A jib is a triangular sail that sets ahead of the foremast of a sailing vessel. Its tack is fixed to the bowsprit, to the bows, or to the deck between the bowsprit and the foremost mast. Jibs and spinnakers are the two main types of headsails on a modern boat.
Three of the four jibs are in pink.
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
