German submarine U-413

History
Nazi Germany
Name	U-413
Ordered	15 August 1940
Builder	Danziger Werft, Danzig
Yard number	114
Laid down	25 April 1941
Launched	15 January 1942
Commissioned	3 June 1942
Fate	Sunk on 20 August 1944 in the Cornish corridor, 15 miles off the coast near Padstow, by a naval mine. 45 dead and one survivor[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 × G7e torpedoes 1 × 8.8 cm (3.46 in) deck gun (220 rounds) 1 × 2 cm (0.79 in) C/30 anti-aircraft guns
Service record
Part of:	8th U-boat Flotilla 3 June – 31 October 1942 1st U-boat Flotilla 1 November 1942 – 20 August 1944
Identification codes:	M 03 918
Commanders:	Kptlt. Gustav Poel 3 June 1942 – 19 April 1944 Oblt.z.S. Dietrich Sachse 20 April – 20 August 1944
Operations:	7 patrols: 1st patrol: a. 22 – 24 October 1942 b. 28 October – 25 November 1942 2nd patrol: 27 December 1942 – 17 February 1943 3rd patrol: 29 March – 13 June 1943 4th patrol: a. 4 – 5 September 1943 b. 8 – 18 September 1943 c. 27 – 28 September 1943 d. 2 October – 21 November 1943 5th patrol: 26 January – 27 March 1944 6th patrol: 6 – 9 June 1944 7th patrol: 2 – 20 August 1944
Victories:	5 merchant ships sunk (36,885 GRT) 1 warship sunk (1,100 tons)

German submarine U-413 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II.

She was laid down on 25 April 1941 at the Danziger Werft (as yard number 114), launched on 15 January 1942 and commissioned on 3 June, with Oberleutnant zur See Gustav Poel in command. Poel commanded her (receiving promotion to Kapitänleutnant), until 19 April 1944, when he was relieved by Oberleutnant zur See Dietrich Sachse who commanded her until her loss. She conducted seven patrols in World War II, sinking six ships totalling 36,885 gross register tons (GRT) and 1,100 tons.