German submarine U-155 (1941)

U-505, a typical Type IXC boat
History
Nazi Germany
Name	U-155
Ordered	25 September 1939
Builder	DeSchiMAG AG Weser, Bremen
Yard number	997
Laid down	1 October 1940
Launched	12 May 1941
Commissioned	23 August 1941
Fate	Surrendered at Fredericia, 5 May 1945 Sunk during Operation Deadlight on 21 December 1945
General characteristics
Class and type	Type IXC submarine
Displacement	1,120 t (1,100 long tons) surfaced 1,232 t (1,213 long tons) submerged
Length	76.76 m (251 ft 10 in) o/a 58.75 m (192 ft 9 in) pressure hull
Beam	6.76 m (22 ft 2 in) o/a 4.40 m (14 ft 5 in) pressure hull
Height	9.60 m (31 ft 6 in)
Draught	4.70 m (15 ft 5 in)
Installed power	4,400 PS (3,200 kW; 4,300 bhp) (diesels) 1,000 PS (740 kW; 990 shp) (electric)
Propulsion	2 shafts 2 × diesel engines 2 × electric motors
Speed	18.3 knots (33.9 km/h; 21.1 mph) surfaced 7.3 knots (13.5 km/h; 8.4 mph) submerged
Range	13,450 nmi (24,910 km; 15,480 mi) at 10 knots (19 km/h; 12 mph) surfaced 64 nmi (119 km; 74 mi) at 4 knots (7.4 km/h; 4.6 mph) submerged
Test depth	230 m (750 ft)
Complement	4 officers, 44 enlisted48 to 56
Armament	6 × torpedo tubes (4 bow, 2 stern) 22 × 53.3 cm (21 in) torpedoes 1 × 10.5 cm (4.1 in) SK C/32 deck gun (180 rounds) 1 × 3.7 cm (1.5 in) SK C/30 AA gun 1 × twin 2 cm FlaK 30 AA guns
Service record
Part of:	4th U-boat Flotilla 23 August 1941 – 31 January 1942 10th U-boat Flotilla 1 February 1942 – 14 August 1944 33rd U-boat Flotilla 15 August 1944 – 5 May 1945
Identification codes:	M 01 188
Commanders:	K.Kapt. Adolf Piening 23 August 1941 – February 1944 Oblt.z.S. Johannes Rudolph February – 14 August 1944 Lt.z.S. Ludwig von Friedeburg 15 August – November 1944 Oblt.z.S. Johannes Rudolph November – December 1944 Kptlt. Erwin Witte December 1944 – 20 April 1945 Oblt.z.S. Friedrich Altmeier 21 April – 5 May 1945
Operations:	10 patrols: 1st patrol: 7 February – 27 March 1942 2nd patrol: 24 April – 14 June 1942 3rd patrol: 9 July – 15 September 1942 4th patrol: 7 November – 30 December 1942 5th patrol: 8 February – 30 April 1943 6th patrol: 10 – 16 June 1943 7th patrol: a. 30 June – 11 August 1943 b. 18 – 19 September 1943 8th patrol: a. 21 September 1943 – 1 January 1944 b. 5 – 6 March 1944 9th patrol: 11 March – 23 June 1944 10th patrol: 9 September – 21 October 1944
Victories:	25 merchant ships sunk (126,664 GRT) 1 warship sunk (13,785 tons) 1 auxiliary warship damaged (6,736 GRT)

German submarine U-155 was a Type IXC U-boat of Nazi Germany's Kriegsmarine built for service during World War II. Her keel was laid down on 1 October 1940 by DeSchiMAG AG Weser in Bremen as yard number 997. She was launched on 12 May 1941 and commissioned on 23 August with Kapitänleutnant Adolf Piening in command. Piening was relieved in February 1944 (after being promoted to Korvettenkapitän), by Oberleutnant zur See Johannes Rudolph.