General Dynamics (GD) Electric Boat has secured a contract modification worth $23.6m from the US Navy to continue its service in developing the US Navy's Ohio Replacement submarine.
Under the modified contract, Electric Boat, a wholly owned subsidiary of GD, will carry out a detailed design of the air conditioning unit, including prototype unit manufacture and technical manual development on the submarine.
The Ohio Replacement Submarine is a futuristic US Navy nuclear submarine, which is being designed to replace the existing fleet of Trident missile-armed Ohio-class ballistic missile submarines.
Integrated with Lockheed Martin-built Trident missiles, the Ohio-class submarines include Northrop Grumman's advanced SEAL delivery system (ASDS) and four 533mm torpedo tubes, with an Mk118 digital fire-control system.
The 16,600t submarines offer a maximum cruising speed of over 25k via a 325hp Magnatek auxiliary propeller motor, and are also equipped with an AN/BQQ-10 (V4) sonar processing system and BPS 15A I / J-band radar.
A $1.85bn contract, spanning for a period of five years, was initially awarded to GD in December 2012.
Under the contract, Electric Boat was supposed to undertake the research and development work for the navy's next-generation ballistic-missile submarine, which is scheduled to begin construction in 2021 and is expected to be commissioned in 2031.
The overall value of the contract is estimated to be $2.5bn.
Last month, GD was awarded a contract modification of $89.8m to develop the Common Missile Compartment for the Ohio Replacement submarine and the UK Royal Navy's Successor-class ballistic-missile submarine.
Image: An artist's impression of the Ohio Replacement Submarine. Photo: courtesy of Captain William J Brougham, USN - Programme Director, OHIO Replacement Program - NAVSEA.