The sides of the gooseneck at the inner ends of traditional booms or gaffs that hugs the mast.

Related Terms


A mast or yard, lying on board in reserve.


A specialized facility where ocean container vessels dock to discharge and load containers, equipped with cranes with a safe lifting capacity of 35-40 tons, with booms having an outreach of up to 120 feet in order to reach the outside cells of vessels. Most such cranes operate on rail tracks and have articulating rail trucks on each of their four legs, enabling them to traverse along the terminal and work various bays on the vessel and for more than one crane to work a single vessel simultaneously. Most terminals have direct rail access and container storage areas, and are served by highway carriers.


A tall vertical or raked structure, usually of circular section, located on the centerline of a ship and used to carry navigation lights, radio antennas and cargo booms


A fitting that attaches the boom to the mast, allowing it to move freely.


Sprung loaded mechanism whose jaws will jam a rope under strain.


A wrench having fixed jaws forming a V, with teeth on one or both jaws.


A device for holding a component of an instrument rigid, usually by means of adjustable jaws or set screws, such as the workpiece in a metalworking or woodworking machine, or the stylus or needle of a phonograph pickup.


A device for gripping and effectively shortening a length of cable, wire rope, or chain by means of two jaws which close when one pulls on a ring. See puller.


A chuck used in a lathe whose jaws either move independently or simultaneously.


Pliers with cutting jaws at an angle to the handles to permit cutting off wires close to terminals.

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