HMS Resolution (S22) was the first of the Royal Navy's Resolution-class ballistic missile submarines. Ordered in May 1963, she was built by Vickers Armstrong at a cost of £40.2m. The keel was laid down on 26 February 1964 by the Director General Ships, Sir Alfred Sims, and the launch was on 15 September 1966, attended by Queen Elizabeth the Queen Mother. The submarine was commissioned on 2 October 1967, and following extensive trials, including the firing of her first Polaris missile on 15 February 1968, commenced her first patrol on 15 June 1968.