To 11 ports; the busiest crossings are to Izu Oshima (1 hour 45 minutes, seven times a day in season), Niijima (2 hours 20 minutes, four times a day in season), Shikinejima (2 hours 40 minutes, four times a day in season), Kozushima (3 hours 10 minutes, four times a day in season), Toshima (9¾ hours, twice a day), Miyakejima (6½ hours, every day), Mikurajima (7½ hours, every day) and Hachijojima (10½ hours, every day).