SM UB-112

SM UB-112 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 16 April 1918 as SM UB-112.[Note 1]

For other ships with the same name, see German submarine U-112.
UB-148 at sea, a U-boat similar to UB-112.
History
German Empire
Name: UB-112
Ordered: 6/8 February 1917[1]
Builder: Blohm & Voss, Hamburg
Cost: 3,714,000 German Papiermark
Yard number: 318
Launched: 15 September 1917[2]
Commissioned: 16 April 1918[2]
Fate: surrendered 24 November 1918; used for explosive trials and dumped on beach 1920; sold for scrap 1921
General characteristics [2]
Class and type: German Type UB III submarine
Displacement:
  • 519 t (511 long tons) surfaced
  • 649 t (639 long tons) submerged
Length: 55.30 m (181 ft 5 in) (o/a)
Beam: 5.80 m (19 ft)
Draught: 3.70 m (12 ft 2 in)
Propulsion:
Speed:
  • 13.3 knots (24.6 km/h; 15.3 mph) surfaced
  • 7.5 knots (13.9 km/h; 8.6 mph) submerged
Range:
  • 7,420 nmi (13,740 km; 8,540 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:
  • Flanders Flotilla
  • 21 July – 18 October 1918
  • III Flotilla
  • 19 October – 11 November 1918
Commanders:
  • Kptlt. Wilhelm Rhein[3]
  • 16 April – 11 November 1918
Operations: 3 patrols
Victories:
  • 11 merchant ships sunk (10,459 GRT)
  • 1 merchant ship damaged (1,960 GRT)

UB-112 was surrendered to the Allies at Harwich on 24 November 1918 in accordance with the requirements of the Armistice with Germany; she was used for explosives trials off Falmouth on 20 November and 1 December 1920, after which the boat was dumped on Castle Beach. The wreck was sold for scrap to R. Roskelly & Rodgers on 19 April 1921 for £125, but remains survive in situ.[4]

Construction
Main article: German Type UB III submarine

She was built by Blohm & Voss of Hamburg and following just under a year of construction, launched at Hamburg on 15 September 1917. UB-112 was commissioned in the spring the next year under the command of Kptlt. Wilhelm Rhein. Like all Type UB III submarines, UB-112 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-112 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,420 nautical miles (13,740 km; 8,540 mi). UB-112 had a displacement of 519 t (511 long tons) while surfaced and 649 t (639 long tons) when submerged. Her engines enabled her to travel at 13.3 knots (24.6 km/h; 15.3 mph) when surfaced and 7.4 knots (13.7 km/h; 8.5 mph) when submerged.

Summary of raiding history
Date Name Nationality Tonnage[Note 2] Fate[5]
21 August 1918 The Stewart’s Court  United Kingdom 813 Sunk
22 August 1918 Prunelle  United Kingdom 579 Sunk
23 August 1918 Heros  Sweden 351 Sunk
30 September 1918 Atlantico  Portugal 319 Sunk
1 October 1918 Aldebaran  Sweden 1,683 Sunk
1 October 1918 Gjertrud  Norway 593 Sunk
2 October 1918 Bamse  United Kingdom 1,001 Sunk
2 October 1918 Poljames  United Kingdom 856 Sunk
3 October 1918 Atlantis  Norway 1,171 Sunk
3 October 1918 Westwood  United Kingdom 1,968 Sunk
3 October 1918 A.E. Mc Kinstry  Canada 1,960 Damaged
4 October 1918 Nanna  Norway 1,125 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. 66.
  2. Gröner 1991, pp. 25-30.
  3. Helgason, Guðmundur. "WWI U-boat commanders: Wilhelm Rhein (Royal House Order of Hohenzollern)". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 10 March 2015.
  4. Dodson, Aidan; Cant, Serena (2020). Spoils of War: the fate of enemy fleets after the two World Wars,. Barnsley: Seaforth. pp. 50–52, 99, 129. ISBN 978 1 5267 4198 1.
  5. Helgason, Guðmundur. "Ships hit by UB 112". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 10 March 2015.

Bibliography
  • Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal (in German). Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7.CS1 maint: ref=harv (link)
  • Gröner, Erich; Jung, Dieter; Maass, Martin (1991). U-boats and Mine Warfare Vessels. German Warships 1815–1945. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
  • 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 (in German). I. Munich: Bernard & Graefe. ISBN 3-7637-5213-7.CS1 maint: ref=harv (link)

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