Since the introduction of the first Nils Holgerssonin 1962, German ferry operator TT-Line has been both an innovative and reliable player in the highly competitive southern Baltic ferry market. Their core Travemunde Trelleborg route has seen no less than six different generations of ferries so far, among them the well-known cruise ferries the Peter Pan and the Nils Holgersson from 1986/87, the ecologically friendly Green Ships the Robin Hood and the Nils Dacke of 1995 and the latest generation RoPax ferries the Nils Holgersson and the Peter Pan built in 2001. But apart from that, TT-Line is also known for its English Channel affiliate Olau Line which lasted from 1978 until 1994 and for a service between Rostock and Trelleborg which was inaugurated in 1992. In 2012 TT-Line celebrated its 50th anniversary. This book tries to capture in words and pictures the fascinating history of TT-Line, their routes and their ships.