 Her hull was sheathed and caulked, and a third internal deck installed to provide cabins, a powder magazine and storerooms.A longboat, pinnace and yawl were provided as ship's boats, as well as a set of sweeps to allow the ship to be rowed if becalmed or demasted.After commissioning into the Royal Navy as "His Majesty's Bark the Endeavour," the ship was supplied with ten 4-pounder cannons and twelve swivel guns, for defence against native attack while in the Pacific.