Page "Diesel engine" Paragraph 97

Also known as slow-speed, or traditionally oil engines, the largest diesel engines are primarily used to power ships, although there are a few land-based power generation units as well.

These extremely large two-stroke engines have power outputs up to approximately, operate in the range from approximately 60 to 200 rpm and are up to tall, and can weigh over.

They typically use direct injection running on cheap low-grade heavy fuel, also known as Bunker C fuel, which requires heating in the ship for tanking and before injection due to the fuel's high viscosity.

Often, the waste heat recovery steam boilers attached to the engine exhaust ducting generate the needed to heat required for fuel heating.

Provided the heavy fuel system is kept warm and circulating, engines can be started and stopped on heavy fuel.