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List submarines of the United States Navy, by hull number and boat name Hull number Name Notes Turtle: World's first combat submersible. Deployed in 1775. Failed mission to destroy HMS Eagle. Continental Army project. Alligator: Experimental submarine built in 1862. Foundered in bad weather in 1863. First submarine of the United States Navy.
Prototype "fleet submarines"—submarines fast enough (21 knots (11 m/s)) to travel with battleships. Twice the size of any concurrent or past U.S. submarine. A poor tandem engine design caused the boats to be decommissioned by 1923 and scrapped in 1930.
In 1920 the U.S. Navy Department established a standard Type and Class letter designation system. "SS" was established as the two-letter class designation for Submarine (first line). In addition to a name, each U.S. submarine carries a Class designation followed by an assigned hull number.
Nuclear submarines of the United States Navy (15 C, 206 P) R. Research submarines of the United States (11 P) S. Ships sunk by American submarines (1 C, 188 P)
Pages in category "World War II submarines of the United States" The following 200 pages are in this category, out of approximately 336 total. This list may not reflect recent changes .
USS Ohio (SSBN-726/SSGN-726), the lead boat of her class of nuclear-powered fleet ballistic missile submarines (SSBN), is the fourth vessel of the United States Navy to be named for the U.S. state of Ohio. She was commissioned with the hull designation of SSBN-726, and with her conversion to a guided missile submarine she was re-designated SSGN ...
A fleet of 29 submarines was to be built over a ten-year period, but that was reduced to 12 submarines. The end of the Cold War and budget constraints led to the cancellation of any further additions to the fleet in 1995, leaving the Seawolf class limited to just three boats.
While the US Navy had two older classes of submarines at that time (the O and R classes originally commissioned in 1918 and 1919), the S-class was the oldest class of submarine (possibly in the world) to be used in combat operations. During World War II, 37 S-boats were in service when the United States entered the war in December 1941.