General Dynamics Electric Boat Corp., Groton, Connecticut, is awarded a not-to-exceed $188,000,000 undefinitized contract action modification to previously awarded contract N00024-17-C-2100 for Construction Spares associated with the Virginia Class Block V submarines. Work will be performed in Sunnyvale, California (36%); South Yorkshire, United Kingdom (7%); Westfield, Massachusetts (6%); Staffordshire, United Kingdom (4%); McKeesport, Pennsylvania (3%); Manchester, New Hampshire (3%); Tacoma, Washington (3%); Newport News, Virginia (2%); Warren, Massachusetts (2%); Farmingdale, New York (2%); El Cajon, California (2%); Tucson, Arizona (1%); Chesapeake, Virginia (1%); Tampa, Florida (1%), Portsmouth, New Hampshire (1%); and other locations less than 1% (26%), and is expected to be completed by September 2035. Fiscal 2024 shipbuilding and conversion (Navy) funding in the amount of $188,000,000 will be obligated at time of award and will not expire at the end of the current fiscal year. The statutory authority for this sole source award is in accordance with Federal Acquisition Regulation 6.302-1(a)(2)(iii)-only one responsible source and no other supplies or services will satisfy agency requirements. Naval Sea Systems Command, Washington, D.C., is the contracting activity.