Unit of Competency Mapping – Information for Teachers/Assessors – Information for Learners

MARA005 Mapping and Delivery Guide
Maintain vessel stability

Version 1.0
Issue Date: March 2024


Qualification -
Unit of Competency MARA005 - Maintain vessel stability
Description
Employability Skills
Learning Outcomes and Application 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.
Duration and Setting X weeks, nominally xx hours, delivered in a classroom/online/blended learning setting.

Assessors must satisfy National Vocational Education and Training Regulator (NVR)/Australian Quality Training Framework (AQTF) assessor requirements.

Assessment must occur in workplace operational situations where it is appropriate to do so; where this is not appropriate, assessment must occur in simulated workplace operational situations that reflect workplace conditions.

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.

Resources for assessment must include access to:

tools, equipment, machinery, materials and personal protective equipment currently used in industry

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

range of relevant exercises, case studies and/or simulations.

Prerequisites/co-requisites
Competency Field A – Handling Cargo and Vessel Stability
Development and validation strategy and guide for assessors and learners Student Learning Resources Handouts
Activities
Slides
PPT
Assessment 1 Assessment 2 Assessment 3 Assessment 4
Elements of Competency Performance Criteria              
Element: Calculate stability
  • Vessel stability data book is accessed and checked for endorsement
  • Data is interpreted to determine vessel safety parameters
  • Stability is accurately calculated using data extracted from vessel stability data book
  • Stability calculations are checked to ensure they correlate with data set out in vessel stability book
  • Spurious or incorrect information is recognised and recalculated
  • Trim, draughts and list are adjusted as required
  • Stability calculations are conducted at a time, frequency and scope appropriate to voyage
       
Element: Manage weight distribution
  • Stability calculations are used to plan weight distribution to ensure assigned load line conditions are not exceeded
  • Weight distribution is controlled to maintain vessel within acceptable stability and stress limits for loading operation and at all stages of voyage
  • Appropriate action is taken when weight distribution is compromising vessel safety
       
Element: Maintain records of stability management
  • Data and information related to stability management is accurately recorded
  • Data and information related to stability management is filed and stored according to organisational procedures
       


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.

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

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 knowledge of stability, trim and stress tables, diagrams and stress calculating equipment

carrying out calculations required when determining vessel stability and trim

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

managing vessel stability in a range of conditions

reading and interpreting vessel specifications and design drawings

recognising problems affecting vessel stability and trim.

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:

calculation of vessels stability using the inclining experiment

effects of angle of loll

effects of beam and form coefficient on the stability of a vessel

effects of density of sea water on the draught and freeboard of a vessel

effects of free surface on the stability of a vessel

features of the load-line and draught marks of a vessel and methods for performing related calculations

fundamental actions to be taken in the event of partial loss of intact buoyancy

fundamentals of watertight integrity

principal stresses that act on the structure of a vessel

principal structural members of a vessel and the proper names for various parts

problems related to the control of trim, stability and stresses of vessels and appropriate action and solutions

sections of the International Maritime Organization (IMO), Standards of Training, Certification & Watchkeeping (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 vessel stability and dynamics

use of computer programs in calculating stability

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


Submission Requirements

List each assessment task's title, type (eg project, observation/demonstration, essay, assignment, 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.

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

Specifies different work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included.

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

Stability calculations must include:

calculation of areas under the curve

changes in draft and trim due to differing water densities

correction for free surface effect

draft and trim

metacentric height

moment of statical stability at small angles of heel

transverse and longitudinal stability

values for righting levers and construction of the curve of stability

Appropriate action includes one or more of the following:

amending the vessel loading plan

ballast management

reduction of free surface

Data and information related to stability management includes one or more of the following:

cargo stowage and loading plan

records of stability calculations

safety management system

stability and trim booklet

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
Vessel stability data book is accessed and checked for endorsement 
Data is interpreted to determine vessel safety parameters 
Stability is accurately calculated using data extracted from vessel stability data book 
Stability calculations are checked to ensure they correlate with data set out in vessel stability book 
Spurious or incorrect information is recognised and recalculated 
Trim, draughts and list are adjusted as required 
Stability calculations are conducted at a time, frequency and scope appropriate to voyage 
Stability calculations are used to plan weight distribution to ensure assigned load line conditions are not exceeded 
Weight distribution is controlled to maintain vessel within acceptable stability and stress limits for loading operation and at all stages of voyage 
Appropriate action is taken when weight distribution is compromising vessel safety 
Data and information related to stability management is accurately recorded 
Data and information related to stability management is filed and stored according to organisational procedures 

Forms

Assessment Cover Sheet

MARA005 - Maintain 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

MARA005 - Maintain 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: