General Dynamics (GD) Electric Boat has received a $321.7m contract option from the US Navy to deliver planning yard work, engineering, and technical support for nuclear submarines.
If all options are exercised and funded, this contract could be worth approximately $1.5bn over five years.
As part of this development, Electric Boat will be responsible for providing design, engineering, material and logistics support, as well as research and development activities for active US submarines and submersibles.
In addition, the company will offer information services, planning, scheduling and technical support for submarine maintenance and modernisation activities.
Training, facility, and affordability / cost-reduction support will also be covered under the contract.
Work will be carried out by Electric Boat's engineering and design organisation, which includes more than 4,400 employees.
According to GD, its employees will work on all aspects of the submarine lifecycle, which will cover concept formulation, design, construction, maintenance, modernisation, as well as inactivation and disposal.
The US Navy previously awarded a $234m contract to Electric Boat to provide planning yard work, engineering and technical support for nuclear submarines.
The contract covered the delivery of drawings and related technical data, design change documentation, logistics technical data, configuration management, as well as a hull, mechanical and electrical engineering and submarine safety design review, among others.