The Maunsell Sea Forts of WWII (Photos) — War History Online. At the outbreak of World War II, the Port of London was the busiest port in the world. The German Navy recognized the Thames as an important shipping route and sought to disrupt its usage through the use of a new secret weapon — the magnetic influence mine. Essentially these mines were detonated by the presence of a large metallic object, like that of a steel-hulled ship. This meant that the mines could detonate with ships in close proximity, not having to actually make physical contact to be effective.
Hundreds of ships were sunk by these innovative mines and the Allies needed a solution, fast. The Maunsell Sea Forts The design was a concrete construction; a pontoon barge on which stood two cylindrical towers on top of which was the gun platform mounting two 3.75-inch guns and two 40 mm Bofors guns. Each fort accommodated approximately 120 men, housed mainly within seven floors of the 24’ diameter (7.3m) twin reinforced concrete legs.
The Maunsell Army Sea Towers Project Redsand. Alle legale Radio en TV Zenders in Nederland. Radio Caroline. Radio Caroline. Agentschap Telecom. Offshoreradio.org.