SSN 790
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The South Dakota (SSN 790) is the 17th Virginia-class attack submarine and the third United States Navy ship named for the state of South Dakota. The contract to build her was awarded to General Dynamics Electric Boat division on December 22, 2008, and the construction began in March 2013.

April 4, 2016 The keel for the future USS South Dakota was laid down during a ceremony at GDEB’s Quonset Point facility in North Kingstown, R.I.

October 14, 2017 The Pre-Commissioning Unit (PCU) South Dakota was christened during a 10 a.m. EDT ceremony at the Electric Boat shipyard's assembly bay in Groton, Conn. Mrs. Deanie Dempsey, wife of the 18th Chairman of the Joint Chiefs of Staff, Gen. Martin E. Dempsey (Army), served as sponsor of the ship. Cmdr. Ronald L. Withrow, Jr., is the prospective commanding officer.

August 28, 2018 PCU South Dakota returned to Electric Boat shipyard after underway for the first time to conduct Alpha sea trials; Underway again from Aug. 30- Sept. ?.

September 24, General Dynamic's Electric Boat officialy delivered the future USS South Dakota to U.S. Navy.

November 2, Cmdr. Craig E. Litty relieved Cmdr. Ronald L. Withrow, Jr., as CO of the South Dakota, during a change-of-command ceremony at Dealey Center theater on Naval Submarine Base New London.

From December 15-17, the South Dakota conducted acoustic trials off the coast of Port Everglades, Florida; Returned to Groton on Dec. 20; Underway again on Jan. 9.

January 26, 2019 PCU South Dakota moored at Pier 6N on Naval Submarine Base New London in preparation for its commissioning ceremony.

February 2, USS South Dakota was commissioned during an 11 a.m. EDT ceremony at NSB New London in Groton, Connecticut.

February 5, SSN 790 recently departed homeport in support of the USS Abraham Lincoln (CVN 72) CSG's COMPTUEX; Moored at Wharf D2 in Naval Station Mayport, Fla., from Feb. 8-14; Returned to Groton on Feb. 2?.

February 27, General Dynamics Electric Boat Corp. was awarded an $18,2 million modification to a previously awarded contract (N00024-09-C-2104) for planning and execution of USS South Dakota's Post Shakedown Availability (PSA). Work is expected to be completed by December 2020; An adittional $76,2 million, $60 million and $55,1 million contracts were awarded on March 4.

March 5, USS South Dakota moved from Naval Submarine Base New London to Electric Boat shipyard.