Ohio class

Name: Ohio. Operators: United States Navy. Preceded by: Benjamin Franklin class. Built: 1976–1997. In commission: 1981–present. Planned: 24. Completed: 18. Cancelled: 6. Active: 18. Displacement: 16,764 tonnes (16,499 long tons) surfaced. 18,750 tonnes (18,450 long tons) submerged. Length: 560 ft (170 m). Propulsion: 1× S8G PWR nuclear reactor. 2× geared turbines; 60,000 shp (45 MW) Fairbanks Morse auxiliary diesel. Speed: 12 knots (22 km/h; 14 mph) surfaced. 20 knots (37 km/h; 23 mph) submerged (official). 25 knots (46 km/h; 29 mph) submerged (reported). Range: Limited only by food supplies. Test depth: +800 ft (240 m). Crew: 15 officers, 140 enlisted. Armament: 4 × 21 in (53 cm) Mark 48 torpedo tubes (midships). General characteristics SSBN-726 to SSBN-733 from construction to refueling. Armament: 24 × Trident I C4 SLBM with up to 8 MIRVed 100 ktTNT W76 nuclear warheads each, range 4,000 nmi (7,400 km; 4,600 mi). General characteristics SSBN-734 and subsequent hulls upon construction, SSBN-730 to SSBN-733 since refueling. Armament: 24 × Trident II D5 SLBM with up to 12 MIRVed W76 or W88 (300–475 ktTNT) nuclear warheads each, range 6,500 nmi (12,000 km; 7,500 mi). General characteristics SSGN conversion. Armament: 22 tubes, each with 7 Tomahawk cruise missiles, totaling 154.

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