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{{Short description|German World War II submarine}}
{|{{Infobox ship begin}}
{|{{Infobox ship begin}}
{{Infobox ship image
{{Infobox ship image
|Ship image=
|Ship image=
|Ship caption=''U-D4''
|Ship caption=''UD-4''
}}
}}
{{Infobox ship career
{{Infobox ship career
|Hide header=
|Hide header=
|Ship country=Netherlands
|Ship flag={{shipboxflag|Netherlands}}
|Ship name=HNLMS ''O 26''
|Ship namesake=
|Ship ordered=24 June 1938
|Ship awarded=
|Ship builder=''[[Rotterdamsche Droogdok Maatschappij]]'', [[Rotterdam]]
|Ship original cost=
|Ship yard number=
|Ship way number=
|Ship laid down=20 April 1939
|Ship launched=
|Ship sponsor=
|Ship christened=
|Ship completed=
|Ship acquired=
|Ship commissioned=
|Ship decommissioned=
|Ship refit=
|Ship struck=
|Ship homeport=
|Ship identification=
|Ship motto=
|Ship nickname=
|Ship honours=
|Ship fate=Incomplete, captured by German on 14 May 1940
|Ship notes=
|Ship badge=
}}
{{Infobox ship career
|Hide header=title
|Ship country=[[Nazi Germany]]
|Ship country=[[Nazi Germany]]
|Ship flag={{shipboxflag|Nazi Germany|naval}}
|Ship flag={{shipboxflag|Nazi Germany|naval}}
|Ship name=''U-D4''
|Ship name=''UD-4''
|Ship namesake=
|Ship namesake=
|Ship ordered=
|Ship ordered=
|Ship awarded=
|Ship awarded=
|Ship builder=
|Ship builder=''[[Rotterdamsche Droogdok Maatschappij]]'', [[Rotterdam]]
|Ship original cost=
|Ship original cost=
|Ship yard number=
|Ship yard number=
|Ship way number=
|Ship way number=
|Ship laid down=20 April 1939
|Ship laid down=
|Ship launched=23 Novovember 1940
|Ship launched=23 November 1940
|Ship sponsor=
|Ship sponsor=
|Ship christened=
|Ship christened=
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|Ship nickname=
|Ship nickname=
|Ship honours=
|Ship honours=
|Ship fate= Scuttled 3 May 1945
|Ship fate= Scuttled on 3 May 1945
|Ship notes=
|Ship notes=
|Ship badge=
|Ship badge=
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{{Infobox ship characteristics
{{Infobox ship characteristics
|Hide header=
|Hide header=
|Header caption=<ref>{{cite web |url= http://www.dutchsubmarines.com/classes/class_o21.htm |title=Dutch Submarines: The O 21 submarine class |first= |last= |work=dutchsubmarines.com |year=2012 |accessdate=28 July 2013}}</ref>
|Header caption=<ref>{{cite web |url= http://www.dutchsubmarines.com/classes/class_o21.htm |title=Dutch Submarines: The O 21 submarine class |work=dutchsubmarines.com |year=2012 |access-date=28 July 2013}}</ref>
|Ship class={{Sclass-|O 21|submarine}}
|Ship class={{sclass|O 21|submarine}}
|Ship type=
|Ship type=
|Ship displacement=*990&nbsp;tons surfaced
|Ship displacement=*990&nbsp;tons surfaced
