Columbia subject headings:
Antiquities--Congresses.
Shipbuilding--Mediterranean Region--History--To 1500--Congresses.
Ships, Ancient--Congresses.
Ships--Mediterranean Region--History--To 1500--Congresses.
Harvard subject headings:
Shipbuilding--Byzantine Empire--History--Congresses.
Shipbuilding--Greece--History--Congresses.
Shipbuilding--Rome--History--Congresses.
Ships in art--Congresses.
Ships, Ancient--Congresses.
Ships--Byzantine Empire--History--Congresses.
Ships--Greece--History--Congresses.
Ships--Rome--History--Congresses.
Princeton subject headings:
Antiquities--Congresses.
Shipbuilding--Mediterranean Region--History--To 1500--Congresses.
Ships, Ancient--Congresses.
Ships--Mediterranean Region--History--To 1500--Congresses.