German submarine UD-4
{{Short description|German World War II submarine}}
| {{Infobox ship begin}}
{{Infobox ship image |Ship image= |Ship caption=UD-4 }} {{Infobox ship career |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 flag={{shipboxflag|Nazi Germany|naval}} |Ship name=UD-4 |Ship namesake= |Ship ordered= |Ship awarded= |Ship builder= |Ship original cost= |Ship yard number= |Ship way number= |Ship laid down= |Ship launched=23 November 1940 |Ship sponsor= |Ship christened= |Ship completed= |Ship acquired= |Ship commissioned=28 January 1941 |Ship decommissioned=19 March 1945 |Ship refit= |Ship struck= |Ship homeport= |Ship identification= |Ship motto= |Ship nickname= |Ship honours= |Ship fate= Scuttled on 3 May 1945 |Ship notes= |Ship badge= }} {{Infobox ship characteristics |Hide header= |Ship class={{sclass|O 21|submarine}} |Ship type= |Ship displacement=*990 tons surfaced
|Ship length={{convert|77.70|m|ftin|0|abbr=on}} |Ship beam={{convert|6.80|m|ftin|0|abbr=on}} |Ship draught={{convert|3.95|m|ftin|0|abbr=on}} |Ship power= |Ship propulsion=*2 × {{convert|2500|PS|bhp kW|0|abbr=on}} diesel engines
|Ship speed=*{{convert|19.5|kn|lk=in}} surfaced
|Ship range=*{{convert|10000|nmi|abbr=on|lk=in}} at {{convert|12|kn}} surfaced
|Ship test depth= |Ship complement=39 |Ship armament=*4 × {{convert|21|in|mm|0|abbr=on}} bow torpedo tubes
|Ship notes= }} {{Infobox service record |is_ship=yes |label=Service record as UD-4{{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 }} |partof=
|codes=M 30 414 |commanders= |url=http://uboat.net/men/commanders/138.html |title=Helmut Brümmer-Patzig |last=Helgason |first=Guðmundur |website=Uboat.net |access-date=30 April 2016 }}
|url=http://uboat.net/men/commanders/1197.html |title=Rudolf von Singule |last=Helgason |first=Guðmundur |website=Uboat.net |access-date=30 April 2016 }}
|url=http://uboat.net/men/commanders/77.html |title=Hinrich-Oscar Bernbeck |last=Helgason |first=Guðmundur |website=Uboat.net |access-date=30 April 2016 }}
|url=http://uboat.net/men/commanders/1059.html |title=Friedrich Schäfer |last=Helgason |first=Guðmundur |website=Uboat.net |access-date=30 April 2016 }}
|url=http://uboat.net/men/commanders/42.html |title=Fritz Bart |last=Helgason |first=Guðmundur |website=Uboat.net |access-date=30 April 2016 }}
|operations=None |victories=None }} |
UD-4 was an {{sclass|O 21|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
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.{{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}}
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, 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
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.
On 19 March 1945, UD-4 was decommissioned. On 3 May 1945, she was scuttled in Kiel.
References
{{reflist}}
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
|last1=Gröner
|first1=Erich
|last2=Jung
|first2=Dieter
|last3=Maass
|first3=Martin
|translator-last1=Thomas
|translator-first1=Keith
|translator-last2=Magowan
|translator-first2=Rachel
|year=1991
|title=German Warships 1815–1945, U-boats and Mine Warfare Vessels
|volume=2
|location=London
|publisher=Conway Maritime Press
|isbn=978-0-85177-593-7
|ref=CITEREFGröner1991
}}
{{O 21 class submarine}}
{{Foreign U-boats |state=collapsed}}
{{May 1940 shipwrecks}}
{{May 1945 shipwrecks}}
{{DEFAULTSORT:UD-4}}
Category:World War II submarines of the Netherlands
Category:World War II submarines of Germany
Category:O 21-class submarines
Category:Naval ships of the Netherlands captured by Germany during World War II
Category:Maritime incidents in May 1940
Category:Maritime incidents in May 1945
Category:Operation Regenbogen (U-boat)
Category:Submarines built by Rotterdamsche Droogdok Maatschappij