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The figure-eight knot or figure-of-eight knot is a type of stopper knot. It is very important in both sailing and rock climbing as a method of stopping ropes from running out of retaining devices. Like the overhand knot , which will jam under strain, often requiring the rope to be cut, the figure-eight will also jam, but is usually more easily ...
A figure-of-eight loop tied using the follow-through method. A figure-eight loop is created by doubling the rope into a bight, then tying the standard figure-eight knot.. In climbing, this knot is used to save time when repeatedly attaching the rope to climbing harnesses, using locking carabiners, such as when a group of people are climbing on the same top-rope.
When finished, the working end forms a figure eight. Because of the danger of incorrectly dressing the Yosemite bowline and capsizing it even before it is set, it may be safer and less error-prone to use a standard or double bowline with a backup stopper knot added to the tail, such as a double overhand knot tied around the loop.
This list of knots includes many alternative names for common knots and lashings. Knot names have evolved over time, and there are many conflicting or confusing naming issues. The overhand knot, for example, is also known as the thumb knot. The figure-eight knot is also known as the Savoy knot or the Flemish knot.
The Flemish bend, also known as a figure eight bend, a rewoven figure eight is a knot for joining two ropes of roughly similar size. A loose figure-eight knot is tied in the end of one rope. The second rope is now threaded backwards parallel to the first rope.
The double bowline is one of the typical tie-in knots used in climbing, along with the figure eight follow through [3] [4] and the Yosemite bowline. [5] The advantage of the double bowline over the figure 8 is that it is easier to untie after being weighted in a fall, [3] [4] and so is used by sport climbers who take multiple lead falls and then have trouble untying their figure eights.
The offset figure-eight bend is a poor knot that has been implicated in the deaths of several rock climbers. [1] [3] [4] The knot may capsize (invert) under load, as shown in the figure, and this can happen repeatedly. [5] Each inversion reduces the lengths of the tails. Once the tails are used up completely, the knot comes undone.
Figure-eight knot of practical knot-tying, with ends joined. In knot theory, a figure-eight knot (also called Listing's knot [1]) is the unique knot with a crossing number of four. This makes it the knot with the third-smallest possible crossing number, after the unknot and the trefoil knot. The figure-eight knot is a prime knot.