Schooners were first used by the Dutch in the 16th or 17th century, and further developed in North America from the time of the American Revolution.
Most traditionally riggedschooners are gaff rigged, sometimes carrying a square topsail on the foremast and occasionally, in addition, a square fore-course (together with the gaff foresail).
Schooners were used to carry cargo in many different environments, from ocean voyages, to coastal runs and on large inland bodies of water.
Square rig is a generic type of sailing vessel in which the main horizontal spars are perpendicular to the keel of the ship.
Square rig can also describe individual four-cornered sails suspended from yardarms, and carried on either a square rigged or a mainly fore-and-aft rigged vessel, such as one with either a bermuda rigged or gaff rigged mainsail.
Square rigs do have their advantages, however; they are more efficient when running, where the high lift to drag is irrelevent and the total lift is the most important issue.