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 ...

In that same vein, all U-boats are submarines, but not all submarines are U-boats. What you call them depends on where they're made. A U-boat is nothing more than the Anglicized term for a German ...