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Elements and Performance Criteria

1. Identify major parts of a hull relevant to commercial vessel inspections and surveys
   • Appropriate nomenclature is used to identify major parts of hull to be inspected as part of commercial vessel marine survey
   • Structure of vessel hull in plan-view, profile, cross-section and perspective are accurately analysed across a range of different plans and drawings of vessels to determine survey requirements
   • Use of plans and drawings in the survey are identified and applied during survey plan development
2. Identify commercial vessel types and their structure
   • Basic factors determining design of commercial vessels are outlined
   • Features of vessel designed to ensure its watertight and weather tight integrity are identified and maintained
   • Survey or inspection plan relating to vessel design is identified and implemented
   • Vessel construction methods and materials are identified and used as the basis to determine inspection and survey tasks
3. Interpret basic vessel stability criteria
   • Basic stability theory as outlined in the National Standard for Commercial Vessels (NSCV) in relation to construction of a commercial vessel is accurately defined and basic stability calculations are performed
   • Purpose of a vessel stability assessment is correctly explained
   • Documentation and records required by surveyor to assess stability of vessel are identified and confirmed according to the NSCV
4. Apply vessel construction theory to survey
   • Different types of vessel materials are identified to determine scope of survey
   • Survey plan appropriate to type of vessel is developed according to survey requirements and discussed with surveyor
   • Feedback on survey plan is sought from others and possible changes or improvements are clarified where required and incorporated

Range Statement

Range is restricted to essential operating conditions and any other variables essential to the work environment.
Appropriate nomenclature must include:	all of the terms in the NSCV and referenced standards
Commercial vessels must include:	any vessel currently defined as a commercial vessel in Marine Safety (Domestic Commercial Vessel) National Law
Plans and drawings include one or more of the following:	any plan as referred to in the NSCV bilge diagram cargo arrangement/tank plan docking plans fire and evacuation general arrangement plan lines plan sections and views shell expansion plan system operating procedures
Basic factors must include:	Australian and New Zealand Standards class rules NSCV Uniform Shipping Laws (USL) Code
Basic factors include one or more of the following:	framing requirements plating scantlings
Basic stability theory includes one or more of the following:	differences between transverse and longitudinal stability and causes of list and trim effects of density of sea water on draught and freeboard of a small vessel impact of design and hull shape on stability relationship between light displacement, loaded displacement and deadweight tonnage relationship between weight and buoyancy in relation to floating bodies reserve buoyancy equilibrium stability terms and definitions any other terms referred to in standard works on small ship naval architecture
Types of vessel materials include one or more of the following:	ferrocement laminated materials and fabrics laminated timber moulded fibre composites riveting welded and riveted welded metal wood any other methods relevant to local commercial vessel market referred to in standard works on small craft construction

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Performance Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions on at least one occasion and include:

applying relevant work health and safety/occupational health and safety (WHS/OHS) requirements and work practices calculating vessel stability accurately, using basic stability criteria calculations developing and maintaining effective planning documents estimating, measuring and calculating time required to complete tasks interpreting, applying and conveying information verbally, in writing and diagrammatically interpreting numerical data reading and interpreting vessel specifications and drawings recording and reporting workplace information.

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Knowledge Evidence

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements, performance criteria and range of conditions and include knowledge of:

basic stability theory, and use and purpose of a vessel stability book commercial vessel types and their structure nomenclature relevant to vessel construction other guidance such as: Marine Orders Marine Safety (Domestic Commercial Vessel) National Law National Standard for Commercial Vessels (NSCV) principal design features of small vessels related to stability and watertight integrity process of constructing commercial vessels WHS/OHS requirements and safe work practices.

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