Hunt for lost First World War submarines
Explorers are launching a new project to locate dozens of British and German submarines which sank off the coast of England during the First World War, as part of a major new study to mark the centenary of the conflict.
The English Heritage research will involve identification and analysis of all submarine shipwrecks from the period which are within territorial waters - 12 miles from the coast.
Preliminary research by the team, studying historical records, has already identified three British and 41 German submarines from the conflict which are known to have sunk in the area.
The locations of some of these have already been established, but others have yet to be discovered....