Shake up.—To luff up for a short time without losing a vessel’s way, so that the sails may shake, and the pressure of the wind being taken off them, the crew are enabled to take a pull on the halyards or purchases.

Shank.—The long bar or stem of an anchor connecting the arms with the stock.

Sheave-hole.—A hole in a spar to reeve a rope through.

Sheet.—A rope attached to the clews of a sail, by means of which the sail is trimmed to the wind.

Small Stuff.—Spun-yarn, marline, etc., used for serving, seizing, and other purposes.

Spars.—The masts, yards, booms, etc., on which a vessel’s sails are extended.

Stays.—Ropes supporting a mast. In Stays.—When a vessel is in the wind’s eye while going about from one tack to another.

Sternboard.—When a vessel is going stern foremost.

Stiff.—A vessel is stiff when she can carry plenty of sail without listing over. The opposite to crank.

Stock.—The cross bar at the end of an anchor’s shank.