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|Ship propulsion=*2 × {{convert|2500|PS|bhp kW|0|abbr=on}} [[diesel engine]]s
|Ship propulsion=*2 × {{convert|2500|PS|bhp kW|0|abbr=on}} [[diesel engine]]s
* 2 × {{convert|500|PS|bhp kW|0|abbr=on}} [[electric motor]]s
* 2 × {{convert|500|PS|bhp kW|0|abbr=on}} [[electric motor]]s
|ship speed=*{{convert|19.5|kn|lk=in}} surfaced
|Ship speed=*{{convert|19.5|kn|lk=in}} surfaced
* {{convert|9|kn}} submerged
* {{convert|9|kn}} submerged
|Ship range=*{{convert|10000|nmi|abbr=on|lk=in}} at {{convert|12|kn}} surfaced
|Ship range=*{{convert|10000|nmi|abbr=on|lk=in}} at {{convert|12|kn}} surfaced
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* 2 × 21 in (1×2) external-traversing TT amidships
* 2 × 21 in (1×2) external-traversing TT amidships
|Ship notes=
|Ship notes=
}}
{{Infobox service record
|is_ship=yes
|label=Service record as ''UD-4''<ref name="uboatnet">{{cite web
|url=http://uboat.net/boats/foreign_ud4.htm
|title= Foreign U-boats UD-4
|last=Helgason
|first=Guðmundur
|website=German U-boats of WWII - uboat.net
|access-date=30 April 2015
}}</ref>
|partof=
*[[1st U-boat Flotilla]]
*January – April 1941
*[[3rd U-boat Flotilla]]
*May – July 1941
*[[5th U-boat Flotilla]]
*August 1941 – December 1942
*[[27th U-boat Flotilla]]
*January 1943 – November 1944
*[[24th U-boat Flotilla]]
*November 1944 – January 1945
*[[18th U-boat Flotilla]]
*January – March 1945
|codes=M 30 414
|commanders=
*''[[K.Kapt.]]'' [[Helmut Brümmer-Patzig]]<ref>{{cite web
|url=http://uboat.net/men/commanders/138.html
|title=Helmut Brümmer-Patzig
|last=Helgason
|first=Guðmundur
|website=Uboat.net
|access-date=30 April 2016
}}</ref>
*28 January – 15 October 1941
*''K.Kapt.'' Rudolf von Singule<ref>{{cite web
|url=http://uboat.net/men/commanders/1197.html
|title=Rudolf von Singule
|last=Helgason
|first=Guðmundur
|website=Uboat.net
|access-date=30 April 2016
}}</ref>
*16 October 1941 – 29 April 1942
*''[[Kptlt.]]'' Hinrich-Oscar Bernbeck<ref>{{cite web
|url=http://uboat.net/men/commanders/77.html
|title=Hinrich-Oscar Bernbeck
|last=Helgason
|first=Guðmundur
|website=Uboat.net
|access-date=30 April 2016
}}</ref>
*30 April – May 1942
*June – 8 December 1942
*''K.Kapt.'' Friedrich Schäfer<ref>{{cite web
|url=http://uboat.net/men/commanders/1059.html
|title=Friedrich Schäfer
|last=Helgason
|first=Guðmundur
|website=Uboat.net
|access-date=30 April 2016
}}</ref>
*23 March 1943 – 22 November 1944
*''[[Oblt.z.S.]] / Kptlt.'' Fritz Bart<ref>{{cite web
|url=http://uboat.net/men/commanders/42.html
|title=Fritz Bart
|last=Helgason
|first=Guðmundur
|website=Uboat.net
|access-date=30 April 2016
}}</ref>
*23 November 1944 – 19 March 1945
|operations=None
|victories=None
}}
}}
|}
|}

