Surrounded by seas on three sides (the Mediterranean Sea, Aegean Sea and the Black Sea), and with two important straits (Istanbul and Dardanelles) and 8333 km of coastal line, Turkey still lacks the enough use of sea as a means of transportation of goods and people. However, ferry and human transportation and ro-ro transportation are available at the straits of Istanbul and Dardanelles; between Istanbul and Adalar, Yalova, Cinarcik, Armutlu, Avsa and Marmara Islands and Bandirma; between Dardanelles and Ecaabat and Gokceada; Girne Port in Cyprus and Tasucu and Alanya; Gazimagosa Port and Mersin Port; between Van and Tatvan on the Van Lake; between Greek islands and Turkish coastal cities such as Ayvalik, Cesme, Kusadasi, Bodrum and Marmaris; and between great ports such as Istanbul, Trabzon, Antalya, Izmir, Cesme and other Turkish and foreign ports. Especially in summer, ferry line between Venetia and Birindisi Ports of Italy to Cesme (Izmir) Port is preferred by the tourists who come to Turkey by car.
With privatization of the Turkish Navigation Facilities, development of the navy yards, increase in the number and capacity of ports and enhancement of the commercial fleet, the sea transportation is expected to develop even more in the future.
The greatest and most active port of Turkey is the Istanbul Port, and the greatest commercial port is the Izmir Port. The other important modern ports include the ports of Mersin, Iskenderun, Bandirma, Izmit, Zonguldak, Eregli, Samsun, Trabzon, Sinop and Antalya.