MARA017 — Maintain seaworthiness of the ship (ship stability)
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What an assessment for MARA017 must cover
57 assessable components: 3 elements (12 performance criteria), 24 performance evidence and 21 knowledge evidence requirements. An audit-defensible tool maps every question and task back to these — that mapping is the coverage matrix Auditori generates alongside the assessment.
Elements & performance criteria
1 Calculate stability
- 1.1Ship stability data book is accessed and checked for endorsement
- 1.2Sample worked data is interpreted to determine ship safety parameters
- 1.3Transverse and longitudinal stability is accurately calculated using data extracted from the body of ship stability data book
- 1.4Stability calculations are checked to ensure they correlate with data set out in ship stability book
- 1.5Spurious or incorrect information is recognised and recalculated
- 1.6Trim, draughts and lists are adjusted, as required
- 1.7Stability calculations are conducted at a time, frequency and scope appropriate to voyage
2 Manage weight distribution
- 2.1Stability calculations are used to plan weight distribution to ensure assigned load line conditions are not exceeded
- 2.2Weight distribution is controlled to maintain ship within acceptable stability and stress limits for loading operation and at all stages of voyage
- 2.3Appropriate action is taken when weight distribution is compromising ship safety
3 Maintain records of stability management
- 3.1Data and information related to stability management is accurately recorded
- 3.2Data and information related to stability management is filed and stored according to organisational procedures
Performance evidence
- applying appropriate actions to correct weight distribution, including:
- amending the ship loading plan
- ballast management
- reduction of free surface
- applying stability, trim and stress tables, diagrams and stress calculating equipment
- carrying out calculations required when determining ship stability, list and trim
- managing ship stability in a range of conditions
- managing the loading and weight distribution of a ship to ensure assigned load line conditions are not exceeded
- reading and interpreting ship specifications and design drawings
- recognising problems affecting ship stability and trim
- undertaking stability calculations, including:
- calculation of areas under the curve
- changes in draft and trim due to differing water densities
- correction for free surface effect
- dead weight
- displacement
- draft and trim
- effect of slack tanks
- metacentric height
- moment of static stability at small angles of heel
- movement of the centre of gravity
- tonnes per centimetre (TPC)
- transverse and longitudinal stability
- values for righting levers and construction of the curve of stability
Knowledge evidence
- buoyancy, including:
- fundamental actions to be taken in the event of partial loss of intact buoyancy
- calculation of ships stability using the inclining experiment
- data and information related to stability management, including:
- cargo stowage and loading plan
- records of stability calculations
- safety management system (SMS)
- stability and trim booklet
- effects of angle of loll
- effects of beam and form coefficient on the stability of a ship
- effects of density of sea water on the draught and freeboard of a ship, including freshwater allowance and dock water allowance
- effects of free surface on the stability of a ship
- features of the load-line and draught marks of a ship and methods for performing related calculations
- fundamentals of watertight integrity
- principal stresses that act on the structure of a ship
- principal structural members of a ship and the proper names for various parts
- problems related to the control of trim, stability and stresses of ships and appropriate actions and solutions
- sections of the International Maritime Organization (IMO), International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW) and Australian Maritime Safety Authority (AMSA) Marine Orders related to intact stability criteria
- stability, trim and stress tables, diagrams and stress calculating equipment
- theory and calculations of ship stability and dynamics, including movement of weights
- use of computer programs in calculating stability
Unit content sourced from training.gov.au — © Commonwealth of Australia, licensed under CC BY 4.0. Auditori is not affiliated with the Department of Employment and Workplace Relations.
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Questions about assessing MARA017
What does an assessment tool for MARA017 need to cover?
To satisfy the Principles of Assessment and Rules of Evidence, an assessment for MARA017 needs to address all 57 unit components: 3 elements with 12 performance criteria, 24 performance evidence requirements, 21 knowledge evidence requirements, and the foundation skills. A coverage matrix mapping each question and task to these components is what an auditor looks for.
How does Auditori generate an assessment tool for MARA017?
Auditori pulls the current release of MARA017 from training.gov.au and generates a complete package: candidate assessment, assessor guide with model answers and observation criteria, and a coverage matrix mapping every component. A suitably qualified person then reviews and approves the draft in a built-in workflow — consistent with ASQA's guidance on AI use in VET — before export as branded PDF and editable Word.
Is the first assessment tool really free?
Yes. Every new account includes one free credit — enough to generate the complete assessment tool for MARA017 — with no card and no subscription required. After that it's pay-as-you-go per unit.
Can I check my existing MARA017 assessment instead of generating a new one?
Yes — upload your existing assessment or learner guide and Auditori maps it against every element, performance criterion, PE and KE of MARA017, showing exactly what's covered and what's missing. Mapping costs a quarter of a credit.
Related units
- MARA011 — Contribute to basic operations of ships in polar waters
- MARA012 — Contribute to basic cargo operations on liquefied gas tankers
- MARA013 — Contribute to basic cargo operations on oil and chemical tankers (basic oil and chemical)
- MARA014 — Contribute to basic operations of a ship subject to IGF Code
- MARA015 — Contribute to safe anchor handling and towing operations
- MARA016 — Contribute to safe cargo operations on offshore support vessels
- MARA018 — Manage advanced chemical tanker cargo operations
- MARA019 — Manage advanced liquefied gas tanker cargo operations
- MARA020 — Manage advanced oil tanker cargo operations
- MARA021 — Manage advanced operations of a ship subject to IGF Code
- MARA022 — Manage loading, discharging and stowing of cargo
- MARA023 — Manage trim, stability and stress of a vessel
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