'''''U-D4''''' was an {{sclass-|O 21|submarine}}. The boat was [[Keel laying|laid down]] as the Dutch submarine '''''K XXVI''''' and renamed '''''O 26''''' but was captured during [[Battle of the Netherlands|German invasion]] of the Netherlands in [[World War II]] and [[Ship commissioning|commissioned]] in the [[Kriegsmarine]].
'''''UD-4''''' was an {{sclass|O 21|submarine}}. The boat was [[Keel laying|laid down]] as the Dutch submarine '''HNLMS ''K XXVI''''' and renamed '''HNLMS ''O 26''''' but was captured during [[German invasion of the Netherlands|German invasion]] of the Netherlands in [[World War II]] and [[Ship commissioning|commissioned]] in the ''[[Kriegsmarine]]''.


==Ship history==
==Ship history==
The submarine was ordered on 24 June 1938 and [[Keel laying|laid down]] on 20 April 1939 as ''K XXVI'' at the ''[[Rotterdamsche Droogdok Maatschappij]]'', [[Rotterdam]]. During construction she was renamed ''O 26''. Following the [[Battle of the Netherlands|German invasion]] of 10 May 1940, the not yet launched ''O 26'' was captured at the yard by the invading forces.<ref name="dutchsubmarines">{{cite web |url= http://www.dutchsubmarines.com/boats/boat_o26.htm |title=Dutch Submarines: The submarine O 26 |first= |last= |work=dutchsubmarines.com |year=2012 |accessdate=28 July 2013}}</ref>
The submarine was ordered on 24 June 1938 and [[Keel laying|laid down]] on 20 April 1939 as ''K XXVI'' at the ''[[Rotterdamsche Droogdok Maatschappij]]'', [[Rotterdam]]. During construction she was renamed ''O 26''. Following the [[Battle of the Netherlands|German invasion]] of 10 May 1940, the not yet launched ''O 26'' was captured at the yard by the invading forces.<ref name="dutchsubmarines">{{cite web |url= http://www.dutchsubmarines.com/boats/boat_o26.htm |title=Dutch Submarines: The submarine O 26 |work=dutchsubmarines.com |year=2012 |access-date=28 July 2013}}</ref>


The Germans decided to complete her. The launch took place on 23 November 1940. She served in the ''Kriegsmarine'' as ''U-D4'' and was [[Ship commissioning|commissioned]] on 28 January 1941.<ref name="dutchsubmarines"/>
The Germans decided to complete her. The launch took place on 23 November 1940. She served in the ''Kriegsmarine'' as ''UD-4'' and was [[Ship commissioning|commissioned]] on 28 January 1941,<ref name="dutchsubmarines"/> with ''[[Korvettenkapitän]]'' [[Helmut Brümmer-Patzig]] in command.{{sfn|Busch|Röll|1999|p=41}}


[[File:Onderzeeboot O 26 (UD-4) in de Arsenaalhaven te Kiel, Duitsland (2158 015574).jpg|thumb|left|''UD-4'' among other types in the heavily damaged port of Kiel, April 1945.]]
From January to April 1941 ''U-D4'' served as school boat in [[Kiel]] when attached to the [[1st U-boat Flotilla|1st Flotilla]]. In May she was transferred to the [[3rd U-boat Flotilla|3rd Flotilla]] also in Kiel where she was used as a trial boat. She remained there until July that year. August 1941 the boat was transferred to the [[5th U-boat Flotilla|5th Flotilla]] also in Kiel where she was used as a school boat until December 1942. In January 1943 ''U-D4'' was transferred to [[Gdynia|Gotenhafen]] where she served as a school boat for [[24th U-boat Flotilla|24th Flotilla]] and [[27th U-boat Flotilla|27th Flotilla]] until January 1945. From January to March 1945 she was based in [[Hel, Poland|Hela]] and transferred to the [[18th U-boat Flotilla|18th Flotilla]] where she served as a school boat.<ref name="dutchsubmarines"/>
From January to April 1941, ''UD-4'' served as school boat in [[Kiel]] when attached to the [[1st U-boat Flotilla|1st Flotilla]]. In May, she was transferred to the [[3rd U-boat Flotilla|3rd Flotilla]] also in Kiel where she was used as a trial boat. She remained there until July that year. In August 1941, the boat was transferred to the [[5th U-boat Flotilla|5th Flotilla]] also in Kiel where she was used as a school boat until December 1942. In January 1943, ''UD-4'' was transferred to [[Gdynia|Gotenhafen]] where she served as a school boat for [[24th U-boat Flotilla|24th Flotilla]] and [[27th U-boat Flotilla|27th Flotilla]] until January 1945. From January to March 1945, she was based in [[Hel, Poland|Hela]] and transferred to the [[18th U-boat Flotilla|18th Flotilla]] where she served as a school boat.<ref name="dutchsubmarines"/>


