German submarine U-110 (1940)

For other ships with the same name, see German submarine U-110.

U-110 and HMS Bulldog
History
Nazi Germany
NameU-110
Ordered24 May 1938
BuilderDeSchiMAG AG Weser, Bremen
Yard number973
Laid down1 February 1940
Launched25 August 1940
Commissioned21 November 1940
HomeportLorient, France
FateCaptured, 9 May 1941, sunk the following day
General characteristics
Class and typeType IXB submarine
Displacement
  • 1,051 t (1,034 long tons) surfaced
  • 1,178 t (1,159 long tons) submerged
Length
Beam
  • 6.76 m (22 ft 2 in) overall
  • 4.40 m (14 ft 5 in) pressure hull
Draught4.70 m (15 ft 5 in)
Installed power
  • 4,400 PS (3,200 kW; 4,300 bhp) (diesels)
  • 1,000 PS (740 kW; 990 bhp) (electric)
Propulsion
Speed
  • 18.2 knots (33.7 km/h; 20.9 mph) surfaced
  • 7.3 knots (13.5 km/h; 8.4 mph) submerged
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 depth230 m (750 ft)
Complement48 to 56 officers and ratings
Armament
Service record
Part of:
Identification codes: M 23 130
Commanders:
Operations:
  • 2 patrols:
  • 1st patrol:
  • 9 – 29 March 1941
  • 2nd patrol:
  • 15 April – 9 May 1941
Victories:
  • 3 merchant ships sunk
    (10,149 GRT)
  • 2 merchant ships damaged
    (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.