SM UB-112

For other ships with the same name, see German submarine U-112.

History
UB-148 at sea, a U-boat similar to UB-112.
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, broken up^[2]
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 (19.0 ft)
Draught:	3.70 m (12 ft 2 in)
Propulsion:	2 × propeller shaft 2 × MAN-Vulcan four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW) 2 × Maffei electric motors, 780 shp (580 kW)
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:	5 × 50 cm (19.7 in) torpedo tubes (4 bow, 1 stern) 10 torpedoes 1 × 8.8 cm (3.46 in) deck gun
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)

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]}

UB-112 was surrendered to Britain on 24 November 1918 in accordance with the requirements of the Armistice with Germany and broken up in Falmouth in 1921.^[2]

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^[4]
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

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

Citations

↑ Rössler 1979, p. 66.
1 2 3 4 5 6 Gröner 1991, pp. 25-30.
↑ 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.
↑ 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.
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.

German Type UB III submarines

SM UB-48 SM UB-49 SM UB-50 SM UB-51 SM UB-52 SM UB-53 SM UB-54 SM UB-55 SM UB-56 SM UB-57 SM UB-58 SM UB-59 SM UB-60 SM UB-61 SM UB-62 SM UB-63 SM UB-64 SM UB-65 SM UB-66 SM UB-67 SM UB-68 SM UB-69 SM UB-70 SM UB-71 SM UB-72 SM UB-73 SM UB-74 SM UB-75 SM UB-76 SM UB-77 SM UB-78 SM UB-79 SM UB-80 SM UB-81 SM UB-82 SM UB-83 SM UB-84 SM UB-85 SM UB-86 SM UB-87 SM UB-88 SM UB-89 SM UB-90 SM UB-91 SM UB-92 SM UB-93 SM UB-94 SM UB-95 SM UB-96 SM UB-97 SM UB-98 SM UB-99 SM UB-100 SM UB-101 SM UB-102 SM UB-103 SM UB-104 SM UB-105 SM UB-106 SM UB-107 SM UB-108 SM UB-109 SM UB-110 SM UB-111 SM UB-112 SM UB-113 SM UB-114 SM UB-115 SM UB-116 SM UB-117 SM UB-118 SM UB-119 SM UB-120 SM UB-121 SM UB-122 SM UB-123 SM UB-124 SM UB-125 SM UB-126 SM UB-127 SM UB-128 SM UB-129 SM UB-130 SM UB-131 SM UB-132 SM UB-133 SM UB-136 SM UB-142 SM UB-143 SM UB-144 SM UB-145 SM UB-148 SM UB-149 SM UB-150 SM UB-154 SM UB-155

Preceded by: Type UB II Followed by: Type VII (World War II)

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