- Construction
- Summary of raiding history
- References Notes Citations
- Bibliography
{{Other ships|German submarine U-125}}{{Infobox ship image| Ship image=UB 148 at sea 2.jpeg | Ship caption=UB-148 at sea, a U-boat similar to UB-125.
}}{{Infobox ship career | Ship country=German Empire | German Empire|naval}} | Ship name=UB-125 | Rössler|1979|p=55}} | Ship builder=AG Weser, Bremen | Ship original cost=3,654,000 German Papiermark | Ship yard number=298 | Ship laid down= | Gröner|1991|pp=25-30}} | Ship completed= | Gröner|1991|pp=25-30}} | Gröner|1991|pp=25-30}}
}}{{Infobox ship career | Ship country=Japan | Japan|naval}} | Ship name=O 6 | Gröner|1991|pp=25-30}} | Gröner|1991|pp=25-30}} | Gröner|1991|pp=25-30}}
}}{{Infobox ship characteristics | Hide header= | Gröner|1991|pp=25-30}} | Ship class=German Type UB III submarine | 512|t|LT|lk=in|abbr=on}} surfaced- {{convert|643|t|LT|abbr=on}} submerged
| 55.85|m|ftin|abbr=on}} (o/a) | 5.80|m|ft|0|abbr=on}} | 3.72|m|ftin|abbr=on}} | Ship propulsion=*2 × propeller shaft- 2 × Körting four-stroke 6-cylinder diesel engines, {{convert|780|kW|bhp|abbr=on|order=flip|lk=in}}
- 2 × Siemens-Schuckert electric motors, {{convert|580|kW|shp|order=flip|abbr=on|lk=in}}
| 13.9|kn|lk=in}} surfaced- {{convert|7.6|kn}} submerged
| 7,280|nmi|lk=in|abbr=on}} at {{convert|6|kn}} surfaced- {{convert|55|nmi|abbr=on}} at {{convert|4|kn}} submerged
| 50|m|ft|abbr=on}} | Gröner|1991|pp=25-30}} | 50|cm|in|1|abbr=on}} torpedo tubes (4 bow, 1 stern)- 10 torpedoes
- 1 × {{convert|10.5|cm|in|2|abbr=on}} deck gun
| Ship notes=
}}{{Infobox service record | is_ship=yes | is_multi=yes | partof=*III Flotilla- 21 July – 11 November 1918
| commanders=*Kptlt. Fritz Schubert[1]- 18 May – 20 July 1918
- Oblt.z.S. Werner Vater[2]
- 21 July – 11 November 1918
| operations=2 patrols | 13,307}})- 1 merchant ship damaged ({{GRT|6,082}})
}} | SM UB-125 was a German Type UB III submarine or U-boat in the German Imperial Navy ({{lang-de|Kaiserliche Marine}}) during World War I. She was commissioned into the German Imperial Navy on 18 May 1918 as SM UB-125.{{#tag:ref|"SM" stands for "Seiner Majestät" ({{lang-en|His Majesty's}}) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.|group=Note}} UB-125 was surrendered 20 November 1918 in accordance with the requirements of the Armistice with Germany. Handed over to Japan, she served as O 6 in the Imperial Japanese Navy until 1921 when she was broken up in Kure.{{sfn|Gröner|1991|pp=25-30}} Construction{{Main|German Type UB III submarine}}She was built by AG Weser of Bremen and following just under a year of construction, launched at Bremen on 16 April 1918. UB-125 was commissioned later the same year under the command of Kptlt. Fritz Schubert. Like all Type UB III submarines, UB-125 carried 10 torpedoes and was armed with a {{convert|10.5|cm|in|2|abbr=on}} deck gun. UB-125 would carry a crew of up to 3 officer and 31 men and had a cruising range of {{convert|7,280|nmi|lk=in}}. UB-125 had a displacement of {{convert|512|t|LT|lk=in|abbr=on}} while surfaced and {{convert|643|t|LT|abbr=on}} when submerged. Her engines enabled her to travel at {{convert|13.9|kn|lk=in}} when surfaced and {{convert|7.6|kn}} when submerged. Summary of raiding history| Date | Name | Nationality | Tonnage[3] | Fate[4] |
|---|
| 29 August 1918 | Atxeri Mendi | {{flag|Spain}} | 2,424 | Sunk | | 30 August 1918 | Onega | {{flag|United States|1912}} | 3,636 | Sunk | | 1 September 1918 | Actor | {{flag|United Kingdom|government}} | 6,082 | Damaged | | 3 September 1918 | Brava | {{flag|Portugal}} | 3,184 | Sunk | | 3 September 1918 | Lake Owens | {{flag|United States|1912}} | 2,308 | Sunk | | 4 September 1918 | Bogstad | {{flag|Norway}} | 1,589 | Sunk | | 12 September 1918 | Skjold | {{flag|Denmark}} | 166 | Sunk |
ReferencesNotes1. ^{{cite Uboat.net|id=308|name=Fritz Schubert|type=1comm|accessdate=11 March 2015}}
2. ^{{cite Uboat.net|id=374|name=Werner Vater|type=1comm|accessdate=11 March 2015}}
3. ^Tonnages are in gross register tons
4. ^{{cite Uboat.net|id=ub125|name=UB 125|type=1boat |accessdate=11 March 2015}}
Citations{{Reflist|colwidth=30em}} Bibliography {{Refbegin}}- {{Cite book| last = Bendert| first = Harald |title=Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal | location = Hamburg | publisher = Verlag E.S. Mittler & Sohn GmbH| year = 2000 | isbn = 3-8132-0713-7 | 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=Rössler|first=Eberhard|title=U-Bootbau bis Ende des 1. Weltkrieges, Konstruktionen für das Ausland und die Jahre 1935 – 1945|work=Die deutschen U-Boote und ihre Werften|volume=I|year=1979|location=Munich|publisher=Bernard & Graefe|isbn=3-7637-5213-7|language=German|ref=harv}}
{{Refend}}{{German Type UB III submarines}}{{Use dmy dates|date=June 2015}}{{DEFAULTSORT:Ub125}} 6 : German Type UB III submarines|World War I submarines of Germany|U-boats commissioned in 1918|1918 ships|Ships built in Bremen (state)|Foreign submarines of the Imperial Japanese Navy |