AN EARLY BRONZE MORTAR, LATER ENGRAVED 'MAIRI R.Y.S' of typical tapering cylindrical form cast in relief with a vase of flowers and a man on horseback, 9.5cm high The Royal Yacht Squadron is one of the most prestigious yacht clubs in the world. Its clubhouse is Cowes Castle on the Isle of Wight. Member yachts are given the Suffix RYS to their names.