See second box?

Question

During the secondworld war how many times in the battle of the at lantic were the enigma decodeing materials captured by royal & American navey ships from enemy u boats

Answer 1

on several occasions ,but the only one captured by the americans was in a movie.

Answer 2

Bletchley Park considered captures from the following German ships to be important-

VP 26 (a patrol boat), Krebs, München and Lauenburg in 1940 and 1941;
VP Geier (December 1942)

The principal captures from U-boats were from-

U 33 (rotors VI and VII);
U 110 (including the settings for some Offizier (Officer) signals. Its Enigma machine did not help Bletchley Park, since the British had a machine and all 8 rotors by then);
U 559 (2 short signal books).

In addition, rotor VIII was captured in August 1940, although no one now knows where or how

The US Navy captured U 505 in June 1944. It yielded the keys for June 1944, plus other Enigma related material.

It is not generally appreciated that eventually over 100 US Navy bombes (codebreaking machines for Enigma) bore the brunt of breaking 4-rotor naval Enigma, and that the US Navy made over half of their bombes available to help Bletchley break German army and air force Enigma traffic.

This is a complex topic. The best books on the various captures are-

David Kahn, Seizing the Enigma: The Race to Break the German U﷓Boat Codes, 1939﷓1945. (Boston, Houghton Mifflin. 1991)

Hugh Sebag-Montefiore, Enigma: The Battle for the Codes. (London: Weidenfeld and Nicolson. 2000)

Answer 3

In May 1941 a German weather ship, the Munchen, was boarded by the Royal Navy, vital documents obtained and the ship destroyed.

Soon afterwards the British Navy captured and boarded the German submarine U-110. Its coding equipment was intact. Other material recovered included codebooks, and key listings for various German Navy and submarine codes. The intact Enigma machine, with the daily settings in place, together with its eight rotors.

For several months it looked as if Bletchley was going to remain locked out from the German naval codes. However, in October 1942 men from the Royal Navy succeeded in capturing and entering U-559 and recovered vital Enigma machine parts and documents which allowed the code breakers to get back into the German navy’s codes.

Answer 4

there were several such instances. I think only 2 Enigmas were captured on U-boats but that was not sufficient because the codes were changed quite frequently, so having just the machine was not enough. Far more important was the capture of the maps- because the U-boats used their own set of grids for navigation purposes.
The captured materials were usually useful only for a month or so- until the codes were changed.
Of much greater importance was the breaking of the Enigma code principle, and that was done just before the war by Polish cryptographers and matematicians and the knowledge (and experts) was supplied to the UK. Once that was done the de-coding of individual Enigma messages became a matter of hours
Of course that was one of the best kept secrets of the war and was the basis of the victory in the Atlantic and in Africa. Churchill even allowed for the bombing of Coventry to go unopposed just to safeguard this secret.

Answer 5

the americans never had an enigma machine,the only one was in british hands at blechley park in england.

Answer 6

The past should be left where it belongs, like all history, its pointless

Answer 7

i dont know bout it
but actually who cares?????????????????/