Dentur Avrasya sails eight routes between 12 ports in Turkey and Greece, mostly Üsküdar, Beşiktaş and Kabataş. From Üsküdar: Beşiktaş and Kabataş. From Beşiktaş: Kabataş, Kadıköy, Büyükada, Yalova, Eminönü and Heybeliada. From Kos: Turgutreis and Bodrum. From Turgutreis: Kalymnos.