The subsidiary will deliver long-lead-time-materials for use in the construction of the SSN 792 Virginia class submarine.
Construction will start in fiscal year 2014.
The Navy will receive steam and electric plant components, main propulsion units, ship service turbine generators and other components for the hull, mechanical and electrical systems.
The Pentagon expects delivery to finish in January 2013 and the Naval Sea Systems Command in Washington is the contracting activity.
The Groton, Conn.-based subsidiary picked up a $191 million modification in December to provide the Navy with missile design and engineering.