SM UB-72

UB-148 at sea, a U-boat similar to UB-72.
History
German Empire
Name:	UB-72
Ordered:	23 September 1916
Builder:	AG Vulcan, Hamburg
Cost:	3,337,000 German Papiermark
Yard number:	96
Launched:	30 July 1917
Commissioned:	9 September 1917
Fate:	Sunk 12 May 1918 at 50°8′N 2°41′W / 50.133°N 2.683°W / 50.133; -2.683Coordinates: 50°8′N 2°41′W / 50.133°N 2.683°W / 50.133; -2.683 by British submarine.
General characteristics
Class and type:	German Type UB III submarine
Displacement:	508 t (500 long tons) surfaced 639 t (629 long tons) submerged
Length:	55.52 m (182 ft 2 in) (o/a)
Beam:	5.76 m (18 ft 11 in)
Draught:	3.70 m (12 ft 2 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:	13.4 knots (24.8 km/h; 15.4 mph) surfaced 7.5 knots (13.9 km/h; 8.6 mph) submerged
Range:	8,420 nmi (15,590 km; 9,690 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:	V Flotilla 28 October 1916 – 25 April 1917 II Flotilla 25 April 1917 – 12 May 1918
Commanders:	Kptlt. Walter Creutzfeld 9 September 1917 – 1 March 1918 Oblt.z.S. Friedrich Traeger 2 March – 12 May 1918
Operations:	5 patrols
Victories:	5 merchant ships sunk (10,551 GRT) 1 merchant ships damaged (3,358 GRT)

SM UB-72 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 9 September 1917 as SM UB-72.

UB-72 was serving in the English Channel when she was sunk by a torpedo from HMS D4 at 50°8′N 2°41′W / 50.133°N 2.683°W / 50.133; -2.683 on 12 May 1918.

She was built by AG Vulcan of Hamburg and following just under a year of construction, launched at Hamburg on 30 July 1917. UB-72 was commissioned later that same year . Like all Type UB III submarines, UB-72 carried 10 torpedoes and was armed with a 8.8 cm (3.46 in) deck gun. UB-72 would carry a crew of up to 3 officer and 31 men and had a cruising range of 8,420 nautical miles (15,590 km; 9,690 mi). UB-72 had a displacement of 508 t (500 long tons) while surfaced and 639 t (629 long tons) when submerged. Her engines enabled her to travel at 13.4 knots (24.8 km/h; 15.4 mph) when surfaced and 7.5 knots (13.9 km/h; 8.6 mph) when submerged.