Columbia subject headings:
Merchant marine--Turkey--History.
Navies--Turkey--History.
Turkey--History, Naval.
Turkey--History--Ottoman Empire, 1288-1918.
Harvard subject headings:
Merchant marine--Turkey--History.
Turkey--History, Naval.
Turkey--History--Ottoman Empire, 1288-1918.
Princeton subject headings:
Merchant marine--Turkey--History.
Turkey--History, Naval.
Turkey--History--Ottoman Empire, 1288-1918.