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

MARM011 Mapping and Delivery Guide
Calculate, assess and report on vessel trim and stability

Version 1.0
Issue Date: March 2024


Qualification -
Unit of Competency MARM011 - Calculate, assess and report on vessel trim and stability
Description
Employability Skills
Learning Outcomes and Application This unit involves the skills and knowledge required to assess and report on vessel trim and intact stability as part of the survey function. It is limited to undertaking practical stability tests, simplified stability calculations, reporting inclining experiments and consideration of damage stability implications.This unit applies to people working in the maritime industry as a domestic commercial vessel marine surveyor and may form part of accreditation requirements for surveyors under Australian legislation.No licensing, legislative or certification requirements apply to this unit at the time of publication.
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 satisfy the National Vocational Education and Training Regulator (NVR)/Australian Quality Training Framework (AQTF) standards.

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.

Assessment must occur in workplace operational situations or where these are not available, in simulated workplace operational situations or an industry-approved marine operations site that replicates workplace conditions, where calculating, assessing and reporting on vessel trim and stability can be conducted

Resources for assessment include access to:

relevant documentation including workplace procedures, regulations, codes of practice and operation manuals

tools, equipment, materials and personal protective equipment currently used in industry to assess a vessels trim and intact stability.

Performance should be demonstrated consistently over time and in a suitable range of contexts.

Prerequisites/co-requisites
Competency Field M – Marine Surveying
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: Plan and prepare stability testing
  • Applicable stability criteria for class of vessel and its operations are identified and confirmed against regulatory requirements
  • Differences between Uniform Shipping Laws (USL) and National Standard for Commercial Vessels (NSCV) standards for assessing stability are identified and applied to survey plan as required
  • Information and data is used to establish and verify stability characteristics required for safe operation
  • Types of stability related hazards that may occur during all types of operations are identified
  • Range of intended and/or likely vessel loading conditions are accurately identified and their impact on stability is assessed
       
Element: Calculate vessel trim and stability
  • Simplified stability calculations are performed to assess compliance with applicable stability criteria
  • Stability assessment methods for equivalent solutions are applied as necessary according to regulatory requirements
  • Trim, draughts and freeboard are measured accurately to safely and efficiently allow assessment of compliance with criteria
  • Effects of weight distribution that may compromise vessel safety are included in stability assessment
  • Computer-based stability programs are used as appropriate to assist with assessing compliance
  • Results are recorded and verified to confirm compliance
  • Appropriate methods are used to ensure vessel is not put at risk during assessment
       
Element: Apply tests, assessments and theories to confirm compliance
  • Tests and assessments that could assist to confirm stability compliance are verified and carried out according to safety instructions
  • Small angle stability theories are used to establish metacentric height (GM) through transverse movement of weights across vessel deck
  • Causes of inaccuracies and limitations of assumptions in tests, assessments and theories are interpreted accurately and considered in stability assessment report
       
Element: Identify other impacts on stability calculations
  • Types and effects of damage on vessel stability are identified and considered according to regulatory requirements
  • Damage stability considerations are accurately identified and effect of damage is correctly quantified
  • Operational impact on stability is identified and considered in compliance assessment
  • Vessel safety management plan is reviewed to ensure known or likely impacts on stability are included
       
Element: Document and report findings
  • Records are maintained and reports are prepared according to regulatory and organisational guidelines
  • Survey report is completed according to regulatory requirements
       


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.

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Plan and prepare stability testing

1.1

Applicable stability criteria for class of vessel and its operations are identified and confirmed against regulatory requirements

1.2

Differences between Uniform Shipping Laws (USL) and National Standard for Commercial Vessels (NSCV) standards for assessing stability are identified and applied to survey plan as required

1.3

Information and data is used to establish and verify stability characteristics required for safe operation

1.4

Types of stability related hazards that may occur during all types of operations are identified

1.5

Range of intended and/or likely vessel loading conditions are accurately identified and their impact on stability is assessed

2

Calculate vessel trim and stability

2.1

Simplified stability calculations are performed to assess compliance with applicable stability criteria

2.2

Stability assessment methods for equivalent solutions are applied as necessary according to regulatory requirements

2.3

Trim, draughts and freeboard are measured accurately to safely and efficiently allow assessment of compliance with criteria

2.4

Effects of weight distribution that may compromise vessel safety are included in stability assessment

2.5

Computer-based stability programs are used as appropriate to assist with assessing compliance

