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A twin-screw steamer (or steamship) (TSS) is a steam-powered vessel propelled by two screw propellers, one on either side of the plane of the keel. [1] Arrangement
The picket boat of the Royal Navy, (also sometimes called a P1000) was a twin screw boat in use at Britannia Royal Naval College in Dartmouth primarily to train officer cadets in boat handling and seamanship.
Steam-powered ships were named with a prefix designating their propeller configuration i.e. single, twin, triple-screw. Single-screw Steamship SS, Twin-Screw Steamship TSS, Triple-Screw Steamship TrSS. Steam turbine-driven ships had the prefix TS. In the UK the prefix RMS for Royal Mail Steamship overruled the screw configuration prefix. [11]
The Yorktown-class ships were powered by two triple-expansion steam engines which each drove one of the pair of 10.5-foot (3.2 m), three-bladed screw propellers. The cylinders of each engine were 22, 31, and 51 inches (56, 79, and 130 cm) in diameter and had a 30-inch (76 cm) stroke . [ 2 ]
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".
TSS Earnslaw is a 1912 Edwardian twin screw steamer based at Lake Wakatipu in New Zealand. She is one of the oldest tourist attractions in Central Otago , and the only remaining commercial passenger-carrying coal-fired steamship in the southern hemisphere.
She seemed to suffer from vibration problems, and the twin-screw design of the stern causing steering and handling problems. She was further damaged by a fire on 21 November 1907 while in drydock. In 1913, she had a considerable refit which resolved many of her mechanical problems.
TSS Arahura was a twin screw steam passenger/cargo ship (also schooner rigged) built for the Union Steam Ship Company. It was launched on the Clyde on 25 March 1905 and built by William Denny and Brothers Dumbarton at a cost of £52,000. [1] [2] It had a gross weight of 1,607 tons. [3] The ship had accommodation for 201 passengers.