Audacious Under Construction

Project:

Naval Engineering and Sustainment

We are working across all the key sites that enable the UK’s continuous-at-sea deterrent (CASD) program, including 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, at Rolls-Royce Nuclear in Derby, where submarine reactors are manufactured, and the Atomic Weapons Establishment in Berkshire, 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, the longest-running military operation in the history of the Ministry of Defence.  

As Principal Support Provider (Nuclear), and through supporting UK MOD Defence Infrastructure Organisation and its Nuclear Technical Support Partners, our team undertakes condition surveys, design and implementation of changes to existing infrastructure at HMNB Clyde, enabling continued safe and secure operations. Our Specialist Infrastructure Technical Services team also provides systems engineering, programme management and requirements management for infrastructure to support the Submarine Delivery Agency and the incoming Dreadnought class submarine. 

We provide specialist staff to support Babcock at Rosyth and HMNB Clyde, and for BAE Systems, supporting submarine building capability at Barrow and naval shipbuilding operations.  

For BAE Systems at Barrow, our integrated team is designing and managing £1bn of upgrades to the shipyard’s civil and nuclear infrastructure including the ship lift and transfer system, the Devonshire Dock Quay nuclear prime build capabilities, the central stores, a new steam generation facility, and non-nuclear fabrication areas. 

At HMNB Devonport, Europe’s largest naval base and the only UK licensed site for refitting and fueling of nuclear-powered submarines, we are assisting Babcock International with a range of important facility upgrades to accommodate the Astute and Dreadnought boats as well as current and legacy platforms. Our work includes project management, safety case authoring, multi-disciplinary design and specialist technical and safety consultancy, sustainability, seismic assessment and asset management. 

Amentum’s maritime engineering and naval architecture expertise is deployed on projects ranging from piers, wharves, berthing and docking structures to operational Naval bases and military manufacturing and assembly facilities.  

For the UK’s naval shipbuilding program, our assignments include the full suite of portfolio program and project management, naval architecture, detailed design work, mechanical engineering/power and propulsion, electrical and EC&I, systems engineering, requirements and acceptance, combat system integration, configuration management and product lifecycle management. Our extensive technical capabilities cover stress and vulnerability, data marking and data transfer, seismic design and analysis, quay structures, floating docks, ship lifts, berths, jetties and dock gates. 

Our work on the rebuild of home berths for the Royal Navy’s new aircraft carriers received a Sanctuary Award, the MOD’s highest sustainability accolade. Before work began, our team carried out a study to determine whether the jetties, which were an assortment of numerous legacy jetty modifications and extensions, needed a complete rebuild or a local rebuild plus repair and maintenance. We recommended the latter, more sustainable approach after finding that parts of the jetties, although between 40 and 100 years old, were in good condition. 

Other sustainable features of the design included the use of pre-cast units, which reduced the number of heavy goods vehicles deliveries; cathodic protection, which cuts down on below-deck maintenance; and telemetry systems for remote monitoring of the navigational aids. 

We also helped deliver vital infrastructure upgrades to the Northern Ammunition Jetty in Glen Mallan in Scotland, including new navigational aids to ensure safe passage through the confined waterway in Loch Long, two new modular fender spacer units that move with the tide to prevent the aircraft carrier flight deck from coming into contact with the jetty, and new dolphin mooring points for secure berthing of vessels. 

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