List of Sturgeon-class submarines



Named after the lead boat, the Sturgeon class of nuclear-powered fast attack submarines (SSN) served with the United States Navy from the late 1960s to the mid-2000s. With a submerged displacement of 4,780 tons, its successors were the 6,920-ton Los Angeles-class submarine, the first of which was commissioned in 1976. The Sturgeon class was designed with digital combat systems and more quieting features than its predecessor, the Thresher/Permit-class submarine. As SSNs, Sturgeon-class submarines were designed to primarily perform anti-submarine warfare operations. Seven different primary contractors constructed the 37 boats of the class, making it the second-most numerous nuclear-powered warship class in the world after the 62-boat Los Angeles class.

In the late 1950s, the U.S. Navy identified the need to reengineer the Thresher/Permit class, the boats of which were then being constructed. In pursuit of high-speed operations, many design aspects were sacrificed. To address such deficiences, the Sturgeon class was created. This class differed from its predecessor by having an enlarged and relocated sail to accommodate additional external sensors; a second periscope was also added. Additionally, the fairwater planes on the sail could be rotated 90 degrees to allow breaking through relatively thin ice. The hull was lengthened from about 278 ft to about 292 ft; this, coupled with the larger sail, reduced the class's speed by 2 kn compared to the Thresher/Permit class. Internally, the class's layout was rearranged to improve habitability and to admit more weapons as compared to its predecessor. The class was further redesigned with SUBSAFE program rules following the loss of USS Thresher (SSN-593) in April 1963. Among the range of armaments used by the class were the Mark 48 torpedo, the Harpoon anti-ship missile, the Tomahawk cruise missile, and the SUBROC nuclear anti-submarine missile.

Starting with USS Archerfish (SSN-678), the hull was lengthened by 10 ft (3 m) to allow a larger living and working space compared to previous boats of the class. Nine boats incorporated this extension. Other modifications included the addition of a Dry Deck Shelter (an external lockout chamber capable of accommodating SEAL Delivery Vehicles) to six boats to enable covert insertion and extraction of U.S. Navy SEALs.

Boats
In October 1961, General Dynamics Electric Boat was awarded the contract to construct the lead boat of the class, USS Sturgeon (SSN-637). Laid down in August 1963, the boat was launched in February 1966 before being commissioned in March 1966. Electric Boat would be the largest builder of the class, responsible for twelve boats in total. It was followed by Newport News Shipbuilding (with nine boats), Ingalls Shipbuilding (seven boats), San Francisco Naval Shipyard/Mare Island Naval Shipyard (five boats), General Dynamics Quincy Shipbuilding Division and Portsmouth Naval Shipyard (two boats each). The final boat of the class, USS Richard B. Russell (SSN-687), was commissioned in August 1975.

USS Glenard P. Lipscomb (SSN-685) was a significant modification of the Sturgeon design for an experimental propulsion system, and so was a one-ship class. USS Narwhal (SSN-671) was also identified as such during her construction, but later was admitted to have been a unique design with very little in common with the Sturgeon class

Originally designed for 20-year operational lives, boats of the Sturgeon class had this lengthened to 30 years, with a further planned three-year extension. However, many boats were retired prior to the limit to avoid costly nuclear refueling. The first to be decommissioned, in October 1991, was USS Sea Devil; the last, USS Parche (SSN-683), was decommissioned in July 2005. By then, the Los Angeles-, Seawolf-, and Virginia-class SSNs had entered service.


 * Keys
 * {{legend|#FF8C00|Boats in orange(†) were built by General Dynamics Electric Boat in Groton, Connecticut.}}
 * {{legend|#FFFF00|Boats in yellow(#) were built by Newport News Shipbuilding in Newport News, Virginia.}}
 * {{legend|#7CFC00|Boats in lawn green(‡) were built by Ingalls Shipbuilding in Pascagoula, Mississippi.}}
 * {{legend|#00FFFF|Boats in aqua were built by San Francisco Naval Shipyard/Mare Island Naval Shipyard in Vallejo, California.}}
 * {{legend|#F4A460|Boats in sandy brown(§) were built by General Dynamics Quincy Shipbuilding Division in Quincy, Massachusetts.}}
 * {{legend|#FF0000|Boats in red were built by Portsmouth Naval Shipyard in Kittery, Maine.}}