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intelligence able to decipher messages to U-boats and discover their locations. The problem remained that if the navy were to attempt to capture one of the weatherships, the German crew would have time to destroy or throw their Enigma settings into the sea before they were boarded. Hinsley instead reasoned that the following month's Enigma settings would be locked in a safe aboard the ship and could be overlooked if the
Germans were surprised and forced hastily to abandon ship. The
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tables used in Enigma. This would have resulted in a codebreaking blackout unless further settings could be captured. Hinsley and the
Admiralty were concerned that capturing another weather ship might alert the Germans to their vulnerability and cause them to immediately alter them. It was eventually
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Although the weather ships did not transmit enciphered weather reports on Enigma machines, they needed one to decode the Enigma signals transmitted to them. Hinsley realised that if the code books could be captured from one of these trawlers, the naval Enigma system could be broken, with
British
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with gunfire; confirmation of the sinking was sent by radio, but the boarding was specifically not mentioned so that listening
Germans would not suspect the recovery of Enigma materials. The recovered material allowed further understanding of the Enigma codes and resulted in faster decoding of
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code books as were being used on U-boats. The trawlers, which transmitted weather reports to the
Germans, were being sent naval Enigma messages.
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Dr. Mark
Baldwin, "The Enigma Machine", presentation to the BCS Tayside & Fife Branch, Abertay University, 26 August 2019
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in 1940, and entered naval service in
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The references used may be made clearer with a different or consistent style of
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and a large amount of material was collected, then the Allied warships sank
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encrypted messages, as well as providing an up-to-date set of codes.
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to provide weather reports for German shipping, particularly German
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crew quickly abandoned the ship in two lifeboats. Minutes later,
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despatched seven destroyers and cruisers to the northeast of
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acquired important German code books and parts of an
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383:decided to take the risk and on 25 June 1941, the
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597:HMS Tartar and the capturing of the Lauenburg
371:at the beginning of May 1941. The target was
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674:World War II shipwrecks in the Arctic Ocean
447:At around 7pm on 28 June, a lookout aboard
280:was captured and sunk on 28 June 1941. The
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311:for her owners, H. Bischoff & Co, of
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44:adding citations to reliable sources
644:Auxiliary ships of the Kriegsmarine
568:Wetterbeobachtungs-Schiff Lauenburg
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592:Breaking Germany's Enigma Code
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537:February 2015
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96:February 2015
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57: –
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51:Find sources:
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208:Commissioned
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38:Please help
33:verification
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623: /
461:Lauenburg's
309:Geestemünde
187:1 July 1936
659:1938 ships
638:Categories
529:footnoting
497:References
419:Scapa Flow
395:destroyers
292:Early life
282:Royal Navy
245:19–21 crew
240:Complement
232:Converted
66:newspapers
473:Lauenburg
469:Lauenburg
457:Jan Mayen
453:Lauenburg
441:Lauenburg
431:Lauenburg
423:Lauenburg
412:HMS
405:HMS
398:HMS
388:HMS
365:Admiralty
323:Lauenburg
305:Lauenburg
297:Lauenburg
278:Lauenburg
261:Lauenburg
184:Laid down
168:Lauenburg
135:Lauenburg
664:Trawlers
525:citation
480:See also
451:sighted
393:and the
200:Acquired
192:Launched
174:Namesake
608:71°00′N
414:Bedouin
407:Jupiter
390:Nigeria
373:München
369:Iceland
343:British
333:fleet.
274:U-boats
234:trawler
143:History
80:scholar
611:8°20′W
465:Tartar
449:Tartar
400:Tartar
380:bigram
357:Enigma
331:U-boat
313:Bremen
130:Tartar
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87:JSTOR
73:books
527:and
455:off
410:and
341:The
229:Type
216:Fate
203:1940
195:1938
164:Name
128:HMS
59:news
42:by
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