An operation is underway to remove a German WW2 wreck stuffed with explosives
The barge carrying the ordnance sank about a mile off the coast of Kaliningrad near the town of Baltiysk in a depth of 20 metres.
Although the wreck has been surveyed, a senior Russian official said that it remains a potential hazard.
Work to remove the shells will begin later this month, and each shell recovered will be taken ashore to be exploded under controlled conditions by military engineers.
It is expected to take at least three years to complete the operation and render the wreck safe.