Adding the sails to the above, on each mast from bottom to top: course, tops'l (sometimes divided into lower and upper), t'gallant sail (sometimes lower and upper), royal, skysail, moonraker. Rigged on booms outboard of these sails are corresponding studding- or stu'ns'ls. Headsails working forward from the foremast: fore staysail, inner jib, outer jib, flying jib, spindle jib, jib of jibs. Plus staysails between the masts, named for their stay. The fore-and-aft rigged sails set aft of the mizzen (or jigger mast of a 4-master) are the spanker and gaff sail or gaff tops'l.