CHALFONT

This coin represent The Royal Navy’s special forces covert deployment and recovery team based onboard Astute class submarines. The Dry Deck Shelter or DDS fitted to the Astute class boats is a cylindrical chamber approximately 13m long by 3m diameter. In UK service it is formally named the Special Forces Payload Bay (SFPB) and was procured under ‘project CHALFONT’, although submariners nickname it “the caravan of death”. https://www.navylookout.com/in-focus-royal-navy-submarine-special-forces-delivery-systems/