Columbia subject headings:
Harvard subject headings:
Naval architecture--Europe--History--To 1500.
Navigation--Europe--History--To 1500.
Shipbuilding--Europe--History--To 1500.
Ships, Medieval--Europe.
Underwater archaeology--Europe.
Princeton subject headings:
Boatbuilding--Europe--History.
Naval architecture--Europe.
Shipbuilding--Europe--History.
Ships, Medieval--Europe.
Underwater archaeology--Europe.