11138 version 5
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Determine survey vessel position
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 able to demonstrate knowledge of
positional fixing systems for hydrographic surveying, and fix vessel position
during survey operations.
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 legislation and documentation must be complied with:
Health and Safety in Employment Act 1992;
TH Standard 31 Standards for Hydrographic Surveys (HYSPEC) v3 (Wellington:
National Topographic/Hydrographic Authority, 2001), available at
http://www.linz.govt.nz;
IHO Standards for Hydrographic Surveys, Special Publication No 44 (Monaco:
International Hydrographic Organisation, 1998) (IHO standards), available at
http://www.iho.shom.fr;
job specifications;
equipment manufacturer’s instructions;
system manufacturer’s instructions.
 New Zealand Qualifications Authority 2016
11138 version 5
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2
Definitions
GNSS stands for global navigational satellite system, and refers to satellite based
positioning systems such as GPS, GLONASS, and Galileo;
Galileo refers to a European operated GNSS;
GLONASS refers to a Soviet space-based navigation system;
GPS refers to the United States NAVSTAR GPS or Navigation Signal Timing and
Ranging Global Positioning System.
Elements and performance criteria
Element 1
Demonstrate knowledge of positional fixing systems for hydrographic surveying.
Range
two of – range/range systems, range/bearing systems, hyperbolic systems,
GNSS systems.
Performance criteria
1.1
The position fixing process is explained in accordance with equipment
manufacturer's instructions.
1.2
The characteristics of each system are identified in terms of range, accuracy,
repeatability, calibration, and limitations.
1.3
The vessel positioning system is calibrated in accordance with HYSPEC and
job specifications.
Element 2
Fix vessel position during survey operations.
Range
two of – range/range systems, range/bearing systems, hyperbolic systems,
GNSS systems.
Performance criteria
2.1
The vessel positioning system is calibrated in accordance with HYSPEC and
job specifications.
2.2
The vessel positioning system is operated in accordance with system
manufacturer's instructions and HYSPEC.
2.3
Positional accuracy is established in accordance with HYSPEC and job
specifications.
2.4
The quality of the position fix is determined by statistical analysis in accordance
with job specifications.
 New Zealand Qualifications Authority 2016
11138 version 5
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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