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The US Navy has a total of 18 Ohio-class submarines which consist of 14 ballistic missile submarines (SSBNs), and four cruise missile submarines (SSGNs). The SSBN submarines provide the sea-based leg of the U.S. nuclear triad. Each SSBN submarine is armed with up to 20 Trident II submarine-launched ballistic missiles (SLBM).
Fact File: Attack Submarines - SSN. United States Navy. "Fact File: Fleet Ballistic Missile Submarines - SSBN". United States Navy. "Submarine Service: Operations and Support". Royal Navy. "SSBN-726 Ohio-Class FBM Submarines". Federation of American Scientists.
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.
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There are three major types of submarines in the United States Navy: ballistic missile submarines, attack submarines, and cruise missile submarines. All submarines currently in the U.S. Navy are nuclear-powered. Ballistic missile submarines have a single strategic mission of carrying nuclear submarine-launched ballistic missiles.
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 ...
Unique submarine; liquid metal cooled S2G reactor (replaced with a pressurized-water reactor in 1959) Skate: 4 USS Skate (SSN-578) 21 July 1955 USS Seadragon (SSN-584) 5 December 1959 Skipjack: 6 USS Skipjack (SSN-585) 29 May 1956 USS Snook (SSN-592) 24 October 1961 First nuclear submarine class with teardrop hull form.
Today, the United States Navy operates four different classes of submarine: the Los Angeles, Ohio, Seawolf and Virginia-classes. The United States has a total of 70 submarines on active duty as of 2018. All are nuclear-powered. There are 18 Ohio class, 14 Virginia class, 3 Seawolf class and 35 Los Angeles class.