Blue Star Ferries sails 18 routes between 44 ports in Greece, mostly Piraeus, Rhodes and Santorini. From Piraeus: Rhodes, Santorini, Kavala and 40 other ports. From Kavala: Mytilene, Samos, Leros and six other ports. From Samos: Mytilene, Thessaloniki, Chios and Limnos. From Thessaloniki: Mytilene, Samos, Leros, Chios, Limnos and Patmos.