German submarine U-110 (1940)

U-110 and HMS Bulldog
History
Nazi Germany
Name:	U-110
Ordered:	24 May 1938
Builder:	DeSchiMAG AG Weser, Bremen
Yard number:	973
Laid down:	1 February 1940
Launched:	25 August 1940
Commissioned:	21 November 1940
Homeport:	Lorient, France
Fate:	Captured, 9 May 1941, sunk the following day
General characteristics
Class and type:	German Type IXB submarine
Displacement:	1,051 t (1,034 long tons) surfaced 1,178 t (1,159 long tons) submerged
Length:	76.50 m (251 ft) o/a 58.75 m (192 ft 9 in) pressure hull
Beam:	6.76 m (22 ft 2 in) overall 4.40 m (14 ft 5 in) pressure hull
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
Range:	12,000 nmi (22,000 km; 14,000 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:	48 to 56 officers and ratings
Armament:	6 × torpedo tubes (4 bow, 2 stern) 22 × 53.3 cm (21 in) torpedoes 1 × 10.5 cm (4.1 in) deck gun (180 rounds) 1 × 3.7 cm (1.5 in) AA gun 1 × twin 2 cm FlaK 30 AA guns
Service record
Part of:	Kriegsmarine: 2nd U-boat Flotilla
Commanders:	Kptlt. Fritz-Julius Lemp 21 November 1940 – 9 May 1941
Operations:	Two 1st patrol: 9–29 March 1941 2nd patrol: 15 April – 9 May 1941
Victories:	Three ships sunk for a total of 10,149 GRT Two ships damaged for a total of 8,675 GRT

German submarine U-110 was a Type IXB U-boat of Nazi Germany's Kriegsmarine that operated during World War II. She was captured by the Royal Navy on 9 May 1941 and provided a number of secret cipher documents to the British. U-110's capture, later given the code name "Operation Primrose", was one of the biggest secrets of the war, remaining so for seven months. President Franklin D. Roosevelt was only told of the capture by Winston Churchill in January 1942.

German Type IXB submarines were slightly larger than the original German Type IX submarines, later designated IXA. U-110 had a displacement of 1,051 tonnes (1,034 long tons) when at the surface and 1,178 tonnes (1,159 long tons) while submerged. The U-boat had a total length of 76.50 m (251 ft 0 in), a pressure hull length of 58.75 m (192 ft 9 in), a beam of 6.76 m (22 ft 2 in), a height of 9.60 m (31 ft 6 in), and a draught of 4.70 m (15 ft 5 in). The submarine was powered by two MAN M 9 V 40/46 supercharged four-stroke, nine-cylinder diesel engines producing a total of 4,400 metric horsepower (3,240 kW; 4,340 shp) for use while surfaced, two Siemens-Schuckert 2 GU 345/34 double-acting electric motors producing a total of 1,000 metric horsepower (740 kW; 990 shp) for use while submerged. She had two shafts and two 1.92 m (6 ft) propellers. The boat was capable of operating at depths of up to 230 metres (750 ft).

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