Unit of competency Outline
Date retreived
22/07/2026 3:25 PM AWST
22/07/2026 3:25 PM AWST
Whilst all efforts are made to provide accurate and timely information from the relevant source/documentation, please be aware that the information supplied may not be the most current version. The accuracy of the detail has not been confirmed by the Department and therefore should not be relied upon without first confirming the contents.
Manage vessel stability
Manage vessel stability
Unit of competency
National Code
MARA4002A
MARA4002A
State Code
WG354
WG354
TGA Status
Replaced
Replaced
DTWD Status
Replaced
Replaced
State Implementation and Classification
Approved Date
20/12/2013
Field of Education
031705 - Marine Craft Operation
Original Release Date
20/12/2013
Nominal Hours
20
Description
This unit involves the skills and knowledge required to manage the dynamic factors affecting the stability of a vessel up to 80 metres.
Notes
Elements and Performance Criteria
1 Calculate stability
- 1.1 Vessel stability data book is made available and checked for endorsement
- 1.2 Data is interpreted to determine safety parameters for vessel
- 1.3 Stability is accurately calculated using data extracted from vessel stability data book
- 1.4 Stability calculations are checked to ensure they correlate with data set out in vessel stability book
- 1.5 Miscalculations or unsafe conditions are recognised and recalculated or checked
- 1.6 Calculated stability data is recorded using appropriate units and correct number of significant figures
2 Control vessel stress and stability
- 2.1 Information from vessel stability information is used to determine loading limits and displacement from draft
- 2.2 Vessel weight distribution is managed to maintain stability condition within safe limits at all times and regulatory requirements are complied with under all conditions of loading
- 2.3 Relevant stability information is correctly communicated to others as required
- 2.4 Stability conditions of vessel are managed in adverse weather conditions
- 2.5 Emergencies that may jeopardise vessel stability are recognised and appropriate action is taken
3 Maintain records of stability management
- 3.1 Data and information related to stability management is accurately recorded
- 3.2 Data and information related to stability management is filed and stored according to organisational procedures
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.
Stability calculations must include:
Correlation against stability book data
Draft
Final KG
Trim
Loading limits may include:
Not exceeding allowable passenger carrying capacity and distribution
Not exceeding vessel designed cargo carrying capacity
Understanding the effect of fuel, fresh water and ballast on cargo capacity
Emergencies may include:
Cargo shift
Damaged hull
Flooding of cargo spaces
Stability calculations must include:
Correlation against stability book data
Draft
Final KG
Trim
Loading limits may include:
Not exceeding allowable passenger carrying capacity and distribution
Not exceeding vessel designed cargo carrying capacity
Understanding the effect of fuel, fresh water and ballast on cargo capacity
Emergencies may include:
Cargo shift
Damaged hull
Flooding of cargo spaces
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 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 up to 80 metres 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 vessel up to 80 metres
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.
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 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 up to 80 metres 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 vessel up to 80 metres
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.
Replaces
| State Code | National Code | Title | Type |
|---|---|---|---|
| S5339 | TDMMA1207B | MANAGE STRESS AND DYNAMIC FACTORS AFFECTING A SMALL VESSEL'S STABILITY | Unit of competency |
Replaced By
| State Code | National Code | Title | Type |
|---|---|---|---|
| WH791 | MARA004 | Manage vessel stability | Unit of competency |