Seven crab fishermen were injured when their boat was blasted out of the water by a suspected Second World War explosive.
Several crew members of the 42ft boat Galwad-Y-Mor suffered life-changing injuries in the accident, 25 miles north of Cromer, Norfolk, last Tuesday.
The two British and five Latvian men were hauling in a line of crab pots when they are believed to have dredged up the unexploded munition.
The mine or bomb exploded under the water, propelling the boat completely out of the sea, before it smashed back down again.
The blast, which occurred at 11.20am, wrecked the wheelhouse and ruptured the hull, causing water to flood into the engine room.