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Q9. A vessel of 9250 tonne displacement is fitted with a propeller of 6.0 m diameter and pitch ratio 0.85.

During a fuel consumption trial of 8 hours duration, a steady shaft speed of 1.75 rev/sec was maintained and 9.76 tonne of fuel was consumed.

The following results were also recorded:

real slip ratio = 0.33

Taylor wake fraction = 0.31

shaft power = 5950 kW

transmission losses = 3%

quasi-propulsive coefficient (QPC) = 0.71

propeller thrust = 645 kN

Calculate EACH of the following:

(a) the speed of the ship;

(b) the apparent slip ratio;

(c) the propeller efficiency;

(d) the thrust deduction fraction;

(e) the fuel coefficient;

(f) the specific fuel consumption.