Figure-of-nine loop
| Figure-of-nine loop | |
|---|---|
 | |
| Names | Figure-of-nine loop, Figure-nine loop |
| Category | Loop |
| Related | Figure-eight knot,Figure-of-eight follow through,Figure-of-eight loop,Stevedore knot |
| Typical use | Caving |
Thefigure-of-nine loopis a type ofknotto form a fixedloopin arope.Tiedin the bight,it is made similarly to afigure-of-eight loopbut with an extra half-turn before finishing the knot.[1]
Also similar to thestevedore loop,the figure-nine loop is generally shown as being based on an intermediate form between thefigure-eight knotand thestevedore knot.[1][2]The Ashley Book of Knotsshows this intermediate knot, instopperform, as #521.[3]
While it uses more rope and is bulkier than the figure-of-eight loop, the figure-nine loop is somewhat stronger and less likely to jam.[1]It is sometimes used instead of a figure-of-eight loop to attach a rope to an anchor point orbelay.[2]
Tying
[edit]
Figure-of-nine knot
[edit]The knot can also be tied with the end of a rope - a single strand replaces the double strand, and therefore a naked end replaces the loop. This knot can be rearranged to form a stopper knot, in the same manner as afigure-of-eight stopper knot.
References
[edit]- ^abcMarbach, Georges; Bernard Tourte (2002).Alpine Caving Techniques; A Complete Guide to Safe and Efficient Caving.English edition translated and adapted by Melanie Alspaugh. Allschwil, Switzerland: Speleo Projects, Caving Publications International. p.72.ISBN3-908495-10-5.
- ^abSmith, Bruce; Allen Padgett (1996).On Rope; North American Vertical Rope Techniques(New Revised ed.). Huntsville, Ala.:National Speleological Society.pp. 46–47.ISBN1-879961-05-9.
- ^Ashley, Clifford W. (1993) [1944],The Ashley Book of Knots,New York: Doubleday, p. 85,ISBN0-385-04025-3
