Oar-and-Sail Ship

An oar-and-sail ship is a vessel rigged to use both rowing and wind propulsion, the standard configuration of Mediterranean warships and many ancient traders. The trireme carried a square sail for passage but struck masts and rowed under oar power for battle; the longship and the galley followed the same logic, using sail to save the crew’s strength on open water and oars for maneuver, calms, and combat. The arrangement gave commanders speed and direction independent of the wind, the decisive tactical advantage of the oared warship.