Double fisherman's knot
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| Double Fisherman's knot | |
|---|---|
 | |
| Names | Double Fisherman's knot, Grapevine, Double englishman's knot |
| Category | Bend |
| Origin | Ancient |
| Related | Fisherman's knot, Triple fisherman's knot, Double overhand knot, Strangle knot |
| Releasing | Jamming |
| Typical use | Joining thin, stiff or slippery lines, backing up critical knots such as the Figure-of-eight loop or Figure-of-eight follow through |
| Caveat | Difficult to untie |
| ABoK | #294, #1415, #498 |
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.
Usage
[edit]A primary use of this knot is to form high strength (round) slings of cord for connecting pieces of a climber's protection system.
Other uses
[edit]This knot, along with the basic fisherman's knot can be used to join the ends of a necklace cord. The two strangle knots are left separated, and in this way the length of the necklace can be adjusted without breaking or untying the strand.
Tying
[edit]Line form
[edit]
Drop form
[edit]
Security
[edit]Dyneema/Spectra's very high lubricity leads to poor knot-holding ability and has led to the recommendation to use the triple fisherman's knot rather than the traditional double fisherman's knot in 6 mm Dyneema core cord to avoid a particular failure mechanism of the double fisherman's, where first the sheath fails at the knot, then the core slips through.[1]
See also
[edit]References
[edit]External links
[edit]- Double Fisherman's Knot on netknots.com.
