Assessor Resource

TDMMA1707A
DETERMINE THE STABILITY AND TRIM OF THE VESSEL

Assessment tool

Version 1.0
Issue Date: March 2024


The unit has application in the qualifications for a Watchkeeper (Deck), Master (Less than 500GT) and Master Class 3, i.e. Diploma of Transport&Distribution (Maritime Operations - Deck Watchkeeper) and Diploma of Transport&Distribution (Coastal Maritime Operations - Master Class 3).

UNIT DESCRIPTOR:

This unit involves the skills and knowledge required of a Watchkeeper (Deck) and Master (Less than 500 GT) to determine the stability and trim of a commercial vessel, to ensure that stability conditions of the vessel comply with the intact stability criteria of the International Maritime Organisation under all conditions of loading.

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

Prerequisites

Not applicable.


Employability Skills

Not applicable.




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.

TDMMA1707A DETERMINE THE STABILITY AND TRIM OF THE VESSEL

The Evidence Guide provides advice on assessment and must be read in conjunction with the Performance Criteria, , the Range Statement and the Assessment Guidelines for this Training Package.

1

Critical aspects of evidence required to demonstrate competency in this unit

Assessment must confirm appropriate knowledge and skills to:

a

Determine the vessel's trim and stability for all stages of the voyage

b

Take appropriate action to maintain trim, stability and stresses of the vessel within safe limits

c

Identify typical problems related to trim stability and stress of a vessel and the watertight integrity of the hull, and take appropriate action in conjunction with other officers and crew

c

Maintain records of stress and stability calculations

d

Communicate effectively with others when determining a vessel's trim and stability

2

Evidence required for demonstration of consistent performance

a

Performance is demonstrated consistently over a period of time and in a suitable range of contexts

b

Consistently applies underpinning knowledge and skills when:

1

determining the vessel's trim and stability for all stages of the voyage

2

taking appropriate action to maintain trim, stability and stresses of the vessel within safe limits

3

identifying typical problems related to trim stability and stress of a vessel and the watertight integrity of the hull, and take appropriate action in conjunction with other officers and crew

4

maintaining records of stress and stability calculations

5

communicating effectively with others when determining a vessel's trim and stability

c

Shows evidence of application of relevant workplace procedures, including:

1

relevant sections of IMO Conventions and AMSA Marine Orders

2

OH&S regulations and hazard prevention policies and procedures

3

standard operating procedures and work instructions

4

relevant vessel manufacturer's guidelines relating to the trim, stability and stress limits of the vessel

5

environmental protection procedures when pumping ballast water

(continued)

TDMMA1707A DETERMINE THE STABILITY AND TRIM OF THE VESSEL

2

Evidence required for demonstration of consistent performance

(continued)

d

Action is taken promptly to report and/or rectify out-of-limit trim, stability and stresses of the vessel in accordance with manufacturer's instructions, statutory requirements and company procedures

e

Work is completed systematically with required attention to detail

f

Recognises and adapts appropriately to cultural differences in the workplace, including modes of behaviour and interactions between crew and others

3

Context of assessment

a

Assessment of competency must comply with the assessment requirements of the relevant maritime regulations

b

Assessment of this unit must be undertaken within relevant marine authority approved and audited arrangements by a registered training organisation:

1

As a minimum, assessment of knowledge must be conducted through appropriate written/oral examinations, and

2

Appropriate practical assessment must occur:

i

at the registered training organisation; and/or

ii

on an appropriate working or training vessel

4

Specificresourcesrequired for assessment

Access is required to opportunities to:

a

participate in a range of exercises, case studies and other simulated practical and knowledge assessments that demonstrate the skills and knowledge to determine a vessel's trim and stability in a range of operational situations; and/or

b

assist in determining a vessel's trim and stability in a range of operational situations either:

i

using a simulator, meeting the requirements of Section A I/12 of the IMO STCW 95 Code, over an appropriate range of simulated loading and operational situations

ii

in appropriate practical situations on an operational commercial or training vessel


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.

REQUIRED KNOWLEDGE

This describes the knowledge required for this unit.

1

Sections of the IMO STCW 95 Code and AMSA Marine Orders dealing with the seaworthiness of vessels

2

ISM Code and associated vessel's safety management system and procedures

3

Relevant OH&S and pollution control legislation and policies

4

Procedures for determining the stability and trim of the vessel to ensure compliance with company procedures and established safety rules and regulations

5

Processes for conducting tests and checks using computer-based stability programs or other appropriate methods

6

Requirements for maintaining records of stress and stability calculations

7

Theory and calculations of vessel stability and dynamics, including:

a

computation of hydrostatic stability data of a vessel

b

calculation of a vessel's metacentre

c

calculation of the transverse and longitudinal stability using hydrostatic data

d

calculation of the moment of statical stability at small angles of heel

e

determination of the centre of gravity of a vessel using an inclining experiment

f

determining the required correction for the height of centre of gravity for the free surface effect

g

determination of the values of the righting lever and construction of righting lever curves

h

calculations for change of draught and trim when entering different water densities

11

Principal features of the structure of a vessel

12

A basic understanding of the properties and application of materials used in vessel construction

13

Construction, layout and subdivision requirements of a typical vessel, including an understanding of freeboard and bulkhead deck, watertight compartments, weathertight compartments, the bulkhead of the vessel and collision bulkhead

14

Typical construction features and stress characteristics for vessels of 500gross tonnage or more or 3,000kW propulsion power or more

15

The principal stresses which act on the structure of a vessel

16

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

17

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

18

Maritime communication techniques needed

19

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

TDMMA1707A DETERMINE THE STABILITY AND TRIM OF THE VESSEL

REQUIRED SKILLS

This describes the basic skills required for this unit.

