Fairbanks Morse FM 175D engine

The Fairbanks Morse FM 175D is a high-speed four-stroke marine diesel engine with an advanced electronic common rail fuel injection system, sold by Fairbanks Morse Defense in 12, 16 and 20 cylinder V arrangements under licence from Everllence, formerly MAN Energy Solutions, whose own earlier name for it was the MAN 175D. The bore is 175 millimetres and the stroke 215 millimetres, displacing 5.17 litres per cylinder, and the maker lists a power range of 1,740 to 4,440 kilowatts, with propulsion ratings at 1,800 to 2,000 revolutions a minute and generator ratings at 1,800 revolutions a minute for 60 hertz. The maker describes a compact design with engine-mounted controls, a high-efficiency turbocharger and four auxiliary power take-offs, aimed at commercial workboats, military vessels and uncrewed vessels. It runs on marine distillate grades DMA and DMZ and on the naval fuels F-75 and F-76. Everllence describes the engine as a 175 millimetre bore V type for mechanical or electric propulsion and onboard power generation.