 Two of the batteries would be located on the south bank at Shornemead, about north-west of Higham; at Lower Hope Point, about north-west of Cliffe; and on the north bank at East Tilbury, about north of the old Henrician blockhouse.The batteries would have a maximum range of about and their arcs of fire would overlap, enabling them to support each other.The new battery was constructed during 1799 on marshy ground a short distance south-east of St Catherine's Church.