Deck machinery, or ship deck machinery, is machinery equipment that mounted on the ship's deck , is the most important part of the ship.Deck machinery is the required machinery and equipment to ensure the normal ship sailing and ship dock, loading and unloading goods, passengers up and down .The ship deck machinery can be divided into big deck machinery and small deck machinery.Mainly includes the steering gear, windlass and winch, fairleader, bollard (LAN pile), roller for fairleader, deck cranes, etc.