'Drachen' was a U-boat wolfpack operation in the Atlantic (22 November/3 December 1942).

The wolfpack comprised U-262, U-445, U-611, U-623 and U-663, and for the loss of none of its own number sank two British ships (12,348 tons) in attacks on the SC.110 and HX.216 convoys. The two ships were the 7,178-ton Ocean Crusader of the HX.216 convoy and 5,170-ton Barberrys of the SC.110 convoy, and these were sunk by Oberleutnant Heinz Franke’s U-262 and Kapitänleutnant Heinrich Schmid’s U-663 respectively.