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词条 German submarine U-771
释义

  1. Design

  2. Service history

     First patrol  Second patrol  Wolfpacks 

  3. See also

  4. References

  5. Bibliography

  6. External links

{{Infobox ship image
Ship image=Ship caption=
}}{{Infobox ship career		Hide header=Ship country=Nazi GermanyNazi Germany|naval}}Ship name=U-771Ship ordered=21 November 1940Ship builder=Kriegsmarinewerft WilhelmshavenShip yard number=154Ship laid down=21 August 1942Ship launched=26 September 1943Ship commissioned=18 November 1943Ship homeport=Ship motto=Ship nickname=Venturer|P68|6}} on 11 November 1944. All hands lost.[1]Ship notes=
}}{{Infobox ship characteristics		Hide header=Header caption=Ship class=Type VIIC submarineShip displacement=
  • {{convert|769|t|LT|0}} surfaced
  • {{convert|871|t|LT|0|abbr=on}} submerged
Ship length=
  • {{convert|67.10|m|ftin|abbr=on}} o/a
  • {{convert|50.50|m|ftin|abbr=on}} pressure hull
Ship beam=
  • {{convert|6.20|m|ftin|abbr=on}} o/a
  • {{convert|4.70|m|ftin|abbr=on}} pressure hull
9.60|m|ftin|abbr=on}}4.74|m|ftin|abbr=on}}Ship power=
  • {{convert|2800|–|3200|PS|kW bhp|abbr=on}} (diesels)
  • {{convert|750|PS|kW shp|abbr=on}} (electric)
Ship propulsion=
  • 2 shafts
  • 2 × diesel engines
  • 2 × electric motors
Ship speed=
  • {{convert|17.7|kn|lk=in}} surfaced
  • {{convert|7.6|kn}} submerged
Ship range=
  • {{convert|8,500|nmi|abbr=on|lk=on}} at {{convert|10|kn}} surfaced
  • {{convert|80|nmi|abbr=on}} at {{convert|4|kn}} submerged
Ship test depth=
  • {{convert|230|m|ft|abbr=on}}
  • Crush depth: {{convert|250|–|295|m|ft|abbr=on}}
Ship complement=4 officers, 40–56 enlistedShip sensors=Ship EW=Ship armament=
  • 5 × {{convert|53.3|cm|in|0|abbr=on}} torpedo tubes (four bow, one stern)
  • 14 × torpedoes
  • 1 × {{convert|8.8|cm|in|2|abbr=on}} deck gun (220 rounds)
  • 1 × {{convert|3.7|cm|in|abbr=on}} Flak M42 AA gun
  • 2 × twin {{convert|2|cm|in|sp=us|abbr=on}} C/30 anti-aircraft guns
Ship notes=
}}{{Infobox service record		is_ship=yeslabel=partof=
  • 31st U-boat Flotilla
  • 18 November 1943 – 31 May 1944
  • 9th U-boat Flotilla
  • 1 June – 31 July 1944
  • 11th U-boat Flotilla
  • 1 August – 30 September 1944
  • 13th U-boat Flotilla
  • 1 October – 11 November 1944
codes=commanders=
  • Oblt.z.S. Helmut Block
  • 18 November 1943 – 11 November 1944
operations=victories=1 Allied aircraft shot down.
}}
German submarine U-771 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II. She was ordered on 21 November 1940, and was laid down on 21 August 1942 at Kriegsmarinewerft, Wilhelmshaven, as yard number 154. She was launched on 26 September 1943 and commissioned under the command of Oberleutnant zur See Helmut Block on 18 November of that year.[1]

