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Q1. With reference to membrane tanks for the carriage of liquefied gas at very low temperatures. A. Describe with a sketch one method of building up the insulation; B. State which alloy is used for the membrane and the reason; C. Describe with the aid of a sketch, how the tanks are located and supported. i) Longitudinally; ii) Transversely

Q1. Describe the relationship between frictional resistance and

(a) Ship’s speed;

(b) the wetted area;

(c) surface roughness;

(d) The length of the vessel.