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A marine steam engine is a steam engine that is used to power a ship or boat. This article deals mainly with marine steam engines of the reciprocating type, which were in use from the inception of the steamboat in the early 19th century to their last years of large-scale manufacture during World War II .
The first advanced mechanical means of marine propulsion was the marine steam engine, introduced in the early 19th century. During the 20th century it was replaced by two-stroke or four-stroke diesel engines , outboard motors , and gas turbine engines on faster ships.
It specialised in building the steam turbine engines that he had invented for marine use. [1] The first vessel powered by a Parsons turbine was Turbinia , launched in 1894. [ 2 ] The successful demonstration of this vessel led to the creation of the company and the building of engines for the first two turbine-powered destroyers for the Royal ...
The modern steam turbine was invented in 1884 by Charles Parsons, whose first model was connected to a dynamo that generated 7.5 kilowatts (10.1 hp) of electricity. [12] The invention of Parsons' steam turbine made cheap and plentiful electricity possible and revolutionized marine transport and naval warfare. [13] Parsons' design was a reaction ...
Parsons' steam turbine made cheap and plentiful electricity possible and revolutionised marine transport and naval warfare. [ 12 ] Another type of steam turbine at the time, invented by Gustaf de Laval (1845–1913) in the 1880s, was an impulse design that subjected the mechanism to huge centrifugal forces and so had limited output due to the ...
Land-based steam engines could simply exhaust much of their steam, as feed water was usually readily available. Prior to and during World War II, the expansion engine dominated marine applications where high vessel speed was not essential. It was superseded by the steam turbine when speed was required, such as for warships and ocean liners.
If the turbines do not drive a propeller shaft directly and instead a turbo-electric transmission is used, the system is known as COGES (combined gas turbine-electric and steam). COGAS differs from many other combined marine propulsion systems in that it is not intended to operate on one system alone.
Marine steam engines (5 P) S. Ships with fire tube boilers ... Steam generator (boiler) Steam turbine This page was last edited on 15 November 2014, at 07:28 (UTC) ...