Unit of competency Outline

Date retreived
23/07/2026 12:28 AM AWST

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Manage stability of a vessel 500 gross tonnage or more

Manage stability of a vessel 500 gross tonnage or more

Unit of competency
National Code
MARA009
State Code
AVD94
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
1.00
Current Release Date
07/09/2015
View on TGA
State Implementation and Classification
Approved Date
10/12/2015
Field of Education
031705 - Marine Craft Operation
Original Release Date
10/12/2015
Nominal Hours
120
Description
This unit involves the skills and knowledge required to control trim, stability and stress within safe limits at all times on a vessel 500 gross tonnage or more.This unit applies to people working in the maritime industry as a Master Unlimited.No licensing, legislative or certification requirements apply to this unit at the time of publication.
Notes
Elements and Performance Criteria
1 Manage vessel trim under normal operating conditions
  • 1.1 Stability analysis and weight distribution planning are conducted at a time frequency and scope appropriate to the proposed nature of the voyage and vessel operation
  • 1.2 Weight distribution is arranged to maintain vessel within acceptable stability limits for the anticipated operational situations likely to be experienced during the voyage
  • 1.3 Calculations are made to determine the draught and centre of gravity of vessel after adding, removing or shifting weight
  • 1.4 Factors affecting the stability and trim of vessel are identified and allowances are made in calculations
  • 1.5 Trim, draughts and list of vessel are controlled as required to ensure they are suitable to progress all anticipated vessel operations
2 Control vessel stability when compartment is flooded
  • 2.1 Damage to vessel and nature of floodingof compartments is assessed
  • 2.2 Effect upon vessel stability of flooded and flooding compartments is evaluated
  • 2.3 Suitable strategyfor maintaining or restoring trim and stability is devised
  • 2.4 Where stress limits of the vessel are exceeded as a consequence of damage and/or flooding, appropriate action is initiated to ensure safety of personnel, including abandoning the vessel as required
3 Manage stress conditions of the vessel
  • 3.1 Stress levels of the vessel are assessed according to manufacturer specifications
  • 3.2 Stability of the vessel is monitored at a frequency and scope relevant to vessel operations, sufficient to enable stress and stability to be maintained within acceptable limits at all times
  • 3.3 Appropriate action is taken where weight distribution has or could exceed acceptable safety limits
4 Maintain records of stability management
  • 4.1 Data and information related to stability management is accurately recorded
  • 4.2 Data and information related to stability management is filed and stored according to organisational procedures
No information
No information
Replaces
State Code National Code Title Type
S5336 TDMMA1007B CONTROL TRIM, STABILITY AND STRESS Unit of competency
WG357 MARA6001A Manage stability of a vessel 500 gross tonnage or more Unit of competency
Replaced By
State Code National Code Title Type
OCH76 MARA023 Manage trim, stability and stress of a vessel Unit of competency
State Code National Code Title Type
AWN9 MAR60315 Advanced Diploma of Maritime Operations (Master Unlimited) Qualification