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The Thames Barrier.

The Thames Barrier.
The Thames Barrier.
© National Maritime Museum, London
Repro ID: H0512
Description: The Thames Barrier with a sailing vessel passing though. The width of the barrier from bank to bank is about 520m, with the four main openings each having a clear span of 61m. The four main gates are massive. Each is constructed as a hollow steel-plated structure over 20m high and weighing about 3700 tonnes. There are two smaller gates of a similar concept with 31m navigation openings, and the four falling radial gates have non-navigable openings adjacent to the riverbanks.
Creator: Unknown
Date: 24 June 1985
Credit line: National Maritime Museum, London
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