SM UB-24

SM UB-24 was a German Type UB II submarine or U-boat in the German Imperial Navy (German: Kaiserliche Marine) during World War I. The U-boat was ordered on 30 April 1915 and launched on 18 October 1915. She was commissioned into the German Imperial Navy on 18 November 1915 as SM UB-24.[Note 1] The submarine was surrendered to France in accordance with the requirements of the Armistice with Germany on 24 November 1918 and broken up in Cherbourg in July 1921.

For other ships with the same name, see German submarine U-24.

SM UB-45, a u-boat similar to UB-24
History
German Empire
Name:	UB-24
Ordered:	30 April 1915[1]
Builder:	AG Weser, Bremen[1]
Cost:	1,291,000 German Papiermark
Yard number:	238[1]
Launched:	18 October 1915[1]
Commissioned:	18 November 1915
Fate:	surrendered 24 November 1918
General characteristics [2]
Class and type:	German Type UB II submarine
Displacement:	265 t (261 long tons) surfaced 291 t (286 long tons) submerged
Length:	36.13 m (118 ft 6 in) o/a 27.13 m (89 ft) pressure hull
Beam:	4.36 m (14 ft 4 in) o/a 3.85 m (13 ft) pressure hull
Draught:	3.66 m (12 ft)
Propulsion:	1 × propeller shaft 2 × 6-cylinder diesel engine, 270 PS (200 kW; 270 bhp) 2 × electric motor, 280 PS (210 kW; 280 shp)
Speed:	8.90 knots (16.48 km/h; 10.24 mph) surfaced 5.72 knots (10.59 km/h; 6.58 mph) submerged
Range:	7,200 nmi (13,300 km; 8,300 mi) at 5 knots (9.3 km/h; 5.8 mph) surfaced 45 nmi (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth:	50 m (160 ft)
Complement:	2 officers, 21 men
Armament:	2 × 50 cm (19.7 in) torpedo tubes 4 × torpedoes (later 6) 1 × 5 cm SK L/40 gun
Notes:	30-second diving time
Service record
Commanders:	Oblt.z.S. Kurt Albrecht[3] 18 November – 12 December 1915
Operations:	No patrols
Victories:	None

Design

A German Type UB II submarine, UB-24 had a displacement of 265 tonnes (261 long tons) when at the surface and 291 tonnes (286 long tons) while submerged. She had a total length of 36.13 m (118 ft 6 in), a beam of 4.36 m (14 ft 4 in), and a draught of 3.66 m (12 ft 0 in). The submarine was powered by two Benz six-cylinder diesel engines producing a total 267 metric horsepower (263 shp; 196 kW), two Siemens-Schuckert electric motor producing 280 metric horsepower (210 kW; 280 shp), and one propeller shaft. She was capable of operating at depths of up to 50 metres (160 ft).[2]

The submarine had a maximum surface speed of 8.90 knots (16.48 km/h; 10.24 mph) and a maximum submerged speed of 5.72 knots (10.59 km/h; 6.58 mph). When submerged, she could operate for 45 nautical miles (83 km; 52 mi) at 4 knots (7.4 km/h; 4.6 mph); when surfaced, she could travel 7,200 nautical miles (13,300 km; 8,300 mi) at 5 knots (9.3 km/h; 5.8 mph). UB-24 was fitted with two 50 centimetres (20 in) torpedo tubes, four torpedoes, and one 5 cm (2.0 in) SK L/40 deck gun. She had a complement of twenty-one crew members and two officers and a thirty-second dive time.[2]

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.

References

1. Rössler 1979, p. 54.
2. Gröner 1991, pp. 23-25.
3. Helgason, Guðmundur. "WWI U-boat commanders: Kurt Albrecht". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 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)