Patrol vessel H.M.S. Explorer (P164) off Battery Point, Portishead on 14th July 2021.She is an Archer-class P2000-type patrol and training vessel commissioned in 1986.Explorer, along with the other 13 URNU-assigned Archer class vessels, is assigned to the 1st Patrol Boat Squadron (1PBS) under the operational command of Commander 1PBS. As such, they are assigned to the Portsmouth flotilla, although in practise most vessels are based elsewhere.