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Seawolf class Attack Submarine - SSN


seawolf class attack submarine us navy connecticut jimmy carter ssn



SSN 21 USS Seawolf (1997)

SSN 22 USS Connecticut (1998)

SSN 23 USS Jimmy Carter (2005)


Builder: General Dynamics Electric Boat, Groton, Connecticut, USA

Displacement: SSN 21, 22  9285 tons / SSN 23 = 12350 tons (submerged)

Length: SSN 21, 22  = 107,6 meters / SSN 23 = 138,1 meters

Beam: 12,2 meters

Draft: 11 meters

Speed: 30+ knots (56+ km/h), max.

Propulsion: 1 x Westinghouse S6W nuclear reactor / 45000 hp / 1 shaft / 1 low-noise pump jet

Complement: 140

Armament: 8 x 26" (660mm) torpedo tubes for up to 50 UGM-109 Tomahawk missiles, UGM-84 Harpoon SSM or Mk-48 torpedoes


The Seawolf class is a class of nuclear-powered fast attack submarines (SSN) in service with the United States Navy. The class was the intended successor to the Los Angeles class. Design work began in 1983. At one time, an intended fleet of 29 submarines was to be built over a ten-year period, later reduced to twelve submarines. The end of the Cold War and budget constraints led to the cancellation in 1995 of any further additions to the fleet, leaving the Seawolf class limited to just three boats. This, in turn, led to the design of the smaller Virginia class. The Seawolf class cost about $3 billion ($3.5 billion for USS Jimmy Carter) making it the most expensive SSN submarine and second most expensive submarine ever after the French SSBN Triomphant class.

The Seawolf design was intended to combat the threat of large numbers of advanced Soviet Navy ballistic missile submarines such as the Typhoon class and attack submarines such as the Akula class in a deep ocean environment. Seawolf class hulls are constructed from HY-100 steel, which is stronger than the HY-80 steel employed in previous classes, in order to withstand water pressure at greater depths.

Compared to previous Los Angeles-class submarines, Seawolf submarines are larger, faster, and significantly quieter; they also carry more weapons and have twice as many torpedo tubes, for a total of 8. The boats are able to carry up to 50 UGM-109 Tomahawk cruise missiles for attacking land and sea surface targets. The boats also have extensive equipment to allow for littoral, or shallow water, operations. The class uses the more advanced ARCI Modified AN/BSY-2 combat system, which includes a new, larger spherical sonar array, a wide aperture array (WAA), and a new towed-array sonar. Each boat is powered by a single S6W nuclear reactor, delivering 45,000 hp (34,000 kW) to a low-noise pump-jet.

As a result of their advanced design, however, Seawolf submarines were much more expensive. The projected cost for twelve submarines of this class was $33.6 billion, but after the Cold War ended, construction was stopped at three boats.

USS Jimmy Carter is roughly 100 feet (30 m) longer than the other two boats of her class due to the insertion of a section known as the Multi-Mission Platform (MMP), which allows launch and recovery of ROVs and United States Navy SEALs forces. The MMP may also be used as an underwater splicing chamber for tapping of undersea fiber optic cables. This role was formerly filled by the decommissioned USS Parche (SSN-683). Jimmy Carter was modified for this role by General Dynamics Electric Boat at the cost of $887 million.

source: wikipedia



ssn-21 uss seawolf class attack submarine us navy
 USS Seawolf (SSN 21)

uss seawolf ssn-21 attack submarine us navy
USS Seawolf (SSN 21)

ssn-22 uss connecticut seawolf class attack submarine us navy
USS Connecticut (SSN 22)

ssn-23 uss jimmy carter seawolf class attack submarine us navy
USS Jimmy Carter (SSN 23)

uss jimmy carter ssn-23
USS Jimmy Carter (SSN 23)

uss jimmy carter ssn-23 seawolf class
USS Jimmy Carter (SSN 23)


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