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The double hull of a submarine is different from a ship's double hull. The external hull, which actually forms the shape of submarine, is called the outer hull, casing or light hull. It defines the hydrodynamic performance of submarine, which affects the amount of power required to drive the vessel through the water.
The Gatos, along with nearly all of the U.S. Navy fleet-type submarines of World War II, were of partial double-hulled construction. The inner pressure-resisting hull was wrapped by an outer, hydrodynamic hull. The voids between the two hulls provided space for fuel and ballast tanks.
Submarines of World War II represented a wide range of capabilities with many types of varying specifications produced by dozens of countries. The principle countries engaged in submarine warfare during the war were Germany, Italy, Japan, the United States, United Kingdom and the Soviet Union. The Italian and Soviet fleets were the largest.
This is a list of submarines of World War II, which began with the German invasion of Poland on 1 September 1939 and ended with the surrender of Japan on 2 September 1945. Germany used submarines to devastating effect in the Battle of the Atlantic , where it attempted to cut Britain's supply routes by sinking more merchant ships than Britain ...
Destroyed by Japanese aircraft 10 Dec 1941. First US submarine lost in World War II. SS-196 Searaven: SS-197 Seawolf: Accidentally sunk by US Navy destroyer escort 3 Oct 1944. SS-198 Tambor: Lead boat of a class of 12 SS-199 Tautog: Highest scoring US submarine of World War II. SS-200 Thresher: SS-201 Triton: Sunk 15 April 1943 by Japanese ...
The I-400-class submarine (伊四百型潜水艦, I-yon-hyaku-gata sensuikan) Imperial Japanese Navy (IJN) submarines were the largest submarines of World War II, with the first one completed just a little over a month before the end of the war.
During World War II Italy also had designs for a wartime building programme. This was the Flutto class of submarines, an enlarged 600 series design for medium-range use, with mass production under wartime conditions in mind. 48 vessels, in three series (Types) were ordered, but only 12 were completed.
The Kaichū Type (海中型, Navy Medium Type) VI submarines were double-hulled, medium-sized submarines. They were derived from the preceding Kaichū V Type and had improved performance. Constructed between 1933 and 1937, they served as prototypes for the major production Kaichu VII type constructed during World War II.