German submarine U-378

History
Nazi Germany
Name	U-378
Ordered	16 October 1939
Builder	Howaldtswerke, Kiel
Yard number	9
Laid down	3 May 1940
Launched	13 September 1941
Commissioned	30 October 1941
Fate	Sunk in mid-Atlantic by US aircraft on 20 October 1943[1]
General characteristics
Class and 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) 1 x 2 cm (0.79 in) C/30 AA gun
Service record[2][3]
Part of:	8th U-boat Flotilla 30 October 1941 – 28 February 1942 3rd U-boat Flotilla 1 March – 30 June 1942 11th U-boat Flotilla 1 July 1942 – 30 April 1943 3rd U-boat Flotilla 1 May – 20 October 1943
Identification codes:	M 34 668
Commanders:	Kptlt. Alfred Hoschatt 30 October 1941 – 11 October 1942 Oblt.z.S. Peter Schrewe 18 June – 10 September 1942 Kptlt. Hans-Jürgen Zetzsche 10 September – 11 October 1942 (acting) Kptlt. Erich Mäder 12 October 1942 – 20 October 1943
Operations:	8 patrols: 1st patrol: a. 11 – 12 March 1942 b. 15 March – 1 April 1942 2nd patrol: 7 – 20 April 1942 3rd patrol: a. 29 April – 6 May 1942 b. 8 – 12 May 1942 4th patrol: a. 12 September 1942 b. 17 – 19 October 1942 c. 7 – 9 November 1942 5th patrol: a. 11 November – 12 December 1942 b. 15 – 17 December 1942 c. 7 – 12 March 1943 6th patrol: 15 March – 1 April 1943 7th patrol: 12 April – 4 June 1943 8th patrol: 6 September – 20 October 1943
Victories:	1 warship sunk (1,920 tons)

German submarine U-378 was a Type VIIC U-boat of Nazi Germany's Kriegsmarine during World War II.

She carried out eight patrols before being sunk by US aircraft on 20 October 1943 in mid-Atlantic at position 47°40′N 28°27′W / 47.667°N 28.450°W / 47.667; -28.450.

She was a member of 16 wolfpacks.

She sank one warship.