There are two answers to that question. Historically, a number of these bombs were shipped unfused, but the records are not available to know whether they were fused or not. In everything we have done, we have made the most cautious assumptions. The other modelling that has been done involved testing similar explosives to see what state they would be in, but that has not been done on the explosives on board the vessel.
The Government take their responsibility for the wreck extremely seriously. As part of our legal duty under Section 2 of the Protection of Wrecks Act 1973, we have designated a prohibited area around the wreck, and it is an offence to enter this area without the written permission of the Secretary of State. The last known unauthorised incursion into the area was by a paddle-boarder, to whom the noble Lord, Lord Harris, referred, in 2015.