To 13 ports; the busiest crossings are to Tanjung Priok (Jakarta) (40 hours, four times a month), Serasan (15 hours, twice a month), Belitung (21 hours, twice a month), Midai (25 hours, twice a month), Selat Lampa (Natuna) (30 hours, twice a month), Patimban (38 hours, twice a month), Tarempa (43 hours, twice a month) and Semarang (44 hours, twice a month).