Transportation: watercraft: sailboat
A spar is any linear object on a sailboat used to spread or control the sail. Common spars include mast, booms (including jib booms and flying jib booms), gaff, sprit, spinnaker pole, bowsprit, and yards including the lateen, lug, and squared yards. Traditionally spars were made of wood, both solid and hollow, but beginning in the 19th century they are made of steel, aluminum extrusions, and exotic frp composites including carbon fibre.