2.6

Results are recorded and verified to confirm compliance

2.7

Appropriate methods are used to ensure vessel is not put at risk during assessment

3

Apply tests, assessments and theories to confirm compliance

3.1

Tests and assessments that could assist to confirm stability compliance are verified and carried out according to safety instructions

3.2

Small angle stability theories are used to establish metacentric height (GM) through transverse movement of weights across vessel deck

3.3

Causes of inaccuracies and limitations of assumptions in tests, assessments and theories are interpreted accurately and considered in stability assessment report

4

Identify other impacts on stability calculations

4.1

Types and effects of damage on vessel stability are identified and considered according to regulatory requirements

4.2

Damage stability considerations are accurately identified and effect of damage is correctly quantified

4.3

Operational impact on stability is identified and considered in compliance assessment

4.4

Vessel safety management plan is reviewed to ensure known or likely impacts on stability are included

5

Document and report findings

5.1

Records are maintained and reports are prepared according to regulatory and organisational guidelines

5.2

Survey report is completed according to regulatory requirements

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

Analysing, planning and assessing trim and stability should be conducted for at least five different vessels varying in size and operational limits and include:

accessing and interpret a variety of information

analysing information and data

anticipating and solving problems that may occur in calculations

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

calculating trim and stability using statutory formula and criteria

carrying out and reporting on at least three inclining experiments and three lightship measurements

carrying out a range of different stability tests and assessments

collating and preparing required documentation

collecting and accurately interpreting valid and reliable data and/or regulations

developing effective planning documents

ensuring behaviour reflects relevant current legislative and regulatory requirements

identifying and correcting causes of erratic or excessive deviation in mass movements during an inclining experiment

identifying gaps in data and sourcing additional information

identifying hazards, assessing risks, and developing and implementing risk treatment options

liaising with relevant people to obtain information

reading and accurately interpreting vessel specifications and design drawings

relating effectively to people from a range of social, cultural and ethnic backgrounds

resolving conflict and negotiating effectively

selecting and using appropriate equipment

undertaking ballast management

undertaking research

using calculation and stability software.

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

application of vessel construction principles and stability assessments applicable to a wide range of operational contexts

calculations and formulas related to determining vessel trim and stability

cargo loading and impact on stability

configuration and subdivision requirements of a typical vessel including:

collision bulkhead

down flooding

deck edge immersion

freeboard and bulkhead deck

watertight compartments

weather tight compartments

vessel bulkhead

correct identification and use of equipment and data required for stability tests and calculations

damage control measures designed to maintain, stabilise or restore hull watertight integrity

definition of intact stability

distribution of load on a vessel

implications and management of free surface effect

information and data requirements, and statutory documents such as stability book, safety management plans, certificate of operation, vessel history

naval architectural theory to the level necessary to carry out stability assessments for a range of domestic commercial vessels surveyor is intending to survey

procedures for:

carrying out an inclining experiment

determining weights to be added or subtracted from calculated displacement to determine lightship displacement

maintaining vessel security and stability

measuring draughts and or freeboard to determine displacement of a vessel i.e. carrying out a lightship measurement

recordkeeping requirements

regulatory requirements for:

calculating vessel stability

surveying vessels

vessel compliance to trim and stability

requirements for conducting a load line survey

risk management

safety management procedures and precautions when determining vessel trim and stability

simplified stability criteria as outlined in NSCV Part C6A and C6C

survey report requirements

theories relating to damage stability and precautions to be taken to ensure down-flooding or progressive flooding does not occur

typical problems and solutions related to vessel trim and stability

types of simplified stability tests

WHS/OHS legislation, policies and procedures.


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.

Elements describe the essential outcomes.

Performance criteria describe the performance needed to demonstrate achievement of the element.

1

Plan and prepare stability testing

1.1

Applicable stability criteria for class of vessel and its operations are identified and confirmed against regulatory requirements

1.2

Differences between Uniform Shipping Laws (USL) and National Standard for Commercial Vessels (NSCV) standards for assessing stability are identified and applied to survey plan as required

1.3

Information and data is used to establish and verify stability characteristics required for safe operation

1.4

Types of stability related hazards that may occur during all types of operations are identified

1.5

Range of intended and/or likely vessel loading conditions are accurately identified and their impact on stability is assessed

2

Calculate vessel trim and stability

2.1

Simplified stability calculations are performed to assess compliance with applicable stability criteria

2.2

Stability assessment methods for equivalent solutions are applied as necessary according to regulatory requirements

