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submarine chaser
A submarine chaser is a small and fast naval vessel, specifically intended for anti-submarine warfare. Although similar vessels were designed and used by many nations, this designation was most famously used by ships built by the US. Many of the US World War I sub-chasers found their way to friendly powers by way of Lend-Lease in World War II.
==Submarine chaser variants==
U.S. Navy submarine chasers were designed specifically to destroy German submarines in World War I, and Japanese and German submarines in World War II. The small SC-1-class submarine chasers of the design used in World War I carried the hull designator SC (for Submarine Chaser).〔Gardiner, pp. 132-133〕 Their main weapon was the depth charge. They also carried machine guns and anti-aircraft guns. The similar-sized SC-497-class was built for World War II. Also in World War II, larger PC-461-class submarine chasers used the PC hull classification symbol (for Patrol, Coastal).〔Gardiner and Chesneau, pp. 71, 152-154〕
In early 1915, the British Admiralty selected the US Elco company for the production of 50 Motor Launches for anti-submarine work, British industry being at maximum capacity. This order was eventually increased by a further 530. The whole order was completed by November 1916, and the vessels entered Royal Navy service. The vessels were in length and capable of . They were armed with a 3-pounder gun, towed paravanes to attack submarines and, later, depth charges.〔Gardiner, p. 101〕 Additional motor launches of the Fairmile A and B and other classes were built for World War II.〔Gardiner and Chesneau, p. 71〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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