The USS Seawolf Attack Submarine is a nuclear-powered attack submarine. The first of its class, the Seawolf (SSN-21) was ordered from the Electric Boat Division of General Dynamics in January 1989 and commissioned in July 1997.
Connecticut (SSN-22) was commissioned in December 1998. The third, Jimmy Carter (SSN-23), is to be modified to improve payload carrying and underwater manoeuvrability. The alterations to the design will include modifications to the ballast control, mission management spaces and the creation of a flexible ocean interface known as a "wasp waist", which will enable the deployment and recovery of payloads without the use of torpedo tubes. Other additions include a new high capacity communications mast and ROV handling system. The Jimmy Carter was launched in June 2004 and was scheduled for delivery by the end of 2004.
