HMS Vigilant (S30)

HMS Vigilant (S30)

HMS Vigilant is the third Vanguard-class submarine of the Royal Navy. Vigilant carries the Trident ballistic missile, the UK's nuclear deterrent.

Vigilant was built at Barrow-in-Furness by Vickers Shipbuilding and Engineering Ltd (now BAE Systems Submarine Solutions), was launched in October 1995, and commissioned in November 1996.

Peter Hennessy reporting for the Today programme on BBC radio 4, reported from Vigilant on 28 December 2007. He reported that there is a grey safe in the control room that has an inner safe that only the commanding officer and executive officer can open. In that safe is a letter from the current Prime Minister of the United Kingdom, the letter contains guidance and orders if the United Kingdom is attacked by nuclear weapons.

The French Navy also have a SSBN in service called Vigilant.