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-771 had a displacement of {{convert|769|t|LT}} when at the surface and {{convert|871|t|LT}} while submerged.{{sfn|Gröner|1991|pp=43-46}} She had a total length of {{convert|67.10|m|ftin|abbr=on}}, a pressure hull length of {{convert|50.50|m|ftin|abbr=on}}, a beam of {{convert|6.20|m|ftin|abbr=on}}, a height of {{convert|9.60|m|ftin|abbr=on}}, and a draught of {{convert|4.74|m|ftin|abbr=on}}. The submarine was powered by two Germaniawerft F46 four-stroke, six-cylinder supercharged diesel engines producing a total of {{convert|2800 to 3200|PS|kW shp|-1}} for use while surfaced, two Garbe, Lahmeyer & Co. RP 137/c double-acting electric motors producing a total of {{convert|750|PS|kW shp}} for use while submerged. She had two shafts and two {{convert|1.23|m|ft|abbr=on|0}} propellers. The boat was capable of operating at depths of up to {{convert|230|m}}.{{sfn|Gröner|1991|pp=43-46}}

The submarine had a maximum surface speed of {{convert|17.7|kn}} and a maximum submerged speed of {{convert|7.6|kn}}.{{sfn|Gröner|1991|pp=43-46}} When submerged, the boat could operate for {{convert|80|nmi}} at {{convert|4|kn}}; when surfaced, she could travel {{convert|8500|nmi}} at {{convert|10|kn}}. U-771 was fitted with five {{convert|53.3|cm|in|0|abbr=on}} torpedo tubes (four fitted at the bow and one at the stern), fourteen torpedoes, one {{convert|8.8|cm|in|2|abbr=on}} SK C/35 naval gun, (220 rounds), one {{convert|3.7|cm|in|abbr=on}} Flak M42 and two twin {{convert|2|cm|in|sp=us|abbr=on}} C/30 anti-aircraft guns. The boat had a complement of between forty-four and sixty.{{sfn|Gröner|1991|pp=43-46}}

Service history

U-771 had a comparatively brief service career. While she was commissioned on 18 November 1943, she was not assigned to any war flotillas until 1 June 1944. She was in action for less than a year before being sunk on 11 November 1944, after only two patrols at sea.[1]

First patrol

Following training exercises with the 31st U-boat Flotilla from 18 November 1943, to 31 May 1944, U-771 was assigned to the 9th U-boat Flotilla on 1 June 1944, and was given the position as the lead boat in the flotilla.[1] The next day, U-771 left the port city of Hatvik for Bergen, occupied Norway. On 21 June 1944, U-771 began her first war patrol,[2] leaving the port city of Stavanger (at which she had arrived from Bergen the day before). For a period of 25 days, U-771 roamed the North Sea in search of Allied convoys. While she never made contact with any enemy vessels, on 26 June 1944, a British Consolidated Liberator aircraft coded 'N' from No. 86 Squadron RAF engaged U-771 and {{GS|U-317||2}} just north of the British Isles.[3] U-317 was sunk during the action, but flak from U-771 damaged the Liberator and forced it back to base, where it was judged damaged beyond repair. U-771 continued her patrol. This was the only time during the war that U-771 had any contact with the enemy prior to her sinking.[4] On 15 July, U-771 returned to her U-boat base at Bergen.[5]

Second patrol

U-771 spent the next three months travelling to various Norwegian ports, including Trondheim, Kristiansand, Bergen, Bogenbucht, and Hammerfest.[2] During this time, U-771 was re-assigned to the 11th U-boat Flotilla on 1 August 1944; she remained a part of that flotilla until 30 September, when she was again re-assigned, this time to the 13th U-boat Flotilla.[1] On 14 October 1944, U-771 finally left Hammerfest and headed into the Arctic Ocean. Twenty-nine days after she left Hammerfest, on 11 November 1944, U-771 was sunk in the Andfjord near Harstad, Norway, by torpedoes fired by the British submarine {{HMS|Venturer|P68|6}}. All 51 of her crewmembers were killed.[6]

Wolfpacks

U-771 took part in three wolfpacks, namely.

