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Q7. The results in Table Q7 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 density 1000 kg/m³ at a temperature of 13^o C.

The following particulars are also available:

Ship correlation factor  1.18 ; Temperature correction

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

Note:

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

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

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