Part of a ship's rigging includes topsail, LANYARD, and jackstay. A topsail is a sail set above the lower sails on a mast, and is used to increase speed. A LANYARD is a rope or line used to secure an object, such as a sail, to a mast or spar. A jackstay is a rope or wire running along the length of a yard, used to support the foot of a sail. All three of these components are essential for a ship's rigging, and are used to control the sails and direct the ship.