The basic requirement for any marine engine is to propel a ship or to generate power onboard by using the energy obtained from burning of fuel oil. HFO or heavy fuel oil is the most widely used type of fuels for commercial vessels.
The fuel oil releases energy to rotate the ship propeller or the alternator by burning fuel inside the combustion chamber of the engine or to generate steam inside the boiler.
The amount of heat energy thus released is the specific energy of a fuel and is measured in...