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Q6. A. Explain how to distinguish between list and loll and describe how to return the ship to the upright in each case. (6)

B. A propeller has a pitch ratio of 0.95. When turning at 120 rev/min the real slip is 30%, the wake fraction 0.28 and the ship speed 16 knots. The thrust is found to be 400 KN, the torque 270 KN-m and the QPC 0.67. Calculate: (10)

i. The propeller diameter.

ii. The shaft power.

iii the propeller efficiency.

iv. The thrust deduction factor.