SM UB-124

For other ships with the same name, see German submarine U-124.

History
UB-148 at sea, a U-boat similar to UB-124.
German Empire
Name:	UB-124
Ordered:	6/8 February 1917^[1]
Builder:	AG Weser, Bremen
Cost:	3,654,000 German Papiermark
Yard number:	297
Launched:	19 March 1918^[2]
Commissioned:	22 April 1918^[2]
Fate:	Sunk 20 July 1918 by British warships.^[2]
General characteristics ^[2]
Class and 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:	2 × propeller shaft 2 × Körting four-stroke 6-cylinder diesel engines, 1,050 bhp (780 kW) 2 × Siemens-Schuckert electric motors, 780 shp (580 kW)
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:	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:	III Flotilla 1–20 July 1918
Commanders:	Oblt.z.S. Hans Oscar Wutsdorff^[3] 22 April – 20 July 1918
Operations:	1 patrol
Victories:	1 merchant ship sunk (32,234 GRT)

SM UB-124 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 22 April 1918 as SM UB-124.^{[Note 1]}

UB-124 was sunk on 20 July 1918 by HMS Marne, HMS Milbrook, HMS Pigeon, and more than 30 patrol craft at 55°43′N 7°51′W / 55.717°N 7.850°W / 55.717; -7.850Coordinates: 55°43′N 7°51′W / 55.717°N 7.850°W / 55.717; -7.850.^[2]

Construction

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 19 March 1918. UB-124 was commissioned later the same year under the command of Oblt.z.S. Hans Oscar Wutsdorff. Like all Type UB III submarines, UB-124 carried ten torpedoes and was armed with an 8.8 cm (3.46 in) deck gun. UB-124 would carry a crew of up to three officers and 31 men and had a cruising range of 7,280 nautical miles (13,480 km; 8,380 mi). UB-124 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^[4]
20 July 1918	Justicia	United Kingdom	32,234	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. 55.
1 2 3 4 5 6 Gröner 1991, pp. 25-30.
↑ Helgason, Guðmundur. "WWI U-boat commanders: Hans Oscar Wutsdorff". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 10 March 2015.
↑ Helgason, Guðmundur. "Ships hit by UB 124". 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)

Shipwrecks and maritime incidents in July 1918

Shipwrecks	2 Jul: USS Covington 4 Jul: SM U-20 5 Jul: Columbia 12 Jul: Kawachi 14 Jul: SM UC-77, Djemnah, Waitemata 17 Jul: Carpathia 19 Jul: Australien, USS San Diego, SM UB-110 20 Jul: HMS E34, Justicia, SM UB-124 24 Jul: HMS Pincher Unknown date: USS Oosterdijk, SM UB-65, SM UB-108

Other incidents	1 Jul: USS Covington 6 Jul: HMS C25 19 Jul: Justicia 23 Jul: HMT Boorara, USS N-3 Unknown date: San Jacinto

1917 1918 1919 June 1918 August 1918

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