. . "ironclad Hydra" . "Greek ironclad Hydra" . . . . "101.8032" . . "15.5448" . "Greek ironclad ''Hydra''" . . . . "31.484" . . "Hydra" . . . "''Hydra''" . "5.4864" . "Scrapped in 1929" . . "Greek ironclad Hydra" . . .