Nautical spar is a term used to describe the various poles, spars, and masts that are used on sailing vessels. The jibboom is a spar extending from the bow of a sailing vessel, typically used to support the jib sail. The MAST is a tall vertical pole that supports the sails and rigging of a sailing vessel. The SPRIT is a spar that extends diagonally from the MAST of a sailing vessel, typically used to support the fore-and-aft sails. The BOWSPRIT is a spar extending from the bow of a sailing vessel, typically used to support the jib sail and other rigging.