Launched on 4 November 1967, she was the last of her class remaining in service with the navy, decommissioning in 1996. Repulse was the third Polaris Missile submarine of the Resolution class to be planned; HMS Renown was the second. Due to delays with Renown’s build at Cammell Laird’s Birkenhead shipyard, the Barrow-in-Furness Vickers built Repulse overtook Renown and was commissioned second of class. Repulse famously ran aground on launch, much to the delight of the CND protesters and was subsequently “blacked” by the shipyard unions. She survived all of these setbacks to become the longest-serving Polaris submarine.