
4 0 c m
33cm
actual image size: 25cm x 32cm
Description
Introduced on Atlantic U- Boats in February 1942, the code produced by the MK 4 Enigma was not broken until December 1942, after the capture of cypher documents from U-559 in the Mediterranean. The cracking of German cypher codes by Allied intelligence was a major achievement in cryptanalysis and played a key role in the outcome of the North Atlantic U-boat engagements.
Image Details
Image Ref.
10315649
© Science Museum / Science & Society Picture Library