The U.S Navy has awarded General Dynamics Electric Boat a $61.7 million contract modification for the continued development of the Common Missile Compartment for the United Kingdom's Successor ballistic-missile submarine and the U.S. Ohio replacement submarine. Under the modification, Electric Boat will procure, manufacture and test prototype material and equipment to be used in the production of the Common Missile Compartment. The award modifies a 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 for the Royal Navy and the U.S. Navy. If all options are exercised and funded, the overall contract would have a value of more than $776 million.