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Q6. The results in Table Q5 were obtained from resistance tests on a ship model 6 m in length having a wetted surface area of 7.5 m² in fresh water of 1000 kg/m³ at a temperature of 13ºC.

The following particulars are also available:

Ship correlation factor 1.22

Temperature correction ±0.43% per ºC

Calculate the effective power of a similar ship 160 m long travelling at a speed of 17.5 knots in sea water of density 1025 kg/m³ at a temperature of 15ºC. (16)

Note: frictional coefficient for the model in water of density 1000 kg/m3 at 15ºC is 1.655.

Frictional coefficient for the ship in water of density 1025 kg/m3 at 15ºC is 1.410.

Speed in m/s with index (n) for ship and model 1.825.