has a citadel containing the barrack block, main magazine and other facilities, together with two small gun batteries, one facing west (three guns) and one east (two guns) in the Redan. The fort's main armament was located in three major batteries facing seawards. The batteries are separated from each other, and from the Citadel, by ditches and drawbridges.

Following extensive clearance and conservation work, co-ordinated by the Living Islands Project,