Elements and Performance Criteria

The range statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance. Bold italicised wording, if used in the performance criteria, is detailed below.
Calculations must include:
Calculating required load distribution to achieve desired trim
Calculations for change of draught, trim and heel when entering different water densities and to bilging of compartments
Centre of gravity of a vessel using an inclining experiment and effect of suspended weights
Changes to draught, trim and heel due to adding or removing fuel, ballast or cargo
Determining required correction for height of centre of gravity (kg) for free surface effect
Determining values of righting lever and construction of righting lever curves
Displacement, wetted surface, form coefficients, tonne per centimetre immersion, application of Simpson’s rules to first and second moments of area, centroids and centres of pressure
Effect on stability of dry docking and grounding
Hydrostatic stability of a vessel
Moment of statical stability at small angles of heel
Transverse and longitudinal stability using hydrostatic data
Vessel centre of gravity, centre of buoyancy and metacentre
Factors may include:
Dry docking
Excessive trim
Free surface of a liquid
Grounding
Handling of heavy weights
Large swell conditions
Shift of cargo
Wind heel
Damage to vessel may include:
Damage caused by incorrectly lashed or secured cargo
Damage caused by incorrectly stowed cargo
Damage to cargo handling equipment by exceeding safe working limits
Nature of flooding may include:
Flooding due to collision or grounding
Ingress of sea water through hatch covers
Suitable strategy may include:
Addition of ballast
Temporary damage repairs
Data and information may include:
Cargo handling equipment
Instructions of relevant maritime authorities
Manufacturer instructions and procedures
Organisational cargo handling procedures
Relevant Australian and international standards and regulatory requirements
Relevant WHS/OHS legislation
Vessel and shore safety checklists
Vessel Cargo Securing Manual
Vessel log
Vessel Register of Materials Handling Equipment

The evidence guide provides advice on assessment and must be read in conjunction with the performance criteria, the required skills and knowledge, the range statement and the Assessment Guidelines for the Training Package.
Critical aspects for assessment and evidence required to demonstrate competency in this unit
The evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the Elements, Performance Criteria, Required Skills, Required Knowledge and include:
attention to appropriate level of detail in recordkeeping
producing accurate and reliable documentation.
Context of and specific resources for assessment
Performance is demonstrated consistently over time and in a suitable range of contexts.
Resources for assessment include access to:
industry-approved marine operations site or simulation where managing stability of a vessel of 500 gross tonnage or more may be demonstrated
tools, equipment and personal protective equipment currently used in industry
relevant regulatory and equipment documentation that impacts on work activities
range of relevant exercises, case studies and/or other simulated practical and knowledge assessments
appropriate range of relevant operational situations in the workplace.
In both real and simulated environments, access is required to:
relevant and appropriate materials and equipment
applicable documentation including workplace procedures, regulations, codes of practice and operation manuals.
Method of assessment
Practical assessment must occur in an:
appropriately simulated workplace environment and/or
appropriate range of situations in the workplace.
A range of assessment methods should be used to assess practical skills and knowledge. The following examples are appropriate to this unit:
direct observation of the candidate managing stability of a vessel of 500 gross tonnage or more
direct observation of the candidate applying relevant WHS/OHS requirements and work practices.
Guidance information for assessment
Holistic assessment with other units relevant to the industry sector, workplace and job role is recommended.
In all cases where practical assessment is used it should be combined with targeted questioning to assess Required Knowledge.
Assessment processes and techniques must be appropriate to the language and literacy requirements of the work being performed and the capacity of the candidate.