History
Nazi Germany
Name	U-794
Ordered	7 August 1942[1]
Builder	Germaniawerft, Kiel
Yard number	718
Laid down	1 February 1943[1]
Launched	7 October 1943[1]
Commissioned	14 November 1943[1]
Fate	Scuttled on 5 May 1945, later broken up[1]
General characteristics [2][3]
Class and type	Type XVIIA submarine
Displacement	236 long tons (240 t) surfaced 259 long tons (263 t) submerged 312 long tons (317 t) total
Length	36.60 m (120 ft 1 in) o/a
Beam	4.5 m (14 ft 9 in) o/a 3.4 m (11 ft 2 in) pressure hull
Draught	4.55 m (14 ft 11 in)
Propulsion	1 × Deutz SAA SM517 supercharged 8-cylinder diesel engine, 210 PS (210 shp; 150 kW) 1 × AEG Maschine AWT98 electric motor, 77 PS (76 shp; 57 kW) 2 × Walter gas turbines, 5,000 PS (4,900 shp; 3,700 kW) 1 shaft
Speed	9 knots (17 km/h; 10 mph) surfaced 5 knots (9.3 km/h; 5.8 mph) submerged (electric drive) 25 knots (46 km/h; 29 mph) submerged (HTP drive)
Range	1,840 nmi (3,410 km; 2,120 mi) at 9 knots (17 km/h; 10 mph) surfaced 76 nmi (141 km; 87 mi) at 2 knots (3.7 km/h; 2.3 mph) submerged (electric drive) 117 nmi (217 km; 135 mi) at 20 knots (37 km/h; 23 mph) submerged (HTP drive)
Complement	12
Armament	2 × 53.3 cm (21 in) torpedo tubes (bow) 4 × torpedoes
Service record[1]
Part of:	5th U-boat Flotilla 14 – 30 November 1943 8th U-boat Flotilla 1 December 1943 – 14 February 1945 5th U-boat Flotilla 15 February – 5 May 1945
Identification codes:	M 52 496
Commanders:	Oblt.z.S. Werner Klug 14 November 1943 – 31 August 1944 Oblt.z.S. Philipp Becker 1 September 1944 – 5 May 1945
Operations:	None
Victories:	None

German submarine U-794 was a Type XVIIA U-boat of Nazi Germany's Kriegsmarine during the Second World War. She was one of a small number of U-boats fitted with Hellmuth Walter's high test peroxide propulsion system, which offered a combination of air-independent propulsion and high submerged speeds. She spent the war as a trials vessel and was scuttled on 5 May 1945 in Gelting Bay.

U-794 was built by Friedrich Krupp Germaniawerft, Kiel. The keel was laid down on 1 February 1943, the boat was launched on 7 October. She was commissioned on 14 November. The Feldpost Number was M 52 496.

U-794 did not undertake any combat patrols and was instead assigned as a trials boat at first to the 5th U-boat Flotilla, followed by the 8th U-boat Flotilla, before returning to the 5th flotilla for the rest of the war. In late March 1944, Admiral Karl Dönitz and four other admirals took part in a trial of U-794. Although they were enthusiastic, the boat, designed for high underwater speed (over 20 m.p.h.) was difficult to manoeuvre, and the keel to beam ratio was too high.