Hello Pete,
Enigma machines went to 4 rotors beginning of 1943. Allied were reading Enigma since end of 1942. Even with the 4 rotors Enigma, Allied were able to read it and know the approximate locations of U-Boats.
Less successes against vessels prompted Donitz to establish WOLF PACKS of U-Boats....no big successes there too...
Turning point of the U-Boat warfare came in summer 1943 when they became the game instead of being the hunter...
Excellent books on the subjetc by author Blair...
kidvett [img]cool.gif[/img]
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