OREANDA-NEWS. The U.S Navy has awarded General Dynamics Electric Boat a $23.6 million contract modification to continue development of the U.S. Navy's Ohio Replacement submarine. Electric Boat is a wholly owned subsidiary of General Dynamics (NYSE: GD).

Under the terms of the modification, Electric Boat will perform air conditioning unit detail design, prototype unit manufacture and technical manual development.

Initially awarded in December 2012, the five-year $1.85 billion contract calls for Electric Boat to perform research and development work for the Navy's next-generation ballistic-missile submarine, which is scheduled to begin construction in 2021. The potential value of the overall contract is $2.5 billion.