Amazing: Three U-Boats missing until 1985 when found in a U-boat bunker in Hamburg

Because of the increasing intensity of air-raids, “Elbe II” was used for fitting out boats, new ones and those having happily returned. Two shifts were covered by 200 yard-workers, mostly Germans. The last boats to enter “Elbe II” were also the most modern ones in the world – the typeXXI-boats U-2505, U-3004 and U-3506 which had an estimated dive-depth of 400 m. They had to undergo last works before setting to sea with the planned destination of Caribbean. U-2505 had already suffered bomb damage during an air-raid before, and also…

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