SM UB-125

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For other ships with the same name, see German submarine U-125.
UB 148 at sea 2.jpeg
UB-148 at sea, a U-boat similar to UB-125.
History
German Empire
Name: UB-125
Ordered: 6/8 February 1917[1]
Builder: AG Weser, Bremen
Cost: 3,654,000 German Papiermark
Yard number: 298
Launched: 16 April 1918[2]
Commissioned: 18 May 1918[2]
Fate: Surrendered 20 November 1918.[2]
History
Japan
Name: O 6
Commissioned: 1920[2]
Decommissioned: 1921[2]
Fate: broken up in Kure.[2]
General characteristics [2]
Class & type: German Type UB III submarine
Displacement:
  • 512 t (504 long tons) surfaced
  • 643 t (633 long tons) submerged
Length: 55.85 m (183 ft 3 in) (o/a)
Beam: 5.80 m (19.0 ft)
Draught: 3.72 m (12 ft 2 in)
Propulsion:
Speed:
  • 13.9 knots (25.7 km/h; 16.0 mph) surfaced
  • 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range:
  • 7,280 nmi (13,480 km; 8,380 mi) at 6 knots (11 km/h; 6.9 mph) surfaced
  • 55 nmi (102 km; 63 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth: 50 m (160 ft)
Complement: 3 officers, 31 men[2]
Armament:
Service record
Part of:
  • III Flotilla
  • 21 July – 11 November 1918
Commanders:
  • Kptlt. Fritz Schubert[3]
  • 18 May – 20 July 1918
  • Oblt.z.S. Werner Vater[4]
  • 21 July – 11 November 1918
Operations: 2 patrols
Victories:
  • 6 merchant ships sunk (13,307 GRT)
  • 1 merchant ship damaged (6,082 GRT)

SM UB-125 was a German Type UB III submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 18 May 1918 as SM UB-125.[Note 1]

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.[2]

Construction

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Main article: 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 10.5 cm (4.13 in) deck gun. UB-125 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,280 nautical miles (13,480 km; 8,380 mi). UB-125 had a displacement of 512 t (504 long tons) while surfaced and 643 t (633 long tons) when submerged. Her engines enabled her to travel at 13.9 knots (25.7 km/h; 16.0 mph) when surfaced and 7.6 knots (14.1 km/h; 8.7 mph) when submerged.

Summary of raiding history

Date Name Nationality Tonnage[Note 2] Fate[5]
29 August 1918 Atxeri Mendi  Spain 2,424 Sunk
30 August 1918 Onega  United States 3,636 Sunk
1 September 1918 Actor  United Kingdom 6,082 Damaged
3 September 1918 Brava  Portugal 3,184 Sunk
3 September 1918 Lake Owens  United States 2,308 Sunk
4 September 1918 Bogstad  Norway 1,589 Sunk
12 September 1918 Skjold  Denmark 166 Sunk

References

Notes

  1. ↑ "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.
  2. ↑ Tonnages are in gross register tons

Citations

  1. ↑ Rössler 1979, p. 55.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Gröner 1991, pp. 25-30.
  3. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.

Bibliography

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