 Those employed in fishing are generally smaller.Until recent years, they were primarily built in boatyards in (from east to west on Turkey's Black Sea shores) Sürmene, Amasra, Bartın, Kurucaşile and Şile, and within İstanbul, in Silivri, Ayvansaray and Rumelikavağı districts or quarters.Even when situated in the Western Black Sea coasts of Turkey, these boatyards are usually owned, managed and staffed by boatbuilders from the eastern ends of the Black Sea.