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Evidence Guide: MARA004 - Manage vessel stability

Student: __________________________________________________

Signature: _________________________________________________

Tips for gathering evidence to demonstrate your skills

The important thing to remember when gathering evidence is that the more evidence the better - that is, the more evidence you gather to demonstrate your skills, the more confident an assessor can be that you have learned the skills not just at one point in time, but are continuing to apply and develop those skills (as opposed to just learning for the test!). Furthermore, one piece of evidence that you collect will not usualy demonstrate all the required criteria for a unit of competency, whereas multiple overlapping pieces of evidence will usually do the trick!

From the Wiki University

 

MARA004 - Manage vessel stability

What evidence can you provide to prove your understanding of each of the following citeria?

Calculate stability

  1. Vessel stability data book is made available and checked for endorsement
  2. Data is interpreted to determine safety parameters for vessel
  3. Stability is accurately calculated using data extracted from vessel stability data book
  4. Stability calculations are checked to ensure they correlate with data set out in vessel stability book
  5. Miscalculations or unsafe conditions are recognised and recalculated or checked
  6. Calculated stability data is recorded using appropriate units and correct number of significant figures
Vessel stability data book is made available and checked for endorsement

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Data is interpreted to determine safety parameters for vessel

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Stability is accurately calculated using data extracted from vessel stability data book

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Stability calculations are checked to ensure they correlate with data set out in vessel stability book

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Miscalculations or unsafe conditions are recognised and recalculated or checked

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculated stability data is recorded using appropriate units and correct number of significant figures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Control vessel stress and stability

  1. Information from vessel stability information is used to determine loading limits and displacement from draft
  2. Vessel weight distribution is managed to maintain stability condition within safe limits at all times and regulatory requirements are complied with under all conditions of loading
  3. Relevant stability information is correctly communicated to others as required
  4. Stability conditions of vessel are managed in adverse weather conditions
  5. Emergencies that may jeopardise vessel stability are recognised and appropriate action is taken
Information from vessel stability information is used to determine loading limits and displacement from draft

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Vessel weight distribution is managed to maintain stability condition within safe limits at all times and regulatory requirements are complied with under all conditions of loading

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Relevant stability information is correctly communicated to others as required

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Stability conditions of vessel are managed in adverse weather conditions

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Emergencies that may jeopardise vessel stability are recognised and appropriate action is taken

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Maintain records of stability management

  1. Data and information related to stability management is accurately recorded
  2. Data and information related to stability management is filed and stored according to organisational procedures
Data and information related to stability management is accurately recorded

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Data and information related to stability management is filed and stored according to organisational procedures

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Evidence Guide

Elements describe the essential outcomes.

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

1

Calculate stability

1.1

Vessel stability data book is made available and checked for endorsement

1.2

Data is interpreted to determine safety parameters for vessel

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

Miscalculations or unsafe conditions are recognised and recalculated or checked

1.6

Calculated stability data is recorded using appropriate units and correct number of significant figures

2

Control vessel stress and stability

2.1

Information from vessel stability information is used to determine loading limits and displacement from draft

2.2

Vessel weight distribution is managed to maintain stability condition within safe limits at all times and regulatory requirements are complied with under all conditions of loading

2.3

Relevant stability information is correctly communicated to others as required

2.4

Stability conditions of vessel are managed in adverse weather conditions

2.5

Emergencies that may jeopardise vessel stability are recognised and appropriate action is taken

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

Required Skills and Knowledge

Elements describe the essential outcomes.

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

1

Calculate stability

1.1

Vessel stability data book is made available and checked for endorsement

1.2

Data is interpreted to determine safety parameters for vessel

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

Miscalculations or unsafe conditions are recognised and recalculated or checked

1.6

Calculated stability data is recorded using appropriate units and correct number of significant figures

2

Control vessel stress and stability

2.1

Information from vessel stability information is used to determine loading limits and displacement from draft

2.2

Vessel weight distribution is managed to maintain stability condition within safe limits at all times and regulatory requirements are complied with under all conditions of loading

2.3

Relevant stability information is correctly communicated to others as required

2.4

Stability conditions of vessel are managed in adverse weather conditions

2.5

Emergencies that may jeopardise vessel stability are recognised and appropriate action is taken

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:

attending to appropriate level of detail in recordkeeping

carrying out basic calculations associated with maintaining vessel stability

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

managing stability of vessel in a range of conditions

producing reliable documentation

recognising problems affecting vessel stability.

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 centre of gravity

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

dockwater and freshwater allowance

effects of free surface of liquids

factors that affect the rolling period of vessel

forces and moments

information contained in stability data books

loading and discharging weights

principal stresses that act on the structure of a vessel

principles of vessel stability

procedures for carrying out basic calculations associated with vessel stability

relationship between light displacement, loaded displacement and deadweight tonnage

stability curves

steps involved in bringing an unstable vessel to a stable condition

tonnes per centimetre immersion (TPC)

transverse and longitudinal dynamics

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

Range Statement

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:

correlation against stability book data

draft

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

trim

Loading limits include one or more of the following:

not exceeding allowable passenger carrying capacity and distribution

not exceeding vessel designed cargo carrying capacity

understanding the effect of fuel, fresh water and ballast on cargo capacity

Emergencies include one or more of the following:

cargo shift

damaged hull

flooding of cargo spaces