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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.
Type XXI submarines were a class of German diesel–electric Elektroboot (German: "electric boat") submarines designed during the Second World War. One hundred and eighteen were completed, with four being combat-ready. During the war only two were put into active service and went on patrols, but these were not used in combat.
World War II USS Pampanito (SS-383) 38 8-1/8 diesel engines. From the Muskegon, Michigan, Silversides Submarine Museum. USS Silversides (SS-236). Fairbanks Morse & Co. 38 8-1/8 diesel engine. Historically, the opposed-piston engine was used in U.S. diesel-electric submarines of World War II and the 1950s. [5]
The Balao class was a design of United States Navy submarine used during World War II, and with 120 [1] boats completed, the largest class of submarines in the United States Navy. An improvement on the earlier Gato class , the boats had slight internal differences.
The Type VII was based on earlier German submarine designs going back to the World War I Type UB III and especially the cancelled Type UG. The type UG was designed through the Dutch dummy company NV Ingenieurskantoor voor Scheepsbouw Den Haag (I.v.S) to circumvent the limitations of the Treaty of Versailles, and was built by foreign shipyards.
The U.S. Navy experimented constantly with this concept in the post-World War I years, producing a series of submarines with less than stellar qualities and reliability, the AA-1 class (also known as the T class) and the V-boats, of which V-1 through V-3 were an unsuccessful attempt to produce a fleet submarine.
The Royal Navy's T class (or Triton class) of diesel-electric submarines was designed in the 1930s to replace the O, P, and R classes. Fifty-three members of the class were built just before and during the Second World War, where they played a major role in the Royal Navy's submarine operations.
United States torpedo production during World War II. The U.S. Navy has a long history of torpedo supply problems. In 1907, the Navy knew there was a problem with torpedo supply; a major contractor, the E. W. Bliss Company, could produce only 250 torpedoes per year. [20]