General Dynamics Electric Boat, Groton, Connecticut, is awarded a $10,912,499 undefinitized contract action to previously awarded contract N00024-20-C-2120 to perform component, software and system preliminary design. Work will be performed in Cambridge, Massachusetts, and is expected to be completed by December 2023. Fiscal 2023 research, development, test and evaluation funds totaling $3,500,000 will be obligated at the time of authorization and will not expire at the end of the current fiscal year. This contract was not competitively procured. 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. The Supervisor of Shipbuilding Conversion and Repair, Groton, Connecticut, is the contracting activity.