The U.S. Navy has awarded General Dynamics Electric Boat, or GDEB, a $15.38 billion contract modification to support continued work on the Columbia-class ballistic missile submarine program.
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What Does the Contract Modification Cover?
The Department of War said Wednesday the cost-plus-incentive-fee and cost-plus-fixed-fee modification expands the scope of an existing contract to include further design work, lead yard support and sustainment activities for Columbia-class submarines. It also incorporates integrated enterprise plan efforts and initiatives related to supplier development within the submarine industrial base. In addition, the modification supports the serial production of Columbia-class and Virginia-class submarines.
What Are the Details of the Contract?
GDEB will carry out work at its facility in Groton, Connecticut. Other work locations include Newport News, Virginia; Sunnyvale, California; Menomonee, Wisconsin; Quonset Point, Rhode Island; Fitchburg, Massachusetts; Mobile, Alabama; and Philadelphia and Bethlehem, Pennsylvania. The project is expected to be completed by June 2035.
Naval Sea Systems Command will obligate $3.07 billion from fiscal 2026 national sea-based deterrence accounts; $74 million from fiscal 2025 maritime industrial base accounts; $73.2 million from fiscal 2025 research, development, test and evaluation accounts; and $2.8 million from fiscal 2026 RDT&E accounts. Of the total amount, $3.14 billion is expected to expire at the end of the current fiscal year.
Prior Columbia-Class Submarine Contract
This latest modification builds on a previous $5 billion contract awarded to GDEB in 2017 to complete design work on the lead Columbia-class ballistic missile submarine. The contract, which will conclude in 2031, covers component and technology development, as well as the production of a missile tube module and a reactor compartment bulkhead.














