A guided missile destroyer of length 163 m, breadth 17 m and full load draught 7 m has a displacement of 7700 t and a wetted surface of 3013 m2. A model to a scale of 26.08 is made of the ship and a resistance test carried out. The model has a resistance of 147.9 N at a speed of 3.022 m per sec. Determine the effective power of the ship at the corresponding speed using the Froude method. (1 pound force = 4.4482 N)