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Q1. (a) Describe, with the aid of sketches, how the test pieces for a Class 1 pressure vessel are obtained. (6)

(b) List the tests which are carried out on the test pieces described in part (a). (4)

Q5. With reference to activated fin stabilisers, explain EACH of the following:

(a) why such units are preferred to passive tanks in large vessels; (3)

(b) why these units are preferred for passenger and fast cargo ships; (3)

(c) why partial, rather than maximum damping of ship movement in heavy weather, is advisable for reasons other than overstressing the fin stocks and activating gear. (4)