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Submarines of the United States Navy are built in classes, using a single design for a number of boats. Minor variations occur as improvements are incorporated into the design, so later boats of a class may be more capable than earlier. Also, boats are modified, sometimes extensively, while in service, creating departures from the class standard. However, in general, all boats of a class are noticeably similar.
The Ohio class is a class of nuclear-powered submarines used by the United States Navy. The United States has 18 Ohio-class submarines:
14 nuclear-powered SSBNs, each armed with 24 Trident II SLBMs; they are also known as "Trident" submarines, and provide the sea-based leg of the nuclear triad of the United States strategic nuclear weapons arsenal
4 nuclear-powered SSGNs, each capable of carrying 154 Tomahawk cruise missiles with conventional warheads
The 14 Trident II SSBNs together carry around fifty percent of the total U.S. strategic warhead inventory. The exact number varies in an unpredictable and highly classified manner, at or below a maximum set by various strategic arms limitation treaties. Although the missiles have no pre-set targets when the submarine goes on patrol, the platform, when required, is capable of rapid targeting using secure and constant at-sea communications links. The Ohio class is the largest type of submarine ever constructed for the U.S. Navy, and are second only to the Russian Typhoon-class in displacement and size (the new Russian Borei class submarine has bigger displacement when submerged, but not when surfaced).
The Ohio-class submarines were specifically designed for extended deterrence patrols. Each submarine is complemented by two crews, Blue and Gold, with each crew operating on a 100-day interval. To decrease the time in port for crew turnover and replenishment, three large logistics hatches are fitted to provide large diameter resupply and repair openings. These hatches allow sailors to rapidly transfer supply pallets, equipment replacement modules and machinery components, significantly reducing the time required for replenishment and maintenance. The class design allows the vessel to operate for over fifteen years between overhauls. The boats are purported to be as stealthy at their cruising speed of 20 knots (37 km/h; 23 mph) as previous subs were at a dead crawl of 6 knots (11 km/h; 6.9 mph), although exact information remains classified.
General Characteristics
Type: SSBN/SSGN
Displacement:
16,764tons Surfaced
18,750tons Submerged
Length: 560 ft (170 m)
Beam: 42 ft (13 m)
Propulsion:
1xS8G PWR nuclear reactor
2x geared turbines
1x325hp auxiliary motor
1 shaft @ 60,000shp
Speed:
12 knots (14 mph) (22km/h) surfaced
+20 knots (23 mph) (37km/h) submerged (official)
25 knots (29 mph) (46km/h) submerged (actual)
Range:
unlimited except by food supplies
Test depth:
+800 ft (240 m)Official
+1,000 ft (300 m)Actual
Crew:
15 officers
140 enlisted
Armament:
4x21in bow torpedo tubes.
SSBN-726 to SSBN-733 from construction to refueling: 24 Trident I C4 SLBM with up to eight MIRVed 100kT W76 nuclear warheads, range 4,000 nmi (4,600 mi) (7,400km)
SSBN-734 and subsequent hulls upon construction, SSBN-730 to SSBN-733 since refueling: 24 Trident II D5 SLBM with up to 12 MIRVed W76 or W88 (300-475kT) nuclear warheads, range 6,500 nmi (7,500 mi) (12,000km)
SSGN conversion: 22 tubes, each with 7 Tomahawk Cruise missiles.
Additional Hints
(Decrypt)
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