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.

U-boat from which codebooks and valuable cryptographic materials were recovered before sinking, facilitating, in late 1942, the second major Allied breakthrough in reading German U-boat ...

They were designed to engage in a deadly game of cat and mouse, luring in surfaced U-boats as British crews pretended to escape in “panic parties” before a German submarine commander blew up ...

On May 10th, 1945, all the German U-boats were told to surrender. The U249, which was the first German U-boat to arrive in UK waters, came into Weymouth Bay and surrendered. The commanding officer ...

The ship was transporting supplies and soldiers along the coast when it was torpedoed by German U-boat U-861 on the night of June 19, 1944. The wreck was first reported 14 years ago but was ...