General Dynamics Electric Boat has received two U.S. Navy contract modifications with a combined value of $32.9 million to continue development of the Common Missile Compartment for the next-generation strategic deterrent and to support nuclear-submarine repair work. Electric Boat is a wholly owned subsidiary of General Dynamics. Under the first modification, Electric Boat will procure, manufacture and test prototype material and equipment to be used in the production of the Common Missile Compartment for the United Kingdom's Successor ballistic-missile submarine and the United States' Ohio replacement submarine. The $21 million award modifies a $76 million contract announced in December 2008 for engineering, technical services, concept studies and design of a Common Missile Compartment for the next-generation ballistic missile submarines being developed by the Royal Navy and the U.S. Navy. If all options are exercised and funded, the overall contract has a potential value of more than $692 million.