HMS Explorer (P164) is an Archer-class P2000-type patrol and training vessel of the British Royal Navy. The ship is assigned to the Yorkshire Universities Royal Naval Unit (URNU), serving the universities of York, Hull, Sheffield and Leeds. The commanding officer has been Lieutenant Dafydd Bryden since the summer of 2011. Due to unforeseen circumstances, Lieutenant Simon Shaw has assumed command of HMS Explorer on 14 June 2013, along with HMS Exploits ships company. This additional command has made Simon Shaw the only URNU commanding officer to have command of two P2000 patrol vessels at the same time.