Unit of competency Outline

Date retreived
23/07/2026 3:39 AM AWST

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Maintain vessel stability

Maintain vessel stability

Unit of competency
National Code
MARA005
State Code
WH792
TGA Status
Replaced
DTWD Status
Replaced
Current Release Number
2.00
Current Release Date
03/12/2013
View on TGA
State Implementation and Classification
Approved Date
04/02/2014
Field of Education
031705 - Marine Craft Operation
Original Release Date
04/02/2014
Nominal Hours
60
Description
This unit involves the skills and knowledge required to determine the stability and trim of a vessel to ensure that stability conditions of vessel comply with intact stability criteria under all conditions of loading.This unit applies to the work of a Watchkeeper Deck, Master up to 500 gross tonnage and Master up to 80 metres Near Coastal.This unit has links to legislative and certification requirements.
Notes
Elements and Performance Criteria
1 Calculate stability
  • 1.1 Vessel stability data book is accessed and checked for endorsement
  • 1.2 Data is interpreted to determine vessel safety parameters
  • 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 Spurious or incorrect information is recognised and recalculated
  • 1.6 Trim, draughts and list are adjusted as required
  • 1.7 Stability calculations are conducted at a time, frequency and scope appropriate to voyage
2 Manage weight distribution
  • 2.1 Stability calculations are used to plan weight distribution to ensure assigned load line conditions are not exceeded
  • 2.2 Weight distribution is controlled to maintain vessel within acceptable stability and stress limits for loading operation and at all stages of voyage
  • 2.3 Appropriate action is taken when weight distribution is compromising vessel safety
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
No information
No information
Replaces
State Code National Code Title Type
S5341 TDMMA1707A DETERMINE THE STABILITY AND TRIM OF THE VESSEL Unit of competency
WG355 MARA5001A Maintain vessel stability Unit of competency
Replaced By
State Code National Code Title Type
OCH72 MARA017 Maintain seaworthiness of the ship (ship stability) Unit of competency