To 13 ports; the busiest crossings are to Kaş (7 minutes, twice a day in season), Rhodes (2 hours 20 minutes, eight times a week in season), Symi (5 hours 45 minutes, three times a week in season), Tilos (7½ hours, three times a week in season), Nisyros (8¾ hours, three times a week in season), Kos (10¼ hours, three times a week in season), Kalymnos (11½ hours, three times a week in season) and Piraeus (22¼ hours, three times a week in season).