Trans Europ Express
The Bird Flight Line was subsequently used by many important long-distance trains such as the Nord Express and the "Italia Express" (Rome–Copenhagen). Added to this was busy freight traffic. Thus, for example, according to Deutsche Bahn 190,757 freight wagons used the train ferry in 1994. "D-trains" (D-Züge: long-distance expresses), the Trans Europ Express "Merkur" and "Trans-Europ-Express-Marchandises" (TEEM) international freight trains ran to Puttgarden, hauled by diesel locomotives of class 221 and later of class 218 in double traction and the large Soviet diesel locomotives of class 232.