To 13 ports; the busiest crossings are to Immenstaad (15 minutes, about four times a day, April to mid-October), Altnau (20 minutes, about twice a day, late June to mid-September), Güttingen (32 minutes, about twice a day, late June to mid-September), Meersburg (15 minutes, twice a day, April to mid-October), Friedrichshafen (45 minutes, twice a day, April to mid-October), Konstanz (55 minutes, twice a day, April to mid-October), Langenargen (1 hour 20 minutes, every day, April to mid-October) and Kressbronn (1 hour 40 minutes, every day, April to mid-October).