THE SEA FORTS OF THE THAMES: The Great Structures Raised on Stilts at Key-Points in the Estuary
... THE SEA FORTS OF THE THAMES The Great Structures Raised on Stilts at Key-Points in the Estuary MILITARY SEA FORTRESSES The seven towers comprising one of the Army forts planted on our shipping lanes to beat off mine-laying planes. The towers are of steel, mounted on concrete legs six of them carry A.-A. guns and the seventh is a control tower A CLOSE-UP OF ONE OF THE TOWERS The steel box is 36 ...