Enigma U Boats
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Seizing The Enigma
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Author : David Kahn
language : en
Publisher: Frontline Books
Release Date : 2017-04-30
Seizing The Enigma written by David Kahn and has been published by Frontline Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-04-30 with categories.
For almost four desperate years, from 1939 to the middle of 1943, the British and, in time, American navies fought a savage, losing battle against German U-boat wolf-packs. The Allies might never have turned the tide without an intelligence coup. The race to break the German U-boat codes is one of the greatest untold stories of the Second World War. Kahn expertly brings this tale to life in this updated edition of his classic book.Soon after war broke out, Hitler's U-boats began to sever Allied lifelines. In the grey wasteland of the North Atlantic, submarines prowled; at night, the sky lit up with the flames of torpedoed and sinking merchant ships and tankers.To meet the growing crisis, ingenious amateurs joined the nucleus of dedicated professionals at Bletchley Park. As the Battle of the Atlantic raged, they raced to unlock the continually changing German naval codes. Their mission: to read the U-boat messages of Hitler's cipher device, the Enigma.Critical to their success was a series of raids at sea. U-110, captured intact in the mid-Atlantic, yielded an example of the Enigma machine itself - as well as a trove of secret documents. The weather ship Lauenburg, seized near the Arctic ice pack, provided code-settings for an entire month. In the Mediterranean, two sailors rescued a German weather cipher than enabled the team at Bletchley to solve the Enigma after a yearlong blackout.
Enigma U Boats
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Author : Jak P. Mallmann Showell
language : en
Publisher: US Naval Institute Press
Release Date : 2000
Enigma U Boats written by Jak P. Mallmann Showell and has been published by US Naval Institute Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with History categories.
After World War I, the German admirals were shocked to discover that the Royal Navy had had an immense advantage--they had penetrated the secret German radio codes. Confronted with this fact, the Germans determined that any future codes would need to be so complex that breaking them would, theoretically, be impossible. The result was the famous Enigma machine, whose settings were altered so frequently and variables so great that the Germans believed capture of a machine by the enemy would not compromise Enigma for long. But the British proved them wrong. They managed to obtain the machine and determine the method of setting the code, giving the Allies a critical tactical advantage. As the author points out, this intelligence triumph was particularly important during the Battle of the Atlantic, when Hitler's U-boat wolf-packs were wreaking havoc on the convoy lifelines to the British Isles. Without the decoded Enigma messages, the Allies' narrow victory would likely have turned to defeat. This skillful analysis of Enigma's development and its role during U-boat operations includes details of Allied boardings of U-boats from which Enigma machines could have been captured. It is one of the greatest espionage stories in the history of naval warfare.
Enigma U Boats
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Author : Jak P. Mallmann Showell
language : en
Publisher: US Naval Institute Press
Release Date : 2009
Enigma U Boats written by Jak P. Mallmann Showell and has been published by US Naval Institute Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with History categories.
"After World War I, German admirals were shocked to discover that the Royal Navy had penetrated their secret radio codes and the new, post-war navy set about creating a system so secure that such a breach would never occur again. The result was the now famous Enigma - the Impenetrable Puzzle. This machine was so complex that it was thought no one could break into it; not even when they had a captured machine at their disposal. The German High Command was convinced that the system was wholly secure and totally impregnable." "Their supreme confidence was, however, misplaced. During World War Two, Polish cryptanalysts helped Britain to break into the Enigma system used by the Luftwaffe and Army, but the naval version was more complicated. Even so, British cryptanalysts persevered and in the end they did manage the impossible; to break into this most complicated of ciphers. As a result they helped many merchant convoys avoid the teeth of the Wolf Packs." "This book describes the story of how the tools for this incredible effort were extracted from the U-boats themselves. With a detailed analysis of the development of Enigma, its role during U-boat operations and the subsequent code-breaking at Bletchley Park, this book will be essential for all those fascinated by this enigmatic tool." --Book Jacket.
Ultra Versus U Boats
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Author : Roy Conyers Nesbit
language : en
Publisher: Casemate Publishers
Release Date : 2008-01-01
Ultra Versus U Boats written by Roy Conyers Nesbit and has been published by Casemate Publishers this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-01-01 with History categories.
Bogen omhandler søkrigen i Atlanterhavet under 2. Verdenskrig. Ved hjælp af dekrypterede tyske kodebeskeder og billeder fra krigen, fortæller forfatteren historien om de tyske ubådes skæbne. Bogen viser hvilken indflydelse Ultra og dechifreringen af Enigma koder havde på ubådskrigen.
The Secret In Building 26
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Author : Jim DeBrosse
language : en
Publisher: Random House
Release Date : 2004-04-20
The Secret In Building 26 written by Jim DeBrosse and has been published by Random House this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-04-20 with History categories.
