General Dynamics (GD) Electric Boat has received a modification contract from the US Navy to continue to support the common missile compartment programme, currently under development for the US Ohio-class replacement submarine and the UK’s successor ballistic-missile submarine.

Under the $15m modification contract, Electric Boat will continue procurement of long-lead-time material for the common missile compartment’s integrated missile-tube and hull.

Electric Boat had received five-year $1.85bn contract in December 2012 to perform research and development work for the navy’s next-generation ballistic-missile submarine, which is scheduled to begin construction in 2021. The overall contract has a potential value of $2.3bn.

Armed with Lockheed Martin-built Trident missile, the Ohio-class submarines feature Northrop Grumman’s advanced SEAL delivery system (ASDS) and four 533mm torpedo tubes with an mk118 digital fire control system.

"The overall contract has a potential value of $2.3bn."

The 16,600t Ohio-class submarines can cruise at a speed of over 25k, using a 325hp Magnatek auxiliary propeller motor, and are also integrated with an AN/BQQ-10(V4) sonar processing system and a BPS 15A I/J-band radar.

Additional features of the submarines include a BPS 15A I/J-band radar, an IBM BQQ 6 passive search sonar, a Raytheon BQS 13, BQS 15 active and passive high-frequency sonar, a BQR 15 passive towed array and an active BQR 19 navigation sonar.

The UK Royal Navy’s four Vanguard-class nuclear-powered submarines, which are armed with four torpedo tubes and 16 Trident missiles, will be replaced by Successor nuclear-powered submarines from 2028.

The company will use technical capabilities and will work on all facets of the submarine lifecycle from concept formulation and design through construction, maintenance and modernisation, and eventually to inactivation and disposal.

Defence Technology