SM UB-124

	UB-148 at sea, a U-boat similar to UB-124.
History
German Empire
Name	UB-124
Ordered	6 / 8 February 1917
Builder	AG Weser, Bremen
Cost	3,654,000 German Papiermark
Yard number	297
Laid down	10 July 1917
Launched	19 March 1918
Commissioned	22 April 1918
Fate	Sunk 20 July 1918 by British warships
General characteristics
Class and type	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 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
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; 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, Milbrook, Pigeon, and more than 30 patrol craft at 55°43′N 7°51′W / 55.717°N 7.850°W / 55.717; -7.850.^[3]

Construction

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^[5]
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.
^ Helgason, Guðmundur. "WWI U-boats: UB 124". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 13 February 2009.
^ ^a ^b ^c ^d ^e ^f 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. Vol. 2. Translated by Thomas, Keith; Magowan, Rachel. London: Conway Maritime Press. ISBN 0-85177-593-4.
Rössler, Eberhard (1979). Die deutschen U-Boote und ihre Werften: eine Bilddokumentation über den deutschen U-Bootbau; in zwei Bänden (in German). Vol. I. Munich: Bernard & Graefe. ISBN 3-7637-5213-7.

[5] "SM" stands for "Seiner Majestät" (English: His Majesty's) and combined with the U for Unterseeboot would be translated as His Majesty's Submarine.

[tonnage-6] Tonnages are in gross register tons

[FOOTNOTERössler197955-1] Rössler 1979, p. 55.

[UB-124-2] Helgason, Guðmundur. "WWI U-boats: UB 124". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 13 February 2009.

[FOOTNOTEGröner199125–30-3] ^ ^a ^b ^c ^d ^e ^f Gröner 1991, pp. 25–30.

[4] 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.

[7] Helgason, Guðmundur. "Ships hit by UB 124". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 10 March 2015.

[1]

[2]

[3]

[4]

[Note 1]

[Note 2]

[5]

v t e 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)
List of U-boats of Germany

v t e 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 16 Jul: Garibaldino 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, Minnekahda, USS N-3, USS Preble Unknown date: San Jacinto
1917 1918 1919 June 1918 August 1918

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
Laid down	10 July 1917^[2]
Launched	19 March 1918^[3]
Commissioned	22 April 1918^[3]
Fate	Sunk 20 July 1918 by British warships^[3]
General characteristics ^[3]
Class and type	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 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^[3]
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^[4] 22 April – 20 July 1918
Operations:	1 patrol
Victories:	1 merchant ship sunk (32,234 GRT)

SM UB-124

Construction

Summary of raiding history

References

Notes

Citations

Bibliography

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