Columbia subject headings:
Harbors--Turkey--Istanbul.
Naval architecture--Turkey--Istanbul.
Shipbuilding industry--Turkey--Istanbul.
Shipyards--Turkey--Istanbul.
Turkey--History, Naval.
Harvard subject headings:
Harbors--Turkey--Istanbul.
Naval architecture--Turkey--Istanbul.
Shipbuilding industry--Turkey--Istanbul.
Shipyards--Turkey--Istanbul.
Turkey--History, Naval.
Princeton subject headings:
Harbors--Turkey--Istanbul.
Naval architecture--Turkey--Istanbul.
Shipbuilding industry--Turkey--Istanbul.
Shipyards--Turkey--Istanbul.
Turkey--History, Naval.