Naval Deterrent Sustainment
Amentum operates on every one of the sites which are crucial to the UK’s independent nuclear deterrent.
Amentum is a key supplier to the United Kingdom’s naval nuclear propulsion program, providing research and technology services and nuclear safety and technical advice under long-term contracts. Covering existing submarine reactors and the development of future propulsion plant, our work is underpinned by comprehensive laboratory and analytical resources and world-leading capability in materials science, high integrity engineering, physics, chemistry and other disciplines; and by a team of specialists who are always on call to provide advice and safety assessments directly to submarine commanders.
We work across all the key sites that enable the UK’s continuous-at-sea deterrent (CASD) program, also known as Operation Relentless, which keeps at least one nuclear-armed ballistic missile submarine patrolling the seas undetected at all times. These sites include HMNB Clyde, home base for the Royal Navy’s operational submarines; HMNB Devonport, the largest naval base in Western Europe, BAE Systems Maritime in Barrow-in-Furness, where the Royal Navy’s submarines are built, Rolls-Royce Nuclear in Derby, where submarine reactors are manufactured, and the Atomic Weapons Establishment , which is responsible for nuclear warhead design and manufacturing.
Amentum employs more than 350 multi-disciplinary engineers and project delivery professionals supporting the submarines which deliver Operation Relentless, which began more than 60 years ago and is the longest-running operation in the history of the Ministry of Defence.
