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Defence & space
Defence & spaceNaval shipbuilding - Ballistic Missile Submarine (SSBN)

Dreadnought class submarine programme

Barrow-in-Furness, England · 2016 (first steel cut) - early 2030s (first in class expected to enter service) · £31 billion (2016 prices) for the programme; £10.12 billion (2024 prices) lifetime cost of the programme

The judgement call

Account-gated at launch

Official announcement in 2016 to name the first of class Dreadnought, and the class as Dreadnought class. - Contract awarded to Cammell Laird to manufacture 29 non-pressure hull sections. - Programme remains on track despite concerns about delays from Astute-class submarine construction.

Key engineering challenges

Maintaining continuous at-sea deterrent (CASD) by replacing the Vanguard class submarines. - Design and development of four new ballistic missile submarines. - Construction of 16 "units" later grouped into 3 "mega units" for assembly. - Potential delays due to extensions of the Barrow facility and Rolls-Royce factory for nuclear reactors.

Project facts

Client / owner
Royal Navy
Lead contractor
BAE Systems Maritime – Submarines
Lead designers
Project type
new build
Scale
Displacement: 17,200 tonnes (surfaced); Length: 153.6 m; Crew: 130
Disciplines
Naval architecture; nuclear engineering; marine engineering; systems engineering; ballistic missile systems integration
Standards & frameworks

Sources: Wikipedia: Dreadnought-class submarine (https://en.wikipedia.org/wiki/Dreadnought-class_submarine) - Dreadnought Alliance: Programme (https://dreadnoughtalliance.co.uk/programme/)