To 12 ports; the busiest crossings are to Amaturá (1 hour 15 minutes, six times a week), Santo Antônio do Içá (2 hours 45 minutes, six times a week), Tonantins (3½ hours, six times a week), Benjamin Constant (3 hours 55 minutes, six times a week), Tabatinga (4 hours 50 minutes, six times a week), Jutaí (6¼ hours, six times a week), Fonte Boa (9¼ hours, six times a week) and Alvarães (13¼ hours, six times a week).