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Q2. a) State the advantages of using steam turbine propulsion power for vessels carrying L.N.G. cargo. (6)

b) With regard to the use of L.N.G. cargo as boiler fuel explain:

(i) The safety precautions relating to the gas pipeline supplying the boiler and burning the gas in the boiler. (5)

(ii) The means of getting rid of “excess gases” during loading or discharge. (5)

Q2. With reference to the carriage and pumping of liquefied gas cargo:

A. Sketch a suitable pumping system labelling the component parts;

B. State;

i) Why submerged hydraulically driven pumps are not used;

ii) How overheating of pump drive shaft bearings is avoided;

C. State, how the risk of fire and explosion in cargo tanks is obviated both in the loaded and discharged condition.