High Quality Content by WIKIPEDIA articles! HMS Grouper was a Royal Navy Ballahoo-class schooner of four 12-pounder carronades and a crew of 20. The prime contractor for the vessel was Goodrich Co., in Bermuda, and she was launched in 1804.Grouper was wrecked off Guadeloupe in 1811. This schooner was the only Royal Navy ship ever to use the name.