Also called Ships-Of-The-Line, these ships were the "heavy-guns" of the fleet. They resembled galleons in design, but sported heavy fire-power with an average of 65 guns. It was not uncommon to have over 100 guns. They were around 1,000 tons and had 3 masts, which were square-rigged, except for a lateen sail on her aft-mast. Only the three major sea-powers of the time (Spain, England, and France) had an extensive use of these ships.
Galleons were large ships meant for transporting cargo. Galleons were sluggish behemoths, not able to sail into or near the wind. The Spanish treasure fleets were made of these ships. Although they were sluggish, they weren't easy targets for they could carry heavy cannon which made a direct assault upon them difficult. She had two to three decks. Most had three masts, forward masts being square-rigged, lateen-sails on the mizzenmast, and a small square sail on her rising bow sprit.