19 March 1945 ''U-D4'' was decommissioned and on 3 May 1945 the boat was scuttled in Kiel.<ref name="dutchsubmarines"/>
On 19 March 1945, ''UD-4'' was decommissioned. On 3 May 1945, she was scuttled in Kiel.<ref name="dutchsubmarines"/>


==References==
==References==
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==Bibliography==
==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 = 978-1-55750-186-8 }}
*{{cite book
*{{cite book
|last1=Gröner
|last1=Gröner
|first1=Erich
|first1=Erich
|author-link1=
|author-mask1=
|last2=Jung
|last2=Jung
|first2=Dieter
|first2=Dieter
|display-authors=
|last-author-amp=
|last3=Maass
|last3=Maass
|first3=Martin
|first3=Martin
Line 91: Line 196:
|translator-first2=Rachel
|translator-first2=Rachel
|year=1991
|year=1991
|title=U-boats and Mine Warfare Vessels
|title=German Warships 1815–1945, U-boats and Mine Warfare Vessels
|volume=2
|volume=2
|work=German Warships 1815–1945
|location=London
|location=London
|publisher=Conway Maritime Press
|publisher=Conway Maritime Press
|isbn=0-85177-593-4
|isbn=978-0-85177-593-7
|ref=CITEREFGröner1991
|ref=CITEREFGr.C3.B6ner1991
}}
}}


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{{May 1940 shipwrecks}}
{{May 1940 shipwrecks}}
{{May 1945 shipwrecks}}
{{May 1945 shipwrecks}}
{{Subject bar
| portal1=Military of Germany
| portal2=Submarine
| portal3=World War II
}}


{{DEFAULTSORT:U-D4}}
{{DEFAULTSORT:UD-4}}
[[Category:1940 ships]]
[[Category:1940 ships]]
[[Category:Ships built in the Netherlands]]
[[Category:World War II submarines of the Netherlands]]
[[Category:World War II submarines of the Netherlands]]
[[Category:World War II submarines of Germany]]
[[Category:World War II submarines of Germany]]
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[[Category:Maritime incidents in May 1945]]
[[Category:Maritime incidents in May 1945]]
[[Category:Operation Regenbogen (U-boat)]]
[[Category:Operation Regenbogen (U-boat)]]
[[Category:Submarines built by Rotterdamsche Droogdok Maatschappij]]

Latest revision as of 09:04, 17 February 2024

History
Netherlands
NameHNLMS O 26
Ordered24 June 1938
BuilderRotterdamsche Droogdok Maatschappij, Rotterdam
Laid down20 April 1939
FateIncomplete, captured by German on 14 May 1940
Nazi Germany
NameUD-4
Launched23 November 1940
Commissioned28 January 1941
Decommissioned19 March 1945
FateScuttled on 3 May 1945
General characteristics [1]
Class and typeO 21-class submarine
Displacement
  • 990 tons surfaced
  • 1205 tons submerged
Length77.70 m (254 ft 11 in)
Beam6.80 m (22 ft 4 in)
Draught3.95 m (13 ft 0 in)
Propulsion
Speed
  • 19.5 knots (36.1 km/h; 22.4 mph) surfaced
  • 9 knots (17 km/h; 10 mph) submerged
Range
  • 10,000 nmi (19,000 km; 12,000 mi) at 12 knots (22 km/h; 14 mph) surfaced
  • 28 nmi (52 km; 32 mi) at 8.5 knots (15.7 km/h; 9.8 mph) submerged
Complement39
Armament
  • 4 × 21 in (533 mm) bow torpedo tubes
  • 2 × 21 in stern torpedo tubes
  • 2 × 21 in (1×2) external-traversing TT amidships
Service record as UD-4[2]
Part of:
Identification codes: M 30 414
Commanders:
  • K.Kapt. Helmut Brümmer-Patzig[3]
  • 28 January – 15 October 1941
  • K.Kapt. Rudolf von Singule[4]
  • 16 October 1941 – 29 April 1942
  • Kptlt. Hinrich-Oscar Bernbeck[5]
  • 30 April – May 1942
  • June – 8 December 1942
  • K.Kapt. Friedrich Schäfer[6]
  • 23 March 1943 – 22 November 1944
  • Oblt.z.S. / Kptlt. Fritz Bart[7]
  • 23 November 1944 – 19 March 1945
Operations: None
Victories: None

