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Q7. The values of effective power (naked hull) given in Table Q7 refer to a ship which is to have a service speed of 17.75 knots.

The following data also apply:

appendage allowance = 8%

weather allowance = 15%

quasi propulsive coefficient = 0.7

transmission losses = 3%

engine mechanical efficiency = 85%

ratio of service indicated power to maximum indicated power = 0.9

(a) Determine the indicated power of the engine to be installed.  (8)

(b) Determine the speed obtained if all the available power of the engine is used in EACH of the following:

(i) when the ship is running on acceptance trial in calm conditions; (4)

(ii) when operating under actual service conditions. (4)