UB-148 at sea, a U-boat similar to UB-101.
History
German Empire
Name	UB-101
Ordered	6 / 8 February 1917[1]
Builder	AG Vulcan, Hamburg
Cost	3,654,000 German Papiermark
Yard number	117
Launched	27 August 1918[2]
Commissioned	31 October 1918[2]
Fate	Surrendered 26 November 1918, broken up[2]
General characteristics [2]
Class and type	Type UB III submarine
Displacement	510 t (500 long tons) surfaced 640 t (630 long tons) submerged
Length	55.52 m (182 ft 2 in) (o/a)
Beam	5.76 m (18 ft 11 in)
Draught	3.73 m (12 ft 3 in)
Propulsion	2 × propeller shaft 2 × AEG four-stroke 6-cylinder diesel engines, 1,085 bhp (809 kW) 2 × Siemens-Schuckert electric motors, 780 shp (580 kW)
Speed	13 knots (24 km/h; 15 mph) surfaced 7.4 knots (13.7 km/h; 8.5 mph) submerged
Range	7,120 nmi (13,190 km; 8,190 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 × 10.5 cm (4.13 in) deck gun
Service record
Commanders:	Oblt.z.S. Eugen von Beulwitz[3] 31 October – 11 November 1918
Operations:	No patrols
Victories:	None

SM UB-101 was a German Type UB III submarine or U-boat in the Imperial German Navy during World War I. She was commissioned into the Imperial German Navy on 31 October 1918 as SM UB-101.^{[Note 1]}

UB-101 was surrendered on 26 November 1918 and broken up in Felixstowe in 1919/20.^[2]

She was built by AG Vulcan of Hamburg and following just under a year of construction, launched at Hamburg on 27 August 1918. UB-101 was commissioned later the same year under the command of Oblt.z.S. Eugen von Beulwitz. Like all Type UB III submarines, UB-101 carried 10 torpedoes and was armed with a 10.5 cm (4.13 in) deck gun. UB-101 would carry a crew of up to 3 officer and 31 men and had a cruising range of 7,120 nautical miles (13,190 km; 8,190 mi). UB-101 had a displacement of 510 t (500 long tons) while surfaced and 640 t (630 long tons) when submerged. Her engines enabled her to travel at 13 knots (24 km/h; 15 mph) when surfaced and 7.4 knots (13.7 km/h; 8.5 mph) when submerged.

• 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.
• Bendert, Harald (2000). Die UB-Boote der Kaiserlichen Marine, 1914-1918. Einsätze, Erfolge, Schicksal. Hamburg: Verlag E.S. Mittler & Sohn GmbH. ISBN 3-8132-0713-7.
• 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.