“German submarine U-925”的意思、由来-开放百科全书

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German submarine U-925

释义

Design
Service history
References
Bibliography
External links

{{use dmy dates|date=April 2016}}{{Infobox ship image

Ship image=U 570.jpg

Ship image size=300px

Ship caption=U-570 Type VIIC submarine that was captured by the British in 1941. This U-boat is almost identical to U-925.
}}{{Infobox ship career

Hide header=

Ship country=Nazi Germany

Nazi Germany|naval}}

Ship name=U-925

Ship ordered=25 August 1941

Ship builder=Neptun Werft AG, Rostock

Ship yard number=512

Ship laid down=15 June 1942

Ship launched=6 November 1943

Ship commissioned=30 December 1943

Ship homeport=

Ship motto=

Ship nickname=

Ship fate=Missing since 25 August 1944

Ship notes=
}}{{Infobox ship characteristics

Hide header=

Header caption=

Ship class=Type VIIC submarine

Ship 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|220|m|ft|abbr=on}}
Crush depth: {{convert|250|–|295|m|ft|abbr=on}}

Ship complement=4 officers, 44–52 enlisted

Ship sensors=

Ship EW=

Ship armament=

5 × {{convert|53.3|cm|in|0|abbr=on}} torpedo tubes (four bow, one stern)
14 × torpedoes or
26 TMA mines
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=yes

label=

partof=

4th U-boat Flotilla (Training)
30 December 1943 – 31 July 1944
1st U-boat Flotilla (Active service)
1 August 1944 – 25 August 1944

commanders=

Oblt.z.S. Hellmut Knoke^[1]
30 December 1943 – 25 August 1944

operations=1 patrol

victories=None
}}

German submarine U-925 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

She was ordered on 25 August 1941, and was laid down on 1 April 1943 at Neptun Werft AG, Rostock, as yard number 512. She was launched on 6 November 1943 and commissioned under the command of Oberleutnant zur See Hellmut Knoke on 30 December 1943.^[2]

Design

German Type VIIC submarines were preceded by the shorter Type VIIB submarines. U-925 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 SSW GU 343/38-8 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-925 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 or 26 TMA mines, 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 44 — 52 men.{{sfn|Gröner|1991|pp=43-46}}

Service history

On 24 August 1944, U-925 left Kristiansand on her first war patrol, sailing through the Iceland passage en route to the North Atlantic for weather reporting duty. Nothing was ever heard again from U-925 and she was posted missing on 18 September 1944, all hands, 51 crewmen, lost.^[2]

References

1. ^{{cite web |url=http://uboat.net/men/commanders/624.html |title=Hellmut Knoke |last=Helgason |first=Guðmundur |website=German U-boats of WWII - uboat.net |accessdate=5 April 2016}}
2. ^¹{{cite web|url=http://uboat.net/boats/u925.htm|title=U-925|last=Helgason|first=Guðmundur|website=German U-boats of WWII - uboat.net|accessdate=5 April 2016}}

Bibliography

{{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
}}{{Refend}}

External links

{{cite web

|url=http://uboat.net/boats/patrols/u925.html
|title=Patrols by U-925
|last=Helgason
|first=Guðmundur
|website=German U-boats of WWII - uboat.net
}}

Roll of Remembrance

{{German Type VII submarines}}{{August 1944 shipwrecks}}{{Subject bar
| portal1=Military of Germany
| portal2=Submarine
| portal3=World War II
}}{{coord missing|Norwegian Sea}}{{DEFAULTSORT:U0925}}

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