The largest type of ship in my fantasy world is a galley. In real life, galleys were used by the Greeks, Romans, and Persians. Unlike real life galleys, which were propelled by many oars, the galleys in my fantasy world are propelled by wind and sails much like the ships of the 17th and 18th centuries. In my fantasy world, galleys are either used as large cargo ships or the biggest warships on the market. As such, galleys frequently appear throughout my fantasy books.