Dreadnought-class submarine

Artist's rendering of Dreadnought-class submarine
Class overview
BuildersBAE Systems, Barrow-in-Furness, England
Operators Royal Navy
Preceded byVanguard class
Cost
  • £31 billion (2016)[1] lifetime cost of total programme (est.)
  • £7.75 billion (2016) per unit (est.)
BuiltFirst expected by early 2030s[2]
Planned4
Building3
Completed0
Active0
General characteristics
TypeNuclear-powered ballistic missile submarine
Displacement17,200 t (16,900 long tons; 19,000 short tons)
Length153.6 metres (504 ft)[3]
Beam12.8 m (42 ft 0 in)[citation needed]
Draught12 m (39 ft 4 in)[citation needed]
PropulsionRolls-Royce PWR3 nuclear reactor, turbo-electric drive, pump-jet
RangeLimited only by food and mechanical components
Complement130
Armament

The Dreadnought class is the future replacement for the Royal Navy's Vanguard class of ballistic missile submarines.[1] Like their predecessors they will carry Trident II D-5 missiles.[4] The Vanguard submarines entered service in the United Kingdom in the 1990s with an intended service life of 25 years.[5] Their replacement is necessary for maintaining a continuous at-sea deterrent (CASD), the principle of operation behind the Trident system.[6]

Provisionally named "Successor" (being the successor to the Vanguard class SSBNs), it was officially announced in 2016 that the first of class would be named Dreadnought, and that the class would be the Dreadnought class.[7][8] The next three boats will be called Valiant,[9] Warspite and King George VI.[10]

  1. ^ a b "Successor submarine programme: factsheet". MoD. Retrieved 1 March 2016.
  2. ^ "HMS Audacious: 6 Feb 2020: UIN 10350 Hansard Written Answers". UK Parliament. Archived from the original on 22 November 2021. Retrieved 7 April 2021.
  3. ^ "Dreadnought". BAE Systems.
  4. ^ "The Future of the United Kingdom's Nuclear Deterrent, Factsheet 4 The Current System" (PDF). Gov.uk. December 2006. Retrieved 20 September 2015.
  5. ^ Vanguard class Military-Today.com. Retrieved 21 July 2018.
  6. ^ "Supporting the UK's deterrent". AWE. Archived from the original on 5 March 2016. Retrieved 1 March 2016.
  7. ^ "New Successor Submarines Named" (Press release). Gov.uk. 21 October 2016. Retrieved 21 October 2016.
  8. ^ "First of Barrow's new Successor submarines given historically celebrated name". North West Evening Mail. 21 October 2016. Retrieved 21 October 2016.
  9. ^ "Defence Secretary announces £400m investment for nuclear-armed submarines" (Press release). Ministry of Defence. 6 December 2018. Retrieved 6 December 2018.
  10. ^ "Defence Secretary praises 50 years of nuclear service as new submarine is named" (Press release). Ministry of Defence. 3 May 2019. Retrieved 3 May 2019.

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