BLS Schifffahrt sails five routes between 23 ports in Switzerland, mostly Thun, Interlaken West and Beatenbucht. From Thun: Interlaken West, Beatenbucht, Spiez and 11 other ports. From Interlaken Ost: Brienz, Iseltwald, Bönigen, Ringgenberg, Niederried, Oberried and Giessbach.