SM UB-120

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UB-148 at sea, a U-boat similar to UB-120.
Career (German Empire)
Name: UB-120
Ordered: 6/8 February 1917[1]
Builder: AG Weser, Bremen[2]
Cost: 3,654,000 German Papiermark[2]
Yard number: 293[2]
Launched: 23 February 1918[3]
Commissioned: 23 March 1918[3]
Fate: Surrendered 24 November 1918.[3]
General characteristics
Class & type: German Type UB III submarine
Type: Coastal submarine
Displacement: 512 t (504 long tons; 564 short tons) surfaced
643 t (633 long tons; 709 short tons) submerged[2]
Length: 55.85 m (183.2 ft) o/a[2]
Beam: 5.8 m (19 ft)[2]
Draught: 3.72 m (12.2 ft)[2]
Propulsion: 2 shafts
6-cylinder Daimler diesel engines,[4] 1,060 ihp (790 kW)
Brown, Boveri & Cie[4] electric motors, 788 ihp (588 kW)[2]
Speed: 13.9 knots (25.7 km/h; 16.0 mph) surfaced
7.6 knots (14.1 km/h; 8.7 mph) submerged[2]
Range: 7,280 nmi (13,480 km; 8,380 mi) at 6 kn (11 km/h; 6.9 mph) surfaced
55 nmi (102 km; 63 mi) at 4 kn (7.4 km/h; 4.6 mph) submerged[2]
Test depth: 50 m (160 ft)[4]
Complement: 3 officers, 31 men[4]
Armament: • 5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) with 10 torpedoes
• 1 × 8.8 cm (3.46 in) deck gun[4]
Service record
Part of:

German Imperial Navy[2]

Commanders:

SM UB-120 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 23 March 1918 as SM UB-120.[nb 1]

UB-120 was surrendered to the British on 24 November 1918 in accordance with the requirements of the Armistice with Germany. She was broken up in Swansea in 1922[3]

Construction

She was built by AG Weser of Bremen[2] and following just under a year of construction, launched at Bremen on 23 February 1918. UB-120 was commissioned later the same year . Like all Type UB III submarines, UB-120 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-120 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).[2] UB-120 had a displacement of 512 t (504 long tons; 564 short tons) while surfaced and 643 t (633 long tons; 709 short 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.[2]


Notes

Footnotes
  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. Rössler 1979, p. 55.
  2. 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 2.10 2.11 2.12 2.13 Gröner 1985, p. 52.
  3. 3.0 3.1 3.2 3.3 Gröner 1985, p. 55.
  4. 4.0 4.1 4.2 4.3 4.4 Gröner 1985, p. 53.


References

  • Gröner, Erich (1985). "U-Boote, Hilfskreuzer, Minenschiffe, Netzleger, Sperrbrecher". Die deutschen Kriegsschiffe, 1815-1945 III (Koblenz: Bernhard&Graefe). ISBN 3-7637-4802-4. 
  • Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal. Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7. 
  • Rössler, Eberhard (1979). "U-Bootbau bis Ende des 1. Weltkrieges, Konstruktionen für das Ausland und die Jahre 1935 - 1945". Die deutschen U-Boote und ihre Werften I (Munich: Bernhard&Graefe). ISBN 3-7637-5213-7. 
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