A patrol boat is powered by a water jet pump engine. The engine takes water in through a 3 ft. diameter duct in the bow and discharges it through a 1 ft. diameter duct in the stern. The drag...

A patrol boat is powered by a water jet pump engine. The engine takes water in through a 3 ft. diameter duct in the bow and discharges it through a 1 ft. diameter duct in the stern. The drag coefficient of the boat has a value of 0.1 based on a total underwater area of 1500 ft2 . Calculate the pump capacity in gpm and the engine horsepower required to achieve a speed of 35 mph, neglecting friction in the pump and ducts.