General Dynamics to modernize US Navy USS Hartford SSN 768 nuclear-powered submarine.

According to a contract published by the United States Department of Defense on June 4, 2021, General Dynamics Electric Boat Corp., Groton, Connecticut, is awarded a $63,805,144 cost-plus-fixed-fee, cost-plus-incentive-fee modification to a previously awarded contract for smart start maintenance, repair, and modernization efforts in support of U.S. Navy USS Hartford (SSN 768) nuclear-powered submarine engineered overhaul.
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The U.S. Navy Los Angeles fast attack submarine USS Hartford (SSN 768) is guided out of the floating dry dock, ARDM 4 on Thursday, Sept. 17, 2020, at Submarine Base New London in Groton. (Picture source U.S. Navy)

The USS Hartford (SSN-768) is a Los Angeles-class submarine in service with the U.S. Navy. She was launched on 4 December 1993 and commissioned on 10 December 1994. in 2009, a repair contract was awarded to General Dynamics. Repairs were initially expected to cost $37.4 million and be completed by January 2010. However, as of November 2009, repair costs had already exceeded $100 million. The final repair cost was $120 million when Hartford returned to duty in February 2011. 

The Los Angeles-class, sometimes called the LA-class or the 688-class, is a class of nuclear-powered fast attack submarines that forms the backbone of the U.S. Navy's submarine force. Sixty-two submarines of this class have been completed, 41 are still in active service.

The Los Angeles class contains more nuclear submarines than any other class in the world. The class was preceded by the Sturgeon class and followed by the Seawolf. Except for USS Hyman G. Rickover (SSN 709), all submarines of this class are named after American cities and a few towns (e.g. Key West, Florida, and Greeneville, Tennessee). This system of naming broke the Navy’s long-standing tradition of naming attack submarines for creatures of the ocean (e.g. USS Nautilus (SSN 571).