German submarine U-748

History

Nazi Germany
Name	U-748
Ordered	25 August 1941
Builder	Schichau-Werke, Danzig
Yard number	1558
Laid down	20 August 1942
Launched	13 May 1943
Commissioned	31 July 1943
Fate	Scuttled on 5 May 1945
General characteristics
Class & type	Type VIIC submarine
Displacement	769 tonnes (757 long tons) surfaced 871 t (857 long tons) submerged
Length	67.10 m (220 ft 2 in) o/a 50.50 m (165 ft 8 in) pressure hull
Beam	6.20 m (20 ft 4 in) o/a 4.70 m (15 ft 5 in) pressure hull
Height	9.60 m (31 ft 6 in)
Draught	4.74 m (15 ft 7 in)
Installed power	2,800–3,200 PS (2,100–2,400 kW; 2,800–3,200 bhp) (diesels) 750 PS (550 kW; 740 shp) (electric)
Propulsion	2 shafts 2 × diesel engines 2 × electric motors
Speed	17.7 knots (32.8 km/h; 20.4 mph) surfaced 7.6 knots (14.1 km/h; 8.7 mph) submerged
Range	8,500 nmi (15,700 km; 9,800 mi) at 10 knots (19 km/h; 12 mph) surfaced 80 nmi (150 km; 92 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	230 m (750 ft) Crush depth: 250–295 m (820–968 ft)
Complement	4 officers, 40–56 enlisted
Armament	5 × 53.3 cm (21 in) torpedo tubes (four bow, one stern) 14 × torpedoes 1 × 8.8 cm (3.46 in) deck gun (220 rounds) 2 × twin 2 cm (0.79 in) C/30 anti-aircraft guns
Service record
Part of:	8th U-boat Flotilla 31 July – 8 September 1943 24th U-boat Flotilla 6 October 1943 – 1 April 1945 31st U-boat Flotilla 1 April – 5 May 1945
Identification codes:	M 55 456
Commanders:	C.C. Mario Arillo 31 July – 8 September 1943 Oblt.z.S. Götz Roth 6 October 1943 – 17 September 1944 Oblt.z.S. Joachim Knecht 18 September – 29 November 1944 Oblt.z.S. Hans-Friedrich Puschmann 30 November 1944 – 20 April 1945 Oblt.z.S. Gottfried Dingler 21 April – 5 May 1945
Operations:	1 patrol: a. 5 – 7 July 1944 b. 11 – 12 July 1944
Victories:	None

German submarine U-748 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine built for service during World War II. Her keel was laid down on 20 August 1942 by Schichau-Werke of Danzig. She was commissioned on 31 July 1943 with Capitano di Corvetta Mario Arillo in command.