A gaff-rigged sailboat is a type of sailing vessel that uses a gaff, a wooden spar, to support the sail. Other words to describe this type of sailboat include the cutter rig, sloop rig, and ketch rig. A cutter rig is a single-masted sailboat with two or more headsails. The sloop rig has a single mast and one headsail. The ketch rig has two masts, with the smaller mizzenmast located aft of the mainmast. These synonyms for the term "gaff-rigged sailboat" indicate the different variations and styles available for this classic type of sailboat.