UD-4 was an O 21-class submarine. The boat was laid down as the Dutch submarine HNLMS K XXVI and renamed HNLMS O 26 but was captured during German invasion of the Netherlands in World War II and commissioned in the Kriegsmarine.

Ship history

[edit]

The submarine was ordered on 24 June 1938 and laid down on 20 April 1939 as K XXVI at the Rotterdamsche Droogdok Maatschappij, Rotterdam. During construction she was renamed O 26. Following the German invasion of 10 May 1940, the not yet launched O 26 was captured at the yard by the invading forces.[8]

The Germans decided to complete her. The launch took place on 23 November 1940. She served in the Kriegsmarine as UD-4 and was commissioned on 28 January 1941,[8] with Korvettenkapitän Helmut Brümmer-Patzig in command.[9]

UD-4 among other types in the heavily damaged port of Kiel, April 1945.

From January to April 1941, UD-4 served as school boat in Kiel when attached to the 1st Flotilla. In May, she was transferred to the 3rd Flotilla also in Kiel where she was used as a trial boat. She remained there until July that year. In August 1941, the boat was transferred to the 5th Flotilla also in Kiel where she was used as a school boat until December 1942. In January 1943, UD-4 was transferred to Gotenhafen where she served as a school boat for 24th Flotilla and 27th Flotilla until January 1945. From January to March 1945, she was based in Hela and transferred to the 18th Flotilla where she served as a school boat.[8]

On 19 March 1945, UD-4 was decommissioned. On 3 May 1945, she was scuttled in Kiel.[8]

References

[edit]
  1. ^ "Dutch Submarines: The O 21 submarine class". dutchsubmarines.com. 2012. Retrieved 28 July 2013.
  2. ^ Helgason, Guðmundur. "Foreign U-boats UD-4". German U-boats of WWII - uboat.net. Retrieved 30 April 2015.
  3. ^ Helgason, Guðmundur. "Helmut Brümmer-Patzig". Uboat.net. Retrieved 30 April 2016.
  4. ^ Helgason, Guðmundur. "Rudolf von Singule". Uboat.net. Retrieved 30 April 2016.
  5. ^ Helgason, Guðmundur. "Hinrich-Oscar Bernbeck". Uboat.net. Retrieved 30 April 2016.
  6. ^ Helgason, Guðmundur. "Friedrich Schäfer". Uboat.net. Retrieved 30 April 2016.
  7. ^ Helgason, Guðmundur. "Fritz Bart". Uboat.net. Retrieved 30 April 2016.
  8. ^ a b c d "Dutch Submarines: The submarine O 26". dutchsubmarines.com. 2012. Retrieved 28 July 2013.
  9. ^ Busch & Röll 1999, p. 41.

Bibliography

[edit]
  • Busch, Rainer; Röll, Hans-Joachim (1999). German U-boat commanders of World War II : a biographical dictionary. Translated by Brooks, Geoffrey. London, Annapolis, Md: Greenhill Books, Naval Institute Press. ISBN 978-1-55750-186-8.
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). German Warships 1815–1945, U-boats and Mine Warfare Vessels. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 978-0-85177-593-7.
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