A sail plan is a drawing of a sailing craft, viewed from the side, depicting its sails, the spars that carry them and some of the rigging that supports the rig. By extension, "sail plan" describes the arrangement of sails on a craft. A sailing craft may be waterborne, an iceboat, or a sail-powered land vehicle.
Sail plan of a brig
"Sailing carriage", 1785
Full-rigged clipper ship, Comet, 1851
Barque, Fusi Yama, 1865
A sailing ship is a sea-going vessel that uses sails mounted on masts to harness the power of wind and propel the vessel. There is a variety of sail plans that propel sailing ships, employing square-rigged or fore-and-aft sails. Some ships carry square sails on each mast—the brig and full-rigged ship, said to be "ship-rigged" when there are three or more masts. Others carry only fore-and-aft sails on each mast, for instance some schooners. Still others employ a combination of square and fore-and-aft sails, including the barque, barquentine, and brigantine.
A barque—a three-masted sailing ship with square sails on the first two masts (fore and main) and fore-and-aft sails on the mizzenmast
Fijian voyaging outrigger boat with a crab claw sail, an example of a typical Austronesian vessel with outriggers and a fore-and-aft sail
A carved stone relief panel showing a Borobudur ship (Austronesian) from 8th century Java, depicted with outriggers and fore-and-aft tanja sails
Chinese junk Keying with a center-mounted rudder post, c. 1848