1

Communicate effectively with other personnel when determining the stability and trim of the vessel

2

Communicate with multilingual crew where applicable using established techniques

3

Read, interpret and follow relevant sections of trim and stability documentation and related procedures as they concern the determination of the stability and trim of the vessel

4

Read and interpret vessel specifications and design drawings

5

Interpret and follow all safety management procedures and precautions when determining the stability and trim of the vessel

6

Work collaboratively with other shipboard personnel when determining the stability and trim of the vessel

7

Maintain appropriate records of the outcomes of inspection and maintenance activities to ensure the seaworthiness of the vessel

8

Identify problems that can occur when determining the stability and trim of the vessel and take appropriate action to report and address them

9

Carry out calculations required when determining the stability and trim of the vessel

10

Adapt to differing types of vessels, conditions of loading and related standard operating procedures

11

Take appropriate precautions to prevent pollution of the marine environment

12

Select and use equipment required when determining the stability and trim of the vessel

TDMMA1707A DETERMINE THE STABILITY AND TRIM OF THE VESSEL

The Range Statement relates to the unit of competency as a whole. It allows for different work environments and situations that may affect performance.

VARIABLE

SCOPE

1. GENERAL CONTEXT

a.

Work must be carried out:

1

in compliance with the relevant sections of applicable maritime regulations

b.

Work is performed:

1

relatively independently within broad operational requirements, with limited accountability and responsibility for self and others in achieving the prescribed outcomes

c.

Work involves:

1

the application of vessel construction principles and stability and stress management techniques to the conduct of stress and stability calculations and action to maintain the trim, stability and stress levels of a vessel across a wide and often unpredictable variety of operational contexts. Monitoring and supervising the implementation of a broad plan or strategy for the determining and managing the stability and trim of a vessel is required

d.

Work requires:

1

responsibility in the determination of the stability and trim of a vessel

2. WORKSITE ENVIRONMENT

a

Vessel may include:

1

any Australian or international commercial vessel

b

Stability andtrim of avessel must be maintained:

1

by day or night in both normal and emergency situations

2

under any possible conditions of sea, weather and loading

3

while underway

4

during berthing and unberthing operations

5

while anchoring or mooring

6

when bunkering

7

when berthed, moored or anchored

8

when loading/unloading cargo

(continued)

TDMMA1707A DETERMINE THE STABILITY AND TRIM OF THE VESSEL

VARIABLE

SCOPE

c

Means of maintaining the security and stability of a vessel include:

1

closing openings

2

taking precautions when using lifting equipment and associated equipment

3

position, stowage and lashing of cargo, stores and equipment

4

action to avoid or minimise cargo shift during a voyage

5

distribution of load on vessel

6

ballast management

7

measures to avoid corrosion and metal fatigue on the hull

8

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

d

Stability and stress parameters may include:

1

transverse stability - both dynamic and static

2

longitudinal stability

3

free surface effect

4

torsion

5

bending moments

6

shear forces

7

abnormal stability and stresses experienced in emergency and damage situations

e

Documentation and records may include:

1

ISM Code safety management system plans, procedures, checklists and instructions

2

operational orders

3

IMO Conventions and Class Rules

4

AMSA Marine Orders

5

Trim and Stability Booklet

6

company procedures

7

records of trim and stability calculations

8

vessel and equipment manufacturer's instructions, specifications and recommended procedures

(continued)

TDMMA1707A DETERMINE THE STABILITY AND TRIM OF THE VESSEL

VARIABLE

SCOPE

e

Documentation and records may include:

(continued)

9

instructions of relevant maritime authorities related to the determination and maintenance of the stability and trim of vessels

10

relevant Australian and international standards

f

Applicable legislation, regulations and codes may include:

1

IMO Conventions related to the determination and maintenance of the stability and trim of vessels

2

ISM Code

3

relevant sections of AMSA Marine Orders related to the determination and maintenance of the stability and trim of vessels

4

relevant international, Commonwealth, State and Territory OH&S legislation

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 and weight distribution planning is conducted at a time, frequency and scope appropriate to the proposed nature of the voyage or operation 
Weight distribution is designed to maintain the vessel within acceptable stability and stress limits for all stages of the voyage 
Trim, draughts and list are adjusted as required to safely and efficiently progress all vessel operations 
Stability and stress monitoring is conducted in time and scope relevant to the nature and speed of vessel operations, and sufficient enough to ensure that stress and stability remain within acceptable limits at all times 
Action taken where weight distribution is compromising vessel safety, is prompt and designed to maximise safety 
Tests and checks using computer-based stability programs or other appropriate methods are conducted at a frequency and scope that conform to manufacturer's instructions 

Forms

Assessment Cover Sheet

TDMMA1707A - DETERMINE THE STABILITY AND TRIM OF THE VESSEL
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

TDMMA1707A - DETERMINE THE STABILITY AND TRIM OF THE VESSEL

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: