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SM UB-122

Coordinates: 51°25′51″N 0°37′55″E / 51.4307°N 0.6319°E / 51.4307; 0.6319
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UB-148 at sea, a U-boat similar to UB-122.
History
German Empire
NameUB-122
Ordered6/8 February 1917[2]
BuilderAG Weser, Bremen
Cost3,654,000 German Papiermark
Yard number295
Launched2 February 1918[1]
Commissioned4 March 1918[1]
FateSurrendered 24 November 1918.[1]
General characteristics [1]
Class and typeGerman Type UB III submarine
Displacement
  • 512 t (504 long tons) surfaced
  • 643 t (633 long tons) submerged
Length55.85 m (183 ft 3 in) (o/a)
Beam5.80 m (19 ft)
Draught3.72 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 depth50 m (160 ft)
Complement3 officers, 31 men[1]
Armament
Service record
Part of:
  • III Flotilla
  • 7 July – 11 November 1918
Commanders:
  • Oblt.z.S. Alexander Magnus[3]
  • 4 March – 11 November 1918
Operations: 2 patrols
Victories: None

SM UB-122 was a German Type UB III submarine or U-boat in the German Imperial Navy (‹See Tfd›German: Kaiserliche Marine) during World War I. She was commissioned into the German Imperial Navy on 4 March 1918 as SM UB-122.[Note 1]

UB-122 was surrendered to the British on 24 November 1918 in accordance with the requirements of the Armistice with Germany. She was marooned on a sandbank[4] at Hoo on the River Medway,[5]

Construction

She was built by AG Weser of Bremen and following just under a year of construction, launched at Bremen on 4 March 1918. UB-122 was commissioned later the same year under the command of Oblt.z.S. Alexander Magnus. Like all Type UB III submarines, UB-122 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-122 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-122 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.

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.

Citations

  1. ^ a b c d e Gröner 1991, pp. 25–30.
  2. ^ Rössler 1979, p. 55.
  3. ^ Helgason, Guðmundur. "WWI U-boat commanders: Alexander Magnus". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 10 March 2015.
  4. ^ Wreck location shown on Google Maps https://maps.google.co.uk/maps?q=51.430667,0.631983&hl=en&ll=51.430636,0.632014&spn=0.000741,0.002382&sll=52.8382,-2.327815&sspn=5.88034,19.511719&t=h&z=19
  5. ^ Historic wreckage of German First World War U-boat revealed in low tide

Bibliography

51°25′51″N 0°37′55″E / 51.4307°N 0.6319°E / 51.4307; 0.6319