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3D Radar scan of the stricken sub.
First sight in 77 years - The icy tomb of 58 British submariners lost in WW2 has finally been rediscovered by accident in the North sea.
HMS Narwhal departed it's base in Blyth, Northumberland on July 22nd, 1940 tasked with the job of laying mines off German-occupied Norway before being intercepted on-route, killing everyone on board.
Now 77 years later, the wreck appears to have been discovered by a team of Polish deep-sea explorers, who were carrying out a search for one of their nation's lost submarines, the ORP Eagle.
The largely intact vessel is lying 140 miles off the coast of Scotland in waters nearly 100 metres deep.