Here is the problem with the 911 conspiracy theory's......

[Confusious]

47. Nope, not me

Last edited Mon Feb 6, 2012, 05:56 PM - Edit history (1)

You. It's not good to get your history from Hollywood. Or your conspiracy theories from the internet.

The first capture of a Naval Enigma machine and associated cipher keys from a U-boat was made on May 9, 1941 by HMS Bulldog of Britain's Royal Navy, commanded by Captain Joe Baker-Cresswell. The U-boat was U-110. In 1942, the British seized U-559, capturing additional Enigma codebooks. "The captured codebooks provided vital assistance to the British cryptographers, led by Alan Turing, at the code-breaking hothouse of Bletchley Park, near Milton Keynes."[4]

The capture, rather than sinking, of U-570 – the only ship to be captured by an aircraft – on 27 August 1941 by a Lockheed Hudson from RAF Coastal Command was important for determining the fighting capacity of U-boats, although her crew destroyed the Enigma and cipher information. The boat was towed to port and commissioned into the Royal Navy as HMS Graph.

Out of some 15 captures of Naval Enigma material during World War II, all but two were by the British – the Royal Canadian Navy captured U-774, and the U.S. Navy seized U-505 in June 1944. By this time the Allies were already reading Naval Enigma routinely.

http://en.wikipedia.org/wiki/U-571_%28film%29

All the captures happened by chance. There was no "operation" to capture the machine. That only happened in the movies.