(nautical) A diagram showing the number, possible arrangements, and sizes of the sails for a sailing vessel

(idiomatic, nautical) With sails unfurled; powered by the wind. / In motion.

plural of solar sail

plural of photon sail

(astronautics) a solar sail.

plural of light sail

(astronautics) A sail-like structure on a spacecraft consisting of enormous ultrathin mirrors, propulsion being achieved by the radiation pressure of light from a star or laser.

(astronautics) A solar sail.

plural of point of sail

plural of working sail