A six-cylinder, four stroke cycle marine oil engine has cylinder diameters of 610 mm and a piston stroke of 1250 mm. When the engine speed is 120 rpm it uses 340 kg of fuel oil of calorific value 44.2 MJ / kg in one hour. The cooling water amounts to 19200 kg / h, entering at 150C and leaving at 630C. The torque transmitted at the engine couplings is 108 kN-m and the indicated mean effective pressure is 775 kPa. Determine
a) the ip, b) the bp, c) the mechanical efficiency, d) bmep and e) brake thermal efficiency