SM UB-71

	UB-148 at sea, a U-boat similar to UB-71.
History
German Empire
Name	UB-71
Ordered	20 May 1916
Builder	Friedrich Krupp Germaniawerft, Kiel
Cost	3,276,000 German Papiermark
Yard number	289
Launched	12 July 1917
Commissioned	23 November 1917
Fate	Sunk 21 April 1918 by depth charges off Menorca (35°58′N 5°18′E / 35.967°N 5.300°E) by British warship, 32 dead
General characteristics
Class and type	Type UB III submarine
Displacement	513 t (505 long tons) surfaced; 647 t (637 long tons) submerged;
Length	55.83 m (183 ft 2 in) (o/a)
Beam	5.80 m (19 ft)
Draught	3.67 m (12 ft 0 in)
Propulsion	2 × propeller shaft; 2 × MAN four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW); 2 × Siemens-Schuckert electric motors, 780 shp (580 kW);
Speed	13.2 knots (24.4 km/h; 15.2 mph) surfaced; 7.6 knots (14.1 km/h; 8.7 mph) submerged;
Range	9,090 nmi (16,830 km; 10,460 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:	I Flotilla; Unknown – 21 April 1918;
Commanders:	Kptlt. Kurt Schapler; 23 November 1917 – 21 April 1918;
Operations:	1 patrol
Victories:	None

SM UB-71 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 23 November 1917 as SM UB-71.^{[Note 1]}

UB-71 was serving in the Mediterranean when she was sunk by depth charges from HMS ML413 off Menorca on 21 April 1918.^[2]

Construction

She was built by Friedrich Krupp Germaniawerft of Kiel and following just under a year of construction, launched at Kiel on 12 July 1917. UB-71 was commissioned later that same year under the command of Kptlt. Kurt Schapler. Like all Type UB III submarines, UB-71 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-71 would carry a crew of up to 3 officer and 31 men and had a cruising range of 9,090 nautical miles (16,830 km; 10,460 mi). UB-71 had a displacement of 513 t (505 long tons) while surfaced and 647 t (637 long tons) when submerged. Her engines enabled her to travel at 13.2 knots (24.4 km/h; 15.2 mph) when surfaced and 7.6 knots (14.1 km/h; 8.7 mph) when submerged.

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.

Citations

^ Rössler 1979, p. 28.
^ ^a ^b ^c ^d ^e ^f Gröner 1991, pp. 25–30.
^ Helgason, Guðmundur. "WWI U-boat commanders: Kurt Schapler". 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.
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.

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

[FOOTNOTERössler197928-1] Rössler 1979, p. 28.

[FOOTNOTEGröner199125–30-2] ^ ^a ^b ^c ^d ^e ^f Gröner 1991, pp. 25–30.

[3] Helgason, Guðmundur. "WWI U-boat commanders: Kurt Schapler". German and Austrian U-boats of World War I - Kaiserliche Marine - Uboat.net. Retrieved 8 March 2015.

[1]

[2]

[3]

[Note 1]

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 April 1918
Shipwrecks	1 Apr: HMS Falcon 3 Apr: AG-11, AG-12, AG-16, HMS E1, HMS E9 4 Apr: HMS Bittern, HMS C26, HMS E8 5 Apr: HMS C27, HMS C35 7 Apr: Rye 8 Apr: HMS E19 10 Apr: Benedetto Cairoli, Faulx 11 Apr: USS Mary B. Garner, UB-33 17 Apr: UB-82 19 Apr: UB-78 21 Apr: UB-71 22 Apr: Prinz August Wilhelm, UB-55 23 Apr: HMS Brilliant, HMS C3, HMS Sirius, HMS Thetis 25 Apr: U-104 29 Apr: Priarial 30 Apr: UB-85
Other incidents	10 Apr: Mangini, Giacinto Carini 11 Apr: HMS King Alfred, SMS Rheinland 23 Apr: Brussels
1917 1918 1919 March 1918 May 1918