or U-boats, sunk, scuttled, captured, or otherwise lost to German forces during World War II. Here, naval historian Timothy Mulligan describes 25 of the most historically significant U-boats.

Joining up at the start of the war, London-born Mr Barnes went on to serve for 23 years and said sinking a German U-boat was his biggest ... years since the end of WW2, Mr Barnes, who moved ...