An electrical generator driven by the main engine through the propeller shaft, used to produce electrical power while the vessel is at sea. Shaft generators improve fuel efficiency by using the main engine's surplus power instead of running auxiliary diesel generators, reducing overall fuel consumption and emissions.
Category: Marine Engineering
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Four-Stroke EngineA type of internal combustion engine that completes a power cycle in four strokes of the piston (two revolutions of the crankshaft).LNG FuelLiquefied natural gas used as a marine fuel to power ship engines, offering significant reductions in sulphur oxides, nitrogen oxides, and particulate matter emissions compared to conventional heavy fuel oil.ScrubberAn exhaust gas cleaning system (EGCS) installed on ships to remove sulphur oxides (SOx) and particulate matter from engine exhaust gases, enabling the use of high-sulphur fuel oil while meeting MARPOL Annex VI emission limits.Stern TubeA watertight tube through which the propeller shaft exits the hull at the stern of the vessel.Two-Stroke EngineA type of internal combustion engine that completes a power cycle in two strokes of the piston (one revolution of the crankshaft).Waste Heat RecoveryA system that captures thermal energy from the main engine's exhaust gases and cooling water to generate additional electrical power or steam.
Back to DictionaryEntry updated May 2026