Enigma Machine and Its U-boat Codes - Preface

Enigma Machine and Its U-boat Codes (Illustration) Famous Historical Events World War II Geography STEM Social Studies

This image depicts U-760 (a Type VIIC U-Boat) at sea.  Because this type of vessel (in the foreground) is a submarine, it does not have much freeboard above the water.  Image online, courtesy U-Boat.net.


I still wake up at night
fifty-six years later
to find myself
going down that ladder.

David Balme

The North Atlantic seas south of Iceland were relatively calm on May 9, 1941 as a British convoy made its way from England to Nova Scotia. Escort ships, like the corvette HMS Aubretia, were desperately needed to protect supply ships from the ever-present threat of German U-boats

On board the destroyer Bulldog, senior ship of the 3rd Escort Group, Sub-Lieutenant David Balme had no clue his impending heroism would give British intelligence what they needed to decipher the secret code of the Third Reich - Hitler's "Enigma" encryption machine.

Commanding the Bulldog, A.J. (Joe) Baker-Creswell had no idea his instinctual decisions over the next several hours would turn the tide of the war against Germany.

In charge of a lurking nearby U-Boat, Fritz-Julius Lemp (commanding officer of U-110) could not have known he had only a few hours to live.

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Author: Carole D. Bos, J.D. 5197stories and lessons created

Original Release: Feb 01, 2001

Updated Last Revision: Nov 09, 2016

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"Enigma Machine and Its U-boat Codes" AwesomeStories.com. Feb 01, 2001. Jun 02, 2020.
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