  • Zorn (27–30 September 1944)
  • Regenschirm (14–16 October 1944)
  • Panther (16 October - 10 November 1944)

See also

  • Battle of the Atlantic

References

1. ^1 2 3 4 {{Cite web |url=http://uboat.net/boats/u771.html |title=The Type VIIC boat U-771 |last=Helgason |first=Guðmundur |website=German U-boats of WWII - uboat.net |accessdate=29 December 2014}}
2. ^1 {{cite web |url=http://uboat.net/boats/patrols/u771.html |title=Patrols by U-771 |last=Helgason |first=Guðmundur |website=German U-boats of WWII - uboat.net |accessdate=19 March 2010}}
3. ^{{cite web |url=http://uboat.net/history/aircraft_losses.htm |title=U-boat successes against aircraft |last=Helgason |first=Guðmundur |website=German U-boats of WWII - uboat.net |accessdate=2 March 2010}}
4. ^Preisler, Jerome (2012), Page 99
5. ^{{cite web |url=http://uboat.net/boats/patrols/patrol_2447.html |title=Patrol info for U-771 (First patrol) |last=Helgason |first=Guðmundur |website=German U-boats of WWII - uboat.net |accessdate=19 March 2010}}
6. ^{{cite web |url=http://uboat.net/boats/patrols/patrol_2454.html |title=Patrol info for U-771 (Second patrol) |last=Helgason |first=Guðmundur |website=German U-boats of WWII - uboat.net |accessdate=19 March 2010}}

Bibliography

{{Refbegin}}
  • {{cite book | last1 = Busch | first1 = Rainer | last2 = Röll | first2 = Hans-Joachim | translator-last = Brooks | translator-first = Geoffrey | title = German U-boat commanders of World War II : a biographical dictionary | publisher = Greenhill Books, Naval Institute Press | location = London, Annapolis, Md | year = 1999 | isbn = 1-55750-186-6 | ref = harv}}
  • {{cite book

|last1=Busch
|first1=Rainer
|last2=Röll
|first2=Hans-Joachim
|title=Deutsche U-Boot-Verluste von September 1939 bis Mai 1945
|trans-title=German U-boat losses from September 1939 to May 1945
|work=Der U-Boot-Krieg
|volume=IV
|publisher=Mittler
|location=Hamburg, Berlin, Bonn
|year=1999
|isbn=3-8132-0514-2
|language=German
|ref=harv
}}
  • {{cite book

|last1=Gröner
|first1=Erich
|author-link1=
|author-mask1=
|last2=Jung
|first2=Dieter
|display-authors=
|last-author-amp=
|last3=Maass
|first3=Martin
|translator-last1=Thomas
|translator-first1=Keith
|translator-last2=Magowan
|translator-first2=Rachel
|year=1991
|title=U-boats and Mine Warfare Vessels
|volume=2
|work=German Warships 1815–1945
|location=London
|publisher=Conway Maritime Press
|isbn=0-85177-593-4
|ref=CITEREFGr.C3.B6ner1991
}}
  • {{cite book | last=Preisler | first=Jerome | authorlink=| author2=Kenneth Sewell | title=Code Name Caesar: The Secret Hunt for U-Boat 864 During World War II | publisher=Berkley Books | year=2012 | location=New York | pages=| url=| doi=| id=| isbn=978-0-425-245255}}
{{Refend}}

External links

  • {{Cite web

|url=http://uboat.net/boats/u771.html
|title=The Type VIIC boat U-771
|last=Helgason
|first=Guðmundur
|website=German U-boats of WWII - uboat.net
|accessdate=29 December 2014
}}{{German Type VII submarines}}{{November 1944 shipwrecks}}{{Subject bar
| portal1=Military of Germany
| portal2=Submarine
| portal3=World War II
}}{{use dmy dates|date=December 2014}}{{DEFAULTSORT:U0771}}

10 : German Type VIIC submarines|U-boats commissioned in 1943|U-boats sunk in 1944|World War II submarines of Germany|1943 ships|World War II shipwrecks in the Arctic Ocean|Ships built in Wilhelmshaven|U-boats sunk by British submarines|Ships lost with all hands|Maritime incidents in November 1944
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