To 16 ports; the busiest crossings are to Kos (1 hour 45 minutes, six times a week), Patmos (55 minutes, five times a week in season), Rhodes (5 hours 35 minutes, four times a week), Piraeus (9½ hours, four times a week), Kalymnos (an hour, three times a week), Lipsi (45 minutes, once a week), Symi (4 hours 55 minutes, once a week) and Syros (5 hours 10 minutes, once a week).