About St Helens Fort
Lighthouses, Towers, Architecture, Fortifications, Historic, Interesting Places, Other Fortifications, Other Towers
St Helens Fort is a sea fort in the Solent close to the Isle of Wight, one of the Palmerston Forts near Portsmouth. It was built as a result of the Royal Commission on the Defence of the United Kingdom of 1859, in order to protect the St Helens anchorage.
The fort was designed by Captain E. H. Stewart, overseen by Assistant Inspector General of Fortifications, Colonel W. F. D. Jervois. Construction began in 1865 and was completed in 1878, at a cost of £123,311. It suffered badly from subsidence which forced many changes to the plans, ending up with two 10-inch 18-ton rifled muzzle-loading (RML) guns to landward and one 12.5-inch 38-ton RML gun to seaward.