Royal Navy bomb disposal experts are heading to Orkney’s Scapa Flow to deal with a torpedo warhead discovered close to the wreck of the Royal Oak.
Coastguards were alerted to the discovery on Monday.
There will be a 500m (1,640ft) exclusion zone around the wreck until the device has been dealt with. The experts are expected to arrive on Wednesday afternoon.
The Royal Oak was attacked by a German submarine in 1939, leaving 835 dead.