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Q7) The following values of effective power (naked hull) refer to a ship which is to have a service speed of 16.25 knots.

The following data also apply:

Appendage allowance  = 7%

Weather allowance  = 14%

Quasi propulsive coefficient  =0.71%

Transmission losses  =3%

Engine mechancial efficiency =86%

Ratio of service indicated power to installed machinery indicated power = 0.9.

Determine EACH of the following:

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

(b) the speed obtained if all the available power of the engine is used:

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

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