To 21 ports; the busiest crossings are to Hao (2½ days, 28 times a year), Nukutavake (4 days, 28 times a year), Vahitahi (4½ days, 22 times a year), Hikueru (16½ hours, 19 times a year), Marokau (29 hours, 19 times a year), Amanu (46 hours, 19 times a year), Tatakoto (5 days, 17 times a year) and Pukarua (6 days, 17 times a year).