German submarine U-552 was a Type VIIC U-Boat built for the Nazi German Kriegsmarine for service during World War II. She was laid down on 1 December 1939 at Blohm & Voss in Hamburg as 'werk' 528, launched on 14 September 1940 and went into service on 4 December 1940. U-552 was nicknamed the Roter Teufel ("Red Devil") after its mascot of a grinning devil which was painted on the conning tower. She was one of the more successful of her class, operating for over three years of continual service and sinking or damaging 30 Allied ships with 164,276 tons sunk and 26,910 tons damaged. She was a member of 21 wolf packs.