I was interested to read the proposals for a flood barrage at the mouth of the Thames (NCE last week).
It is worth noting that such a scheme would also have to deal with the wreck of the SS Richard Montgomery, a Second World War Liberty ship containing some 1,400t of TNT.
To put this in context, the blast radius of an explosion on this ship would reportedly cause damage to buildings in both Sheerness and Southend.
An explosion on a similar ship at Folkestone in 1967 registered 4.5 on the Richter Scale.
While the scheme is obviously 'blue skies' thinking at this stage, the designers of this scheme may need to start thinking of solutions to this problem sooner rather than later.
Luke Ballantyne, Arup, Luke.Ballantyne@arup. com