Ohio-class

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Ohio-class submarines are the only operational ballistic missile submarines (SSBN) in the U.S. Navy. Four, including the lead ship, USS Ohio (SSGN-726), have been converted to SSGN's, or submarines that can launch a large number of cruise missiles and also be the mother ship for naval special operations forces, typically United States Navy SEALs.

SSBN

Builder: General Dynamics Electric Boat Division.
Date Deployed: Nov. 11, 1981 (USS Ohio)
Propulsion: One nuclear reactor, one shaft.
Length: 560 feet (170.69 meters).
Beam: 42 feet (12.8 meters).
Displacement: 16,764 tons (17,033.03 metric tons) surfaced; 18,750 tons (19,000.1 metric tons) submerged.
Speed: 20+ knots (23+ miles per hour, 36.8+ kph).
Crew: 15 Officers, 140 Enlisted.
Armament: 24 tubes for Trident II submarine-launched ballistic missiles, MK48 torpedoes, four torpedo tubes.