Assessor Resource

MARA024
Manage vessel stability

Assessment tool

Version 1.0
Issue Date: May 2024


This unit involves the skills and knowledge required to manage the dynamic factors affecting the stability of a vessel less than 80 metres.

It includes calculating stability, controlling vessel stress and stability, and maintaining records of stability management.

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

Master on commercial vessels less than 35 metres in length within the exclusive economic zone (EEZ)

Master on vessels less than 80 metres in length in inshore waters

Chief Mate or Deck Watchkeeper on vessels less than 80 metres in length within the EEZ

Chief Engineer on vessels with inboard engines less than 1500 kW within the EEZ

Second Engineer on vessels with inboard engines less than 3000 kW within the EEZ

Engineer on vessels with outboard engines with unlimited propulsion power within the EEZ

assistant under the direct supervision of the Chief Engineer

worker in the engine room of a vessel less than 80 metres in length with propulsion power less than 3000 kW.

Licensing/Regulatory Information

Legislative and regulatory requirements are applicable to this unit.

This unit is one of the requirements to obtain Australian Maritime Safety Authority (AMSA) certification as a Master less than 35 metres Near Coastal, Mate less than 80 metres and Marine Engine Driver Grade 1 Near Coastal as defined in the National Standard for Commercial Vessels (NSCV) Part D.

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:

attending to appropriate level of detail in recordkeeping

carrying out basic calculations associated with maintaining vessel stability which must include:

dock water and freshwater allowance

draft

final height of the centre of gravity (CG) above the keel of a vessel

trim

final position of the longitudinal centre of gravity (LCG)

free surface effect and vertical distance between keel and CG adjusted for free surface effect (CGf)

metacentric height (GM) and GM adjusted for free surface effect (GMf)

righting moments

checking calculations to ensure correlation against stability book data

managing loading and weight distribution of vessel to ensure assigned load line conditions are not exceeded.

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:

bilging and permeability

centroids and CG

change of draught and trim (MCT)

conditions of stable, neutral and unstable equilibrium and effects of disturbing vessel from upright

construction features and stress characteristics for vessels

density and specific gravity

dock water and freshwater allowance

effects of free surface of liquids

emergencies, including:

adverse weather and water conditions

any other emergency identified by risk assessment that may affect stability

cargo shift

damaged hull

flooding of cargo spaces

factors that affect the rolling period of vessel

forces and moments

information contained in stability data books

loading and discharging weights

loading limits, including:

not exceeding allowable passenger carrying capacity and distribution

not exceeding cargo carrying capacity of the vessel

the effect of fuel, freshwater and ballast on cargo carrying capacity

maintenance of stability during firefighting operations

principal stresses that act on the structure of a vessel

principles of vessel stability

problems affecting vessel stability

procedures for carrying out basic calculations associated with vessel stability

relationship between light displacement, loaded displacement and deadweight tonnage

stability curves

stability of vessel in a range of conditions

stability terms and definitions

steps involved in bringing an unstable vessel to a stable condition

stress calculations

tonnes per centimetre (TPC) immersion

transverse and longitudinal dynamics

trim and stress tables

work health and safety (WHS)/occupational health and safety (OHS) requirements and work practices.

Assessors must satisfy applicable regulatory requirements, which include requirements in the Standards for Registered Training Organisations current at the time of assessment.

As a minimum, assessment must satisfy applicable regulatory requirements, which include requirements in 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, safety management system (SMS), vessel stability books, workplace procedures and operational manuals

tools, equipment, machinery, materials and 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:

attending to appropriate level of detail in recordkeeping

carrying out basic calculations associated with maintaining vessel stability which must include:

dock water and freshwater allowance

draft

final height of the centre of gravity (CG) above the keel of a vessel

trim

final position of the longitudinal centre of gravity (LCG)

free surface effect and vertical distance between keel and CG adjusted for free surface effect (CGf)

metacentric height (GM) and GM adjusted for free surface effect (GMf)

righting moments

checking calculations to ensure correlation against stability book data

managing loading and weight distribution of vessel to ensure assigned load line conditions are not exceeded.

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:

bilging and permeability

centroids and CG

change of draught and trim (MCT)

conditions of stable, neutral and unstable equilibrium and effects of disturbing vessel from upright

construction features and stress characteristics for vessels

density and specific gravity

dock water and freshwater allowance

effects of free surface of liquids

emergencies, including:

adverse weather and water conditions

any other emergency identified by risk assessment that may affect stability

cargo shift

damaged hull

flooding of cargo spaces

factors that affect the rolling period of vessel

forces and moments

information contained in stability data books

loading and discharging weights

loading limits, including:

not exceeding allowable passenger carrying capacity and distribution

not exceeding cargo carrying capacity of the vessel

the effect of fuel, freshwater and ballast on cargo carrying capacity

maintenance of stability during firefighting operations

principal stresses that act on the structure of a vessel

principles of vessel stability

problems affecting vessel stability

procedures for carrying out basic calculations associated with vessel stability

relationship between light displacement, loaded displacement and deadweight tonnage

stability curves

stability of vessel in a range of conditions

stability terms and definitions

steps involved in bringing an unstable vessel to a stable condition

stress calculations

tonnes per centimetre (TPC) immersion

transverse and longitudinal dynamics

trim and stress tables

work health and safety (WHS)/occupational health and safety (OHS) requirements and work practices.

Assessors must satisfy applicable regulatory requirements, which include requirements in the Standards for Registered Training Organisations current at the time of assessment.

As a minimum, assessment must satisfy applicable regulatory requirements, which include requirements in 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, safety management system (SMS), vessel stability books, workplace procedures and operational manuals

tools, equipment, machinery, materials and 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
 
 
 
 
 
Information from vessel stability information is used to determine loading limits and displacement from draft 
 
 
 
 
Data and information related to stability management is accurately recorded 
 

Forms

Assessment Cover Sheet

MARA024 - Manage vessel 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

MARA024 - Manage vessel 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: