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Evidence Guide: MARL045 - Apply basic principles of naval architecture

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

 

MARL045 - Apply basic principles of naval architecture

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

Calculate shipboard areas and volumes

  1. Basic principal structural members of ship and proper names of various parts are detailed
Basic principal structural members of ship and proper names of various parts are detailed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Simpson’s Rules are applied to calculate shipboard areas

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Simpson’s Rules are applied to calculate shipboard volumes

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate vessel displacement

  1. Tonnes per centimetre (TPC) values and Simpson’s Rules are applied to calculate vessel displacement
Tonnes per centimetre (TPC) values and Simpson’s Rules are applied to calculate vessel displacement

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculations are performed using TPC values and Simpson’s Rules to solve problems related to vessel displacement

Completed
Date:

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Calculate ship dimensions

  1. Ship form dimensions are calculated using coefficients for areas
Ship form dimensions are calculated using coefficients for areas

Completed
Date:

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Ship form coefficients for underwater volumes are calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Influence of common hull modifications on hull form coefficients is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculations are performed to solve problems of ship form coefficients following change to vessel length resulting from mid-body insertion or removal

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain position of centre of gravity (CG) of vessel in relation to its keel and midships

  1. CG calculations for a vessel are performed
CG calculations for a vessel are performed

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

How CG changes with redistribution, addition and/or removal of mass is explained

Completed
Date:

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How addition, removal or transfer of mass may cause overturning moments is identified

Completed
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Problems are solved involving addition, removal and vertical movement of mass by performing CG calculations for typical vessel loaded conditions

Completed
Date:

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Calculations are performed using results from inclining experiments to obtain initial stability characteristics

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Explain effects of water density and flooding of mid-length compartment on vessel draft

  1. Relationship between changes in underwater volume and changes in water density is outlined
Relationship between changes in underwater volume and changes in water density is outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Freshwater allowance of a vessel is determined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Change in mean draft for vessel movement between waters of different densities is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Volume lost-volume gained relationship for flooded compartments is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculations are performed to solve problems of mid-length compartment flooding in simple box-shaped hull forms

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Fundamental actions to be taken in the event of partial loss of intact buoyancy are identified

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Perform calculations related to propellers and vessel speed

  1. Relationship between propellers and vessel speed is explained
Relationship between propellers and vessel speed is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Problems related to vessel speed and propellers are solved by calculating theoretical, apparent and true speeds, apparent and true slips, wake speed and Taylor wake fraction

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Impact of fouling on vessel hull and propeller is outlined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate voyage and daily fuel consumptions

  1. Fuel consumption is determined by applying admiralty coefficient for fuel consumption taking account of ship speed, shaft power and displacement
Fuel consumption is determined by applying admiralty coefficient for fuel consumption taking account of ship speed, shaft power and displacement

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculations are performed to solve problems of vessel fuel consumption taking account of ship speed, shaft power and displacement

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Impact of fouling on vessel fuel consumption is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Calculate pressures and loads on surfaces due to hydrostatics

  1. Standard formula for hydrostatic pressure is defined
Standard formula for hydrostatic pressure is defined

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Hydrostatic load on vertical and horizontal surfaces is calculated

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Method of calculating loads on typical tank structures for different filling rates is explained

Completed
Date:

Teacher:		 Evidence:

 

 

 

 

 

 

 

Assessed

Teacher: ___________________________________ Date: _________

Signature: ________________________________________________

Comments:

 

 

 

 

 

 

 

 

Instructions to Assessors

Required Skills and Knowledge

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:

assessing own work outcomes and maintaining knowledge of current codes, standards, regulations and industry practices

drawing load line mark and the load lines for a ship of a given summer moulded draught, displacement and tonnes per centimetre (TPC) immersion in saltwater

explaining basic principles of naval architecture

identifying actions to be taken in the event of partial loss of intake buoyancy

identifying and applying relevant mathematical formulas and techniques to solve basic problems related to speed, fuel consumption and stability of commercial vessels

identifying and interpreting numerical and graphical information, and performing mathematical calculations related to shipboard areas and volumes, vessel displacement, angle of loll, ship dimensions, centre of gravity (CG), vessel speed, fuel consumption and hydrostatic pressure

identifying, collating and processing information required to perform calculations related to speed, fuel consumption and stability of commercial vessels

imparting knowledge and ideas through verbal, written and visual means

performing accurate and reliable calculations

reading and interpreting written information needed to perform calculations related to the seaworthiness of commercial vessels

solving problems using appropriate laws and principles

using calculators to perform mathematical calculations.

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:

basic structural members of a ship and the proper names of the various parts

buoyancy

calculations

CG, longitudinal centre of gravity (LCG) and vertical centre of gravity (VCG)

coefficients for areas, including:

midships (CM)

waterplane (CW)

coefficients for underwater volumes, including:

block (Cb)

prismatic (Cp)

curves of statistical stability

density correction formula

effects of slack tanks

filling rates, including:

accidental flooding

tank testing

fuel consumption calculations

hydrostatic pressure

movement of CG

principle of displacement

problems related to vessel displacement, including:

addition of mass

removal of mass

ship:

displacement

measurements

stability calculations

stability including statistical and initial

types, including:

bulk carriers

combination carriers

container

general cargo

oil, chemical and gas tankers

passenger

roll-on and roll-off (ro-ro)

ship construction, including:

bow and stern regions

fitting

hull structure

load line and draught marks, including:

chart of zones, areas and seasonal periods used to find the applicable load line

definition of 'freeboard'

definition of 'assigned summer freeboard'

freeboard, measured from the upper edge of the deck line to the water on each side, including checks that the ship is within its permitted limits of loading

height of sill varies between different types of ships based on load line rules

how to read draughts

items in the conditions of assignment of freeboard

load line mark and the load lines for a ship of a given summer moulded draught, displacement and TPC immersion in saltwater

where the deck line is marked

rudders and propellers

ship dimensions and form

ship stresses, including:

calculations for pressure at any depth below the liquid surface, given the density of the liquid

causes of corrosion onboard

'hogging' and 'sagging' and distinguishing between them

hogging and sagging stresses caused by sea state

hogging and sagging stresses resulting in tensile or compressive forces in the deck and bottom structure

liquid pressure loading on the ship's hull

loading conditions which give rise to hogging and sagging stresses

methods that are being used to minimise the effects of corrosion

'pounding' or 'slamming' and which part of the ship is affected

stress set up by liquid sloshing in a partly filled tank

racking stress and it causes

shear force and bending moments

stresses caused by localised loading

water pressure loads on ship's hull

shipboard:

areas, including:

bulkheads/elemental areas

water planes

mass, including:

ballast

cargo

fuel

passengers

volumes, including:

transverse sectional areas

water plane areas

Simpson’s Rules

TPC immersion

trim and stress tables, diagrams and stress calculating equipment

vessel speed calculations

watertight integrity.

Range Statement

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