German submarine U-603

History
Nazi Germany
Name	U-603
Ordered	22 May 1940
Builder	Blohm & Voss, Hamburg
Yard number	579
Laid down	27 February 1941
Launched	16 November 1941
Commissioned	2 January 1942
Fate	Missing since 19 February 1944 in the North Atlantic. No explanation for her loss.
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 or 26 TMA mines; 1 × 8.8 cm (3.46 in) deck gun (220 rounds); 1 x 2 cm (0.79 in) C/30 AA gun;
Service record
Part of:	5th U-boat Flotilla; 2 January – 30 November 1942; 1st U-boat Flotilla; 1 December 1942 – 19 February 1944;
Identification codes:	M 47 142
Commanders:	Kptlt. Kurt Kölzer; 2 January – 12 September 1942; Oblt.z.S. Hans-Joachim Bertelsmann; 13 September 1942 – 2 May 1943; Oblt.z.S. Rudolf Baltz; 3 May 1943 – 28 January 1944; Kptlt. Hans-Joachim Bertelsmann; 29 January – 19 February 1944;
Operations:	5 patrols:; 1st patrol:; 23 November – 9 December 1942; 2nd patrol:; 7 February – 26 March 1943; 3rd patrol:; 5 May – 16 July 1943; 4th patrol:; 9 September – 3 November 1943; 5th patrol:; 5 – 19 February 1944;
Victories:	4 merchant ships sunk ; (22,406 GRT)

German submarine U-603 was a Type VIIC U-boat built for Nazi Germany's Kriegsmarine for service during World War II. She was laid down on 27 February 1941 by Blohm & Voss, Hamburg as yard number 579, launched on 16 November 1941 and commissioned on 2 January 1942 under Kapitänleutnant Kurt Kölzer.

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