For the first time, the inside story of the brilliant American engineer who defeated Enigma and the Nazi code-masters Much has been written about the success of the British “Ultra” program in cracking the Germans’ Enigma code early in World War II, but few know what really happened in 1942, when the Germans added a fourth rotor to the machine that created the already challenging naval code and plunged Allied intelligence into darkness. Enter one Joe Desch, an unassuming but brilliant engineer at the National Cash Register Company in Dayton, Ohio, who was given the task of creating a machine to break the new Enigma settings. It was an enterprise that rivaled the Manhattan Project for secrecy and complexity–and nearly drove Desch to a breakdown. Under enormous pressure, he succeeded in creating a 5,000-pound electromechanical monster known as the Desch Bombe, which helped turn the tide in the Battle of the Atlantic–but not before a disgruntled co-worker attempted to leak information about the machine to the Nazis. After toiling anonymously–it even took his daughter years to learn of his accomplishments–Desch was awarded the National Medal of Merit, the country’s highest civilian honor. In The Secret in Building 26, the entire thrilling story of the final triumph over Enigma is finally told. From the Trade Paperback edition.
The Capture Of U 505
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Author : Mark Lardas
language : en
Publisher: Bloomsbury Publishing
Release Date : 2022-11-24
The Capture Of U 505 written by Mark Lardas and has been published by Bloomsbury Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-24 with History categories.
U-505 was the first enemy warship the US Navy captured at sea since 1812. This is a new account of how Captain Gallery planned and executed the raid on his own initiative, and how his success almost endangered the war against the U-boats. On June 4, 1944 a US Navy antisubmarine task group in the Atlantic captured an enemy U-boat on the high seas. It was not the first time the Allies had taken a German U-boat as a prize, but the capture of U-505 was different. Captain Gallery and his Task Group 22.3 devised a risky plan to capture scuttled U-boats. This book analyses in detail Gallery's dangerous strategy, using contemporary sources to explore why he thought the reward was worth the risk: instead of attempting to sink the next U-boat that surfaced among them, a destroyer escort would send off its whaleboat. Everyone else was to smother the U-boat with light gunfire to encourage its crew to abandon quickly. Unaware that the Allies had already cracked the German's codes and the capture of a U-boat could endanger that secret, Gallery hoped to capture the vessel's codes and coding equipment to read U-boat message traffic. The plan culminated in the capture of U-505 in early June, which nearly caused the exposure of the Bletchley Park codebreaking secret. Featuring contemporary photographs, specially commissioned artwork and 3D maps, this book is a fascinating exploration of one of the most controversial and dangerous raids, which could have changed the outcome of World War II as we know it.
The Mystery Of U 33
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Author : Nigel Graddon
language : en
Publisher:
Release Date : 2010
The Mystery Of U 33 written by Nigel Graddon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with History categories.
Chronicles a number of mysterious U-boat missions during and after World War II.
Seizing The Enigma
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Author : David Kahn
language : en
Publisher:
Release Date : 2012-02-01
Seizing The Enigma written by David Kahn and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-02-01 with World War, 1939-1945 categories.
For almost four desperate years, from 1939 to mid-1943, the British and American navies fought a savage, losing battle against German submarine wolfpacks. The Allies might never have turned the tide without an intelligence coup. The race to break the German U-boat codes is one of the greatest untold stories of World War II. Kahn expertly brings this tale to life in this newly-updated edition of his classic book. Soon after war broke out, Hitler's U-boats began to sever Allied lifelines. In the gray wasteland of the North Atlantic, submarines prowled; at night, the sky lit up with the flames of exploding tankers. To meet the growing crisis, ingenious amateurs joined the nucleus of dedicated professionals at Bletchley Park. As the Battle of the Atlantic raged, they raced to unlock the continually changing German naval codes. Their mission: to read the U-boat messages of Hitler's cipher device, the Enigma. Critical to their success was a series of raids at sea. U-110, captured intact in the mid-Atlantic, yielded the Enigma machine itself and also a trove of secret documents. The weather ship Lauenburg seized near the Arctic ice pack provided codesettings for an entire month. In the Mediterranean, two sailors rescued a German weather cipher than enabled the team at Bletchley to solve the Enigma after a year-long blackout.
Naval Enigma
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Author : A. P. Mahon
language : en
Publisher:
Release Date : 2009
Naval Enigma written by A. P. Mahon and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Bletchley (Buckinghamshire, England) categories.
The Secret Capture
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Author : Stephen Roskill
language : en
Publisher: Pen and Sword
Release Date : 2011-01-31
The Secret Capture written by Stephen Roskill and has been published by Pen and Sword this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-01-31 with History categories.
For fifteen years after the end of the war all official Admiralty records showed the German submarine U 110 as sunk on 9 May 1941 by the surface escorts of convoy OB.318. As this book was the first to reveal, this was a deliberate deception, as the U-boat was actually captured and its contents fully investigated before being allowed to sink a day later, a fact skilfully kept from even the survivors of the submarines crew. As the official historian of the naval war, Roskill had followed the party line when writing his authorised account, but provoked by exaggerated claims concerning a US Navy capture of a U-boat in 1944, Roskill decided to set the record straight. His narrative is prefaced by brief coverage of previous submarine captures by the Royal Navy three Italian and one German before covering the U 110 operation in great detail, underlining the skill and bravery of those involved.We now know that the reason for the secrecy was that the U-boat gave up valuable codebooks, charts, ciphers and, most significantly, a complete and undamaged Enigma machine. At the time of the books first publication, Ultra was still a secret, so Roskill (who clearly knew about it) had to be discreet about the exact details of what was taken from the submarine while insisting on its crucial value to the war effort. However, a new introduction puts the capture into context, making clear its vital importance in the history of allied codebreaking in World War Two.