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  2. Gin pole - Wikipedia

    en.wikipedia.org/wiki/Gin_pole

    A gin pole in use loading logs A gin pole used to install a weather vane atop the 200-foot steeple of a church Roof trusses being assembled with gin poles. A gin pole is a mast supported by one or more guy-wires that uses a pulley or block and tackle mounted on its upper end to lift loads. The lower end is braced or set in a shallow hole and ...

  3. Gyn - Wikipedia

    en.wikipedia.org/wiki/Gyn

    A gyn is an improvised three-legged lifting device used on sailing ships.It provides more stability than a derrick or sheers, and requires no rigging for support. Without additional support, however, it can only be used for lifting things directly up and down.

  4. Derrick - Wikipedia

    en.wikipedia.org/wiki/Derrick

    A derrick is a lifting device composed at minimum of one guyed mast, as in a gin pole, which may be articulated over a load by adjusting its guys. Most derricks have at least two components, either a guyed mast or self-supporting tower, and a boom hinged at its base to provide articulation, as in a stiffleg derrick. The most basic type of ...

  5. Shear legs - Wikipedia

    en.wikipedia.org/wiki/Shear_legs

    Shear legs are a lifting device related to the gin pole, derrick and tripod (lifting device). Shears are an A-frame of any kind of material such as timbers or metal, the feet resting on or in the ground or on a solid surface which will not let them move and the top held in place with guy-wires or guy ropes simply called "guys".

  6. Guy-wire - Wikipedia

    en.wikipedia.org/wiki/Guy-wire

    Guy (red arrow), controlling the spinnaker pole. The guys supporting a sailboat mast are called "standing rigging" and in modern boats are stainless steel wire rope. Guys are rigged to the bow and stern, usually as a single guy. Lateral guys attach to "chain plates" port and starboard attached to the hull.

  7. Rigging - Wikipedia

    en.wikipedia.org/wiki/Rigging

    Rigging comprises the system of ropes, cables and chains, which support and control a sailing ship or sail boat's masts and sails. Standing rigging is the fixed rigging that supports masts including shrouds and stays. Running rigging is rigging which adjusts the position of the vessel's sails and spars including halyards, braces, sheets and ...

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  9. Block and tackle - Wikipedia

    en.wikipedia.org/wiki/Block_and_tackle

    Diagram 3 shows three rope parts supporting the load W, which means the tension in the rope is W/3. Thus, the mechanical advantage is three-to-one. By adding a pulley to the fixed block of a gun tackle the direction of the pulling force is reversed though the mechanical advantage remains the same, Diagram 3a. This is an example of the Luff tackle.