Assessor Resource

MARA017
Maintain seaworthiness of the ship (ship stability)

Assessment tool

Version 1.0
Issue Date: May 2024


This unit involves the skills and knowledge required to determine the stability and trim of a ship to ensure that stability conditions of ship comply with intact stability criteria under all conditions of loading, discharge and transfer of cargo.

This unit applies to people working in the maritime industry in the capacity of:

Master of a commercial vessel less than 80 metres in length within the exclusive economic zone (EEZ)

Master of a commercial vessel less than 500 gross tonnage (GT)

Watchkeeper Deck.

Licensing/Regulatory Information

Legislative and regulatory requirements are applicable to this unit.

Regulatory requirements include STCW International Maritime Organization (IMO) model course competencies and areas of knowledge, understanding and proficiency, together with the estimated total hours required for lectures and practical exercises. Teaching staff should note that timings are suggestions only and should be adapted to suit individual groups of trainees depending on their experience, ability, equipment and staff available for training.

Near Coastal Qualifications:

This unit is one of the requirements to obtain Australian Maritime Safety Authority (AMSA) certification as a Master less than 80 metres Near Coastal as defined in the Marine Order 505 (Certificates of competency - National Law) 2013.

Blue Waters Qualifications:

This unit is one of the requirements to obtain AMSA certification as a Master of a commercial vessel less than 500 gross tonnage (GT) or Watchkeeper Deck and to meet regulatory requirements this unit must be delivered consistent with Marine Orders and with the relevant sections of the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW).

You may want to include more information here about the target group and the purpose of the assessments (eg formative, summative, recognition)


Evidence Required

List the assessment methods to be used and the context and resources required for assessment. Copy and paste the relevant sections from the evidence guide below and then re-write these in plain English.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria on at least one occasion and include:

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, listand 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.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:

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.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Practical assessment must occur in a workplace, or realistic simulated workplace, under the normal range of workplace conditions.

Simulations and scenarios may be used where situations cannot be provided in the workplace or may occur only rarely, in particular for situations relating to emergency procedures and adverse weather conditions where assessment would be unsafe, impractical or may lead to environmental damage.

Resources for assessment must include access to:

applicable documentation, such as legislation, regulations, codes of practice, workplace procedures and operational manuals

tools, equipment, machinery, materials and relevant personal protective equipment (PPE) currently used in industry.

Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assingnment, checklist) and due date here

Assessment task 1: [title]      Due date:

(add new lines for each of the assessment tasks)

Assessment Tasks

Copy and paste from the following data to produce each assessment task. Write these in plain English and spell out how, when and where the task is to be carried out, under what conditions, and what resources are needed. Include guidelines about how well the candidate has to perform a task for it to be judged satisfactory.

Range is restricted to essential operating conditions and any other variables essential to the work environment.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria on at least one occasion and include:

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, listand 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.

Evidence required to demonstrate competence in this unit must be relevant to and satisfy all of the requirements of the elements and performance criteria and include knowledge of:

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.

Assessors must hold credentials specified within the Standards for Registered Training Organisations current at the time of assessment.

Assessment must satisfy the Principles of Assessment and Rules of Evidence and all regulatory requirements included within the Standards for Registered Training Organisations current at the time of assessment.

Assessment processes and techniques must be appropriate to the language, literacy and numeracy requirements of the work being performed and the needs of the candidate.

Practical assessment must occur in a workplace, or realistic simulated workplace, under the normal range of workplace conditions.

Simulations and scenarios may be used where situations cannot be provided in the workplace or may occur only rarely, in particular for situations relating to emergency procedures and adverse weather conditions where assessment would be unsafe, impractical or may lead to environmental damage.

Resources for assessment must include access to:

applicable documentation, such as legislation, regulations, codes of practice, workplace procedures and operational manuals

tools, equipment, machinery, materials and relevant personal protective equipment (PPE) currently used in industry.

Copy and paste from the following performance criteria to create an observation checklist for each task. When you have finished writing your assessment tool every one of these must have been addressed, preferably several times in a variety of contexts. To ensure this occurs download the assessment matrix for the unit; enter each assessment task as a column header and place check marks against each performance criteria that task addresses.

Observation Checklist

Tasks to be observed according to workplace/college/TAFE policy and procedures, relevant legislation and Codes of Practice Yes No Comments/feedback
 
 
 
 
 
 
Stability calculations are used to plan weight distribution to ensure assigned load line conditions are not exceeded 
 
 
Data and information related to stability management is accurately recorded 
 

Forms

Assessment Cover Sheet

MARA017 - Maintain seaworthiness of the ship (ship stability)
Assessment task 1: [title]

Student name:

Student ID:

I declare that the assessment tasks submitted for this unit are my own work.

Student signature:

Result: Competent Not yet competent

Feedback to student

 

 

 

 

 

 

 

 

Assessor name:

Signature:

Date:

Assessment Record Sheet

MARA017 - Maintain seaworthiness of the ship (ship stability)

Student name:

Student ID:

Assessment task 1: [title] Result: Competent Not yet competent

(add lines for each task)

Feedback to student:

 

 

 

 

 

 

 

 

Overall assessment result: Competent Not yet competent

Assessor name:

Signature:

Date:

Student signature:

Date: