26090 Demonstrate Knowledge of Trim and Stability Variation on Vessels

26090 version 1 Page 1 of 3 Demonstrate knowledge of trim and stability variation on vessels

Level 4

Credits 5

Purpose People credited with this unit standard are able to demonstrate knowledge of trim and stability variation on vessels.

Subfield Boating Industries

Domain Boatbuilding

Status Registered

Status date 21 May 2010

Date version published 21 May 2010

Planned review date 31 December 2014

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

Elements and performance criteria

 New Zealand Qualifications Authority 2018 26090 version 1 Page 2 of 3

Element 1

Demonstrate knowledge of trim and stability variation on vessels.

Performance criteria

1.1 Static stability and trim are explained in fore and aft terms.

Range includes but is not limited to – moments to trim, position of longitudinal centre of gravity, position of longitudinal centre of buoyancy, variation of the position of the centre of gravity, potential effects of as built variations from design.

1.2 Static stability and trim are explained in transverse terms.

Range includes but is not limited to – righting moment, down flooding angle, GZ curve, initial stability, ultimate stability, variation of the position of the centre of gravity, potential effects of as built variations from design.

1.3 Weight per mm immersion is calculated for a vessel. The use of the calculation is explained in terms of determining the effect extra weight will have on where a boat floats.

Range calculation is based on waterplane area.

1.4 Stability is explained in terms of free water effect.

1.5 Stability effects of loading are explained in fore and aft, transverse, and vertical terms.

1.6 Potential implications of shifting passenger and freight movements are explained for three given scenarios.

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.

 New Zealand Qualifications Authority 2018 26090 version 1 Page 3 of 3

Comments on this unit standard

Please contact the Boating Industry Training Organisation [email protected] if you wish to suggest changes to the content of this unit standard.

 New Zealand Qualifications Authority 2018