Two small buildings degined as wall turrets on the line of the early 18th century Dockyard wall. Similar in style to the better known Main Gate and have same decorative treatment of brickwork. They are sited at opposite ends of the E wall of the Officer's Gardens. The buildings are square, of redbrick, with three storeys and pitched slate-covered roofs. They have large plinths and are massively buttressed at their corners. Now used as dwellings.