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Q8. A. Sketch and describe TWO methods that employ manometric means for measuring tank contents. B. State what corrections are made to the readings obtained by the methods described in (A) in order to gauge the mass contents? C. Explain how bunkering requirements may be estimated when no records of main engine fuel consumption are available on board.

Q2. Sketch a high lift safety valve and seat detailing their special features; Describe how such a valve is overhauled and any clearance that should be measured and noted.

Q9. With reference to fatigue of engineering components:

A. Explain the influence of stress level at cyclical frequency on expected operating life.

B. Explain the influence of material defects on the safe operating life of engineering component.

C. State the factors which influence the possibility of fatigue cracking of an auxiliary boiler feed water pump shaft and explain how the risk of such cracking can be minimized.