[AVGWarhawk]

What we know of the outcome of the war, I can only speculate that the XXI would have PROLONGED the war but the end results would have been the same although more deadly to the general German population. The A-bomb probably would still have been used against Japan at the time it was and probably Germany would not have surrendered at this point. After the A-bomb was utilized in Japan, I believe the Germans would have laid down their arms at that point. No doubt the XXI for the time was a nasty weapon. Rubber coated sides to avoid sonar and asdic, snorkel, two 4000 hp diesels, six forward firing tubes full of acoustic torpedos. This makes for some really bad times for the Allies and Britian's struggle would have been much worse if not a total loss!