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A double acting engine is an engine where steam is applied to both sides of the piston. Earlier steam engines applied steam in only one direction, allowing momentum or gravity to return the piston to its starting place, but a double acting engine uses steam to force the piston in both directions, thus increasing rotational speed and power. [50]
The compound engine, where steam was expanded twice in two separate cylinders, still had inefficiencies. The solution was the triple expansion engine, in which steam was successively expanded in a high pressure, intermediate pressure and a low pressure cylinder. [27]: 89 [28]: 106-111
Ships powered by a triple expansion steam engine ... Ships with water-tube boilers (2 C) Steam barges (9 P) Steam frigates (1 C, 24 P) Steam turbine-powered ships (1 ...
Screw-driven steamships generally carry the ship prefix "SS" before their names, meaning 'Steam Ship' (or 'Screw Steamer' i.e. 'screw-driven steamship', or 'Screw Schooner' during the 1870s and 1880s, when sail was also carried), paddle steamers usually carry the prefix "PS" and steamships powered by steam turbine may be prefixed "TS" (turbine ship).
Pages in category "Ships powered by a triple expansion steam engine" The following 29 pages are in this category, out of 29 total. This list may not reflect recent changes .
Marine steam engines (5 P) S. ... Ships with water-tube boilers (2 C) Pages in category "Marine steam propulsion" The following 11 pages are in this category, out of ...
Star of the South was propelled by a coal-fired steam engine built by the Franklin Works of J. T. Sutton & Company. The engine was unusual for its day. It had two cylinders which were 52 inches (1.3 m) in diameter and had a 3 feet (0.91 m) stroke. A gearbox turned the single propeller shaft at twice the speed of the engine.
A screw steamer or screw steamship (abbreviated "SS") is an old term for a steamship or steamboat powered by a steam engine, using one or more propellers (also known as screws) to propel it through the water. Such a ship was also known as an "iron screw steam ship".