2.3

Trim, draughts and freeboard are measured accurately to safely and efficiently allow assessment of compliance with criteria

2.4

Effects of weight distribution that may compromise vessel safety are included in stability assessment

2.5

Computer-based stability programs are used as appropriate to assist with assessing compliance

2.6

Results are recorded and verified to confirm compliance

2.7

Appropriate methods are used to ensure vessel is not put at risk during assessment

3

Apply tests, assessments and theories to confirm compliance

3.1

Tests and assessments that could assist to confirm stability compliance are verified and carried out according to safety instructions

3.2

Small angle stability theories are used to establish metacentric height (GM) through transverse movement of weights across vessel deck

3.3

Causes of inaccuracies and limitations of assumptions in tests, assessments and theories are interpreted accurately and considered in stability assessment report

4

Identify other impacts on stability calculations

4.1

Types and effects of damage on vessel stability are identified and considered according to regulatory requirements

4.2

Damage stability considerations are accurately identified and effect of damage is correctly quantified

4.3

Operational impact on stability is identified and considered in compliance assessment

4.4

Vessel safety management plan is reviewed to ensure known or likely impacts on stability are included

5

Document and report findings

5.1

Records are maintained and reports are prepared according to regulatory and organisational guidelines

5.2

Survey report is completed according to regulatory requirements

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

Applicable stability criteria includes one of the following:

NSCV guidelines

USL Code

Regulatory requirements include one of the following:

Marine Safety (Domestic Commercial Vessel) National Law

NSCV

Information and data include one or more of the following:

cargo information

load lines

means to:

sound tanks

read draught marks

stability book

Tests and assessments include one or more of the following:

buoyancy and stability after flooding

freeboard

lightship measurement

practical inclining

roll period test

simplified stability tests

stability proof test

Types and effects of damage include one or more of the following:

added mass

flooding

large amounts of water on deck

lost buoyancy

Stability considerations include one or more of the following:

ballast management

closing openings

damage control measures to maintain, stabilise or restore watertight integrity of hull

distribution of load on a vessel

positioning of stowage and lashing of cargo, stores and equipment

taking action to avoid or minimise cargo shift

taking precautions when using lifting equipment and other associated equipment

Operational impact includes one or more of the following:

ballast

cargo

crew movement

cross connections

lifting gear (including cranes on deck)

passengers and passenger movements

towing

vessel mooring arrangements

wind/ice and other weather constraints

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
Applicable stability criteria for class of vessel and its operations are identified and confirmed against regulatory requirements 
Differences between Uniform Shipping Laws (USL) and National Standard for Commercial Vessels (NSCV) standards for assessing stability are identified and applied to survey plan as required 
Information and data is used to establish and verify stability characteristics required for safe operation 
Types of stability related hazards that may occur during all types of operations are identified 
Range of intended and/or likely vessel loading conditions are accurately identified and their impact on stability is assessed 
Simplified stability calculations are performed to assess compliance with applicable stability criteria 
Stability assessment methods for equivalent solutions are applied as necessary according to regulatory requirements 
Trim, draughts and freeboard are measured accurately to safely and efficiently allow assessment of compliance with criteria 
Effects of weight distribution that may compromise vessel safety are included in stability assessment 
Computer-based stability programs are used as appropriate to assist with assessing compliance 
Results are recorded and verified to confirm compliance 
Appropriate methods are used to ensure vessel is not put at risk during assessment 
Tests and assessments that could assist to confirm stability compliance are verified and carried out according to safety instructions 
Small angle stability theories are used to establish metacentric height (GM) through transverse movement of weights across vessel deck 
Causes of inaccuracies and limitations of assumptions in tests, assessments and theories are interpreted accurately and considered in stability assessment report 
Types and effects of damage on vessel stability are identified and considered according to regulatory requirements 
Damage stability considerations are accurately identified and effect of damage is correctly quantified 
Operational impact on stability is identified and considered in compliance assessment 
Vessel safety management plan is reviewed to ensure known or likely impacts on stability are included 
Records are maintained and reports are prepared according to regulatory and organisational guidelines 
Survey report is completed according to regulatory requirements 

Forms

Assessment Cover Sheet

MARM011 - Calculate, assess and report on vessel trim and stability
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I declare that the assessment tasks submitted for this unit are my own work.

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Assessment Record Sheet

MARM011 - Calculate, assess and report on vessel trim and 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

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