The U-boats' 15-knot surface speed was almost twice that of an average convoy and equal to that of most anti-submarine escorts. A German band welcomes a Type VIIC U-boat, the mainstay of the ...

The type UC II class of submarine could operate ... Auten argued in his book. German U-boats were forced to fire, lose thousands of shells and waste time rearming back in port.

What you call them depends on where they're made. A U-boat is nothing more than the Anglicized term for a German submarine and isn't strikingly different from U.S. subs. The whole "boat ...