 The original plan called for 83 Martello towers, each mounting a single heavy gun, at intervals along the coast and three 11-gun towers at Sea Houses (Eastbourne), Rye Harbour and Dymchurch.In the event, 74 Martello Towers were actually built and plans for the 11-gun tower at Rye were abandoned.The 11-gun towers, which came to be known as "circular forts" or "grand redoubts", were intended to act as barracks and stores depots for the rest of the Martello chain, as well as formidable fortresses in their own right.