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A Tensionless hitch is an anchor knot used for rappelling or rope rescue. Unlike most knots, the tensionless hitch retains a 100% efficiency rating, [ 3 ] meaning the strength of the knot is equal to the strength of the rope; it is not a significant stress riser .
The knot was first introduced by the Victorian chief fire officer Eyre Massey-Shaw in 1876. [2] Made with suitable rope by qualified personnel this knot can be used as a rescue harness capable of supporting a person while being hoisted or lowered to safety. One loop supports the body, around the chest and under the arms, and the other loop ...
A radium release hitch is a load-releasing hitch using 3:1 mechanical advantage which is used in a two-rope technical rescue system. [1] The Radium Release Hitch allows a load to be transferred from one rope to another and is commonly rigged into the belay line prior to the operation of a two-rope technical rescue system.
The knot is tied in the same way the original bowline is, except with a doubled rope (using a bight). An overhand loop is formed in the rope, the working end is passed back through that loop, behind the standing part of the rope, back through the loop and pulled tight.
Karash double loop is a common name for a knot forming two loops. This knot has been a known variant of the Bowline on a bight per the International Guild of Knot Tyers, referred to as bowline twist or twisted collar bowline on a bight. The knot is also referred to as nœud de fusion in French references and sometimes called Fusion knot in English.
The double fisherman's knot or grapevine knot is a bend. This knot and the triple fisherman's knot are the variations used most often in climbing , arboriculture , and search and rescue . The knot is formed by tying a double overhand knot , in its strangle knot form, with each end around the opposite line's standing part.
It is useful when tightening knots and for other purposes in ropework. As the name suggests, the type of rod traditionally used with this hitch is a marlinespike . The advantages of this hitch over others which might serve the purpose are its quickness of tying and ease of releasing.
The butterfly bend is a knot used to join the ends of two ropes together. It is the analogous bend form of the butterfly loop , [ 1 ] in that it is the butterfly loop with the loop cut. [ 2 ] The observation that the butterfly loop is secure enough to isolate a worn or damaged section of rope within the loop indicated that the bend form of the ...