On 25th March 2021, HMS Trenchant, sailed into HMNB Devonport, Plymouth for the last time, flying her decommissioning pennant, ahead of decommissioning later in 2021. HMS Trenchant served 32 years in service.
HMS Trenchant (S91) is a Trafalgar-class nuclear-powered fleet submarine of the Royal Navy built by Vickers Shipbuilding, Barrow-in-Furness. Launched 3rd November 1986 and Commissioned 14th January 1989.