To partially fold up a portion of sail to reduce sail surface when wind is excessive; a single reef folds up one section; a second reef folds another; square-rigged sails are reefed upward upon its head; fore-and-aft sails downward on its foot

Related Images

external image reefed_sail.jpg
Portion of sail taken out of service to reduce impact of wind on boat
Image ID: 1648

Record ID: 64