To 16 ports; the busiest crossings are to Öhningen (17 minutes, three times a day in season), Mammern (24 minutes, three times a day in season), Wangen (30 minutes, three times a day in season), Diessenhofen (35 minutes, three times a day in season), Hemmenhofen (42 minutes, three times a day in season), Steckborn (48 minutes, three times a day in season), Büsingen (50 minutes, three times a day in season) and Gaienhofen (54 minutes, three times a day in season).