Concrete Ships Toward the end of the First World War, and during the Second World War, the United States commisioned the construction of experimental concrete ships.
posted on Oct 13, 2005 - View this thread

The Maunsell Sea Forts: During the Second World War, three anti-aircraft forts were built in 1941-42 to protect the Thames Estuary, designed by Mr. G. A. Maunsell.
posted on Aug 1, 2005 - View this thread