A 1/30 model of a ship with 900 m 2 wetted area, towed in water at 2 m/s, experiences a resistance of 20 N. Calculate, (i) the corresponding speed of the ship, (ii) the wave making drag on the ship,...

A 1/30 model of a ship with 900 m²
wetted area, towed in water at 2 m/s, experiences a resistance of 20 N. Calculate, (i) the corresponding speed of the ship, (ii) the wave making drag on the ship, (iii) the skin-friction drag if the skin-drag coefficient for the model is 0.004 and for the prototype 0.015, (iv) the total drag on the ship, and (v) the power to propel the ship.