To 9 ports; the busiest crossings are to Selat Lampa (Natuna) (4 hours, twice a month), Serasan (8 hours, twice a month), Tarempa (17 hours, twice a month), Letung (22 hours, twice a month), Pontianak (Dwikora) (29 hours, twice a month), Kijang (36 hours, twice a month), Belinyu (2½ days, twice a month) and Ujung (Surabaya) (3 days, twice a month).