Abstract: Small boats such as kayaks, canoes, and skiffs that are normally not propelled by wind power are provided with apparatus of this invention that can enable the conversion to a sailing vessel. A mast is movable from a horizontal inoperative position to an erect operable position. Lee boards are movable from a raised inoperative position to a lowered operative position. Sails are movable from a lowered operative position to a raised inoperative position. Movement between operative and inoperative positions of the sailing elements are all operable by the boater from the boater's normal position. The boater may thereby convert from a non-sailing to a sailing vessel or the reverse with a minimum of effort, time, and inconvenience. The vessel may be paddled with the mast up if desired.