To 11 ports; the busiest crossings are to Incheon (1 hour 10 minutes, four times a day), Jawoldo (45 minutes, twice a day), Soijakdo (25 minutes, every day), Daeijakdo (35 minutes, every day), Seungbongdo (55 minutes, every day), Daebudo (1 hour 40 minutes, every day), Mungapdo (15 minutes, six times a week) and Jido (55 minutes, six times a week).