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
What evidence can you provide to prove your understanding of each of the following citeria?
Apply Simpson’s First and Second Rules to calculate areas, volumes and displacement of ship shapes using TPC values
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Simpson’s (Mid-Ordinate) First Rule and Second Rule, with typical applications, using half and full ordinates is explained Completed |
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Areas of water planes, bulkheads and elemental areas are calculated Completed |
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Problems of immersed hull volume, appendage volumes and non-standard tank volumes are solved Completed |
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Archimedes Principles of buoyancy are explained Completed |
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TPC with application of Simpson’s Rules to find displacement is explained Completed |
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Change in draught with mass addition and removal using TPC to give parallel sinkage or rise is explained Completed |
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Problems of vessel displacement given water plane areas or TPC values are solved Completed |
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TPC curves and displacement curves for given values are constructed Completed |
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Apply ship form coefficients
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Ship form coefficients and their uses are defined Completed |
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Coefficients are calculated given underwater form particulars Completed |
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Problems of ship form coefficients following change in length and draught are solved Completed |
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Calculate changes in draft due to fluid density
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Load line freeboard measurement and markings required for change in fluid density are explained Completed |
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Formula for change in mean draft due to change in density is derived Completed |
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Change in draft between fluids of two densities are calculated Completed |
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Formula to derive fresh water allowance is applied Completed |
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Changes in mean draft due to changes in density and loading are calculated Completed |
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Solve stability problems
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Calculations are performed to solve problems associated with adding, removing and transferring masses on ships Completed |
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Centre of gravity of a suspended mass is explained Completed |
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Calculations are performed to solve problems associated with suspended masses Completed |
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How KG and LCG can be obtained from stability information is explained Completed |
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Creation of overturning moments by mass addition, removal or transfer transversely, including cargo shift or loss is explained Completed |
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Calculations are performed to solve problems of small angle transverse stability Completed |
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Purpose of inclining experiments, weighing tests and roll period tests to determine stability characteristics are explained Completed |
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Calculations are performed to solve problems associated with inclining experiments and roll period tests Completed |
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Calculate loss of transverse stability due to fluid free surface
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Principles of free surface loss of GM are explained Completed |
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KG solid is differentiated from KG fluid Completed |
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Second moment of area is applied to obtain free surface moment of inertia and is related to stability criteria for standard conditions Completed |
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Problems of liquid free surface for simple and complex geometry compartments including variation in filling rates are solved Completed |
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Wall-sided formula and factors that lead to negative GM creating an angle of loll are explained Completed |
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Problems involving correction of loll angle are solved Completed |
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Calculate large angle transverse static and dynamical stability
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How GZ and KN righting levers are obtained from cross curves of stability is explained Completed |
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KN values are converted to GZ Completed |
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Dynamical stability is explained Completed |
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IMO requirements for intact and damaged stability cases as well as different vessel types, using typical values from stability files are applied Completed |
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Problems of large angle transverse stability, including changes due to redistribution of mass on board are solved and results against IMO requirements are evaluated Completed |
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Graphical solutions to large angle transverse stability problems identifying key points are prepared Completed |
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Solve problems of hydrostatics
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Importance of area and volume centroids is explained Completed |
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Methods of determining KB, LCB, LCF and bulkhead area centroids are explained Completed |
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Calculations are performed to determine centroids of shipboard areas and volumes Completed |
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Impact of hydrostatic pressure and load on vertical and horizontal surfaces is explained Completed |
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Methods of calculating pressure, load, shear force and bending moment diagrams for typical tank structures are applied Completed |
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Problems are solved in hydrostatics relating to pressure and loads on ship structures, including graphical solution of shear force diagrams of rectangular bulkheads and their elemental stiffeners Completed |
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Effective weld area of bulkhead attachment is calculated Completed |
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Perform trim and draft calculations
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Meaning of trim and how trim occurs is explained Completed |
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Standard trimming moments resulting from mass addition, removal, transfer, flooding or combinations of these factors are explained Completed |
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Change of trim is calculated using MCT1cm, GML and BML Completed |
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Problems of applied trimming moments to determine final vessel draughts are solved Completed |
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True mean draft is differentiated from apparent mean draft by applying correction for layer Completed |
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Calculations are performed to solve problems associated with true mean draft Completed |
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Problems of combined trim and transverse stability from typical fluid transfer in both a longitudinal and transverse direction are solved Completed |
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Calculate voyage and daily fuel consumption
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Problems of fuel consumption are solved using the admiralty coefficient for various speed indexes Completed |
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Optimum vessel speed for combined propulsive and auxiliary fuel consumptions is determined Completed |
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Calculations are performed to show relationships between fuel consumption and displacement Completed |
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Calculations are performed to show relationships between daily fuel consumption and speed Completed |
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Calculations are performed to show relationships between voyage consumption, speed and distance travelled Completed |
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Apply principles of loading to ship structures to determine strength characteristics
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Distribution of concentrated and point masses, buoyancy, load, shear force and bending moments are explained using simple loaded beam principles Completed |
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Calculations and diagrams are used to solve problems involving loaded conditions of simple box-shaped vessels, identifying location and value of maximum shear force and bending moments Completed |
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Empirical formula is applied to solve problems involving bending and direct stress in beams Completed |
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Apply empirical formula to solve vibration problems
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Causes and adverse effects of ship vibration are explained Completed |
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Natural hull vibration is explained Completed |
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Schlick formula is applied to determine natural frequency of ship hull vibrations Completed |
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Ways of preventing or reducing local vibration are identified Completed |
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Solve buoyancy problems
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Calculations are performed to solve problems of lost buoyancy and sinkage into homogeneous mud due to tide fall with insufficient under keel clearance Completed |
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Calculations are performed to solve problems of simple box-shaped and standard hull forms involving change in trim due to flooding end compartments Completed |
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Perform rudder calculations
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Types of rudders in use on ships are outlined Completed |
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Reasons for using balanced rudders are identified Completed |
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Application of force acting normal to a rudder surface (Fn), its components and the influence of Propeller Race Effect is explained Completed |
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Rudder Centre of Effort for ahead and astern conditions is obtained to determine torque on rudder stock for conventional rudders or equivalent twisting moment (ETM) for spade rudders Completed |
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Calculations are performed involving simple and complex rudder shapes to calculate speed limitations ahead and astern for stated safety factor and material properties Completed |
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Calculations are performed involving simple and complex rudder shapes to determine rudder stock and coupling bolt diameters Completed |
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