The service branch awarded the modification as part of the Navy and the U.K.’s joint Common Missile Compartment program, the Defense Department said Thursday.
The Pentagon issued a Milestone B approval to the potential $125 billion Columbia-class submarine program in January.
The Naval Sea Systems Command will obligate the full amount of the modification from the service branch’s fiscal year 2017 shipbuilding and conversion, research, development, test and evaluation funds as well as U.K. foreign military sales funds.
Work will occur in Connecticut, Maine, Rhode Island and Virginia through October 2017.