REQUIRED KNOWLEDGE

This describes the knowledge required for this unit

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

ISM Code and associated vessels safety management system and procedures

Relevant OHampS and pollution control legislation and policies

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

Processes for conducting tests and checks using computerbased stability programs or other appropriate methods

Requirements for maintaining records of stress and stability calculations

Theory and calculations of vessel stability and dynamics including

a

computation of hydrostatic stability data of a vessel

b

calculation of a vessels 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

Principal features of the structure of a vessel

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

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

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

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

The principal stresses which act on the structure of a vessel

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

Features of the loadline and draught marks of a vessel and methods for performing related calculations

Maritime communication techniques needed

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

TDMMAA DETERMINE THE STABILITY AND TRIM OF THE VESSEL

TDMMA1707A DETERMINE THE STABILITY AND TRIM OF THE VESSEL

REQUIRED SKILLS

This describes the basic skills required for this unit

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

Communicate with multilingual crew where applicable using established techniques

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

Read and interpret vessel specifications and design drawings

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

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

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

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

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

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

Take appropriate precautions to prevent pollution of the marine environment

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

TDMMAA DETERMINE THE STABILITY AND TRIM OF THE VESSEL

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

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.

Critical aspects of evidence required to demonstrate competency in this unit

Assessment must confirm appropriate knowledge and skills to

a

Determine the vessels 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 vessels trim and stability

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

determining the vessels trim and stability for all stages of the voyage

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

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

maintaining records of stress and stability calculations

communicating effectively with others when determining a vessels trim and stability

c

Shows evidence of application of relevant workplace procedures including

relevant sections of IMO Conventions and AMSA Marine Orders

OHampS regulations and hazard prevention policies and procedures

standard operating procedures and work instructions

relevant vessel manufacturers guidelines relating to the trim stability and stress limits of the vessel

environmental protection procedures when pumping ballast water

continued

TDMMAA DETERMINE THE STABILITY AND TRIM OF THE VESSEL

TDMMA1707A DETERMINE THE STABILITY AND TRIM OF THE VESSEL

Evidence required for demonstration of consistent performance

continued

d

Action is taken promptly to report andor rectify outoflimit trim stability and stresses of the vessel in accordance with manufacturers 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

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

As a minimum assessment of knowledge must be conducted through appropriate writtenoral examinations and

Appropriate practical assessment must occur

i

at the registered training organisation andor

ii

on an appropriate working or training vessel

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 vessels trim and stability in a range of operational situations andor

b

assist in determining a vessels trim and stability in a range of operational situations either

i

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

ii

in appropriate practical situations on an operational commercial or training 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

a.

Work must be carried out:

1

b.

Work is performed:

1

c.

Work involves:

1

d.

Work requires:

1

a

Vessel may include:

1

b

Stability andtrim of avessel must be maintained:

1

2

3

4

5

6

7

8

VARIABLE

c

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

1

closing openings

2

3

4

5

6

7

8

d

Stability and stress parameters may include:

1

2

3

4

5

6

7

e

Documentation and records may include:

1

2

3

4

5

6

7

8

VARIABLE

e

(continued)

9

10

f

Applicable legislation, regulations and codes may include:

1

2

3

4