LINZ and territorial local authorities.
Site records refer to records rendered by an on-site survey.
Workplace procedures refer to documented procedures specific to an enterprise
which set out the quality management requirements for the business practice and
activities of that enterprise.
Elements and performance criteria
Element 1
Interpret existing documents to locate survey marks in a hydrographic context.
Range
existing documents – survey plans, titles, LINZ databases, topographical
information, territorial authority records, cadastral data set, workplace records.
Performance criteria
1.1
Existing documents are interpreted for possible origin in accordance with job
specifications.
1.2
Interpretation of existing documents determines the presence of physical
features that will impact on the job.
1.3
Data from existing documents is interpreted for connection to the survey
framework in accordance with job specifications.
 New Zealand Qualifications Authority 2016
23866 version 1
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Element 2
Access and locate existing survey marks in a hydrographic context.
Range
existing survey marks – permanent reference mark, bench mark, witness mark,
control station;
evidence is required for one of each type of survey mark.
Performance criteria
2.1
Access to the marks is gained in accordance with workplace procedures and
legislation.
2.2
Physical occupation is confirmed as matching site information records, and any
discrepancies are recorded on site records, in accordance with job
specifications and workplace procedures.
2.3
Existing survey marks are located in accordance with survey data.
Range
2.4
survey data – origin, physical features, connection.
Existing survey marks are identified in accordance with site information records
and site records.
Element 3
Explain and assess the reliability of existing survey marks in a hydrographic context.
Range
survey marks – permanent reference mark, bench mark, witness mark, control
station;
evidence is required for one of each.
Performance criteria
3.1
Factors affecting the reliability of existing survey marks are explained in
accordance with HYSPEC.
3.2
The reliability of existing survey marks is assessed by re-observing and
recalculating previous relationships and confirming in accordance with job
specifications and HYSPEC.
 New Zealand Qualifications Authority 2016
23866 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 Infrastructure ITO askus@infratrain.co.nz if you wish to suggest changes to
the content of this unit standard.
 New Zealand Qualifications Authority 2016