Eskimo bowline
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Eskimo bowline | |
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Names | Eskimo bowline, Sitka loop, anti-bowline, Cossack knot, Kalmyk loop |
Category | Loop |
Origin | Ancient |
Related | Kalmyk loop, bowline, cowboy bowline, sheet bend |
Releasing | Non-jamming |
Typical use | Placing a loop in the end of a rope |
The Eskimo bowline, Cossack knot (Russian: Казачий узел), reverse bowline, or 'anti-bowline' is in a class of knots known as 'eye knots' or 'loop knots'. The eye is formed in the end of the rope to permit attachments/connections. It is quite common in Russia and is often used instead of the bowline (ABoK #1010). In the simple bowline, the collar component forms around the 'standing part'. In contrast, the collar component of an Eskimo bowline forms around the outgoing eye-leg.
On the first of arctic explorer John Ross' expeditions (1818) the Inuit (Eskimos) presented him a sled that contained several of these knots, showing that it is a genuine Inuit knot.[1] The knot is not mentioned in The Ashley Book of Knots but in its Russian equivalent, the book "Морские узлы" [2] (Marine Knots) by Lev Skryagin (1930–2000). The slipped version is known as Kalmyk loop.
![](http://178.128.105.246/content-http-upload.wikimedia.org/wikipedia/commons/thumb/1/16/Eskimo_Boeglynknoop.jpg/220px-Eskimo_Boeglynknoop.jpg)
![](http://178.128.105.246/content-http-upload.wikimedia.org/wikipedia/commons/thumb/2/29/Eskimo-bowline.jpg/400px-Eskimo-bowline.jpg)
The Eskimo bowline is about as strong as and even more secure than the bowline,[4][1] especially in synthetic lines.
Under cross load (ring loading, transverse loading profile), i.e. when the loop is pulled apart, the shown common Eskimo loop effectively mimics an ends-opposite (and inferior) left-hand sheet bend and thus can slip like the bowline; the less common Eskimo loop variant with the A–C loop (see bowline family diagram) would give a proper same-side sheet bend, thus being much stronger under cross load. Similarly, when the eye of a simple Bowline is subject to a transverse loading profile, it mimics the inferior version of the Lapp bend, and so can slip and untie; the wrongly demeaned left-handed or cowboy bowline becomes the proper Lapp bend, and should hold.[citation needed].
All of the maneuvers to tie this knot are generally in the opposite (or 'anti' direction) relative to the bowline.
After forming the 'nipping loop' with C & D (which can be formed as 'S' or 'Z' chirality) the working end is fed through that loop from the same side A as the outgoing eye leg C. This is opposite (or 'anti') direction relative to the simple (#1010) Bowline (A–D on opposite sides).
![](http://178.128.105.246/content-http-upload.wikimedia.org/wikipedia/commons/thumb/0/0d/Schotstek_rechts.jpg/220px-Schotstek_rechts.jpg)
![](http://178.128.105.246/content-http-upload.wikimedia.org/wikipedia/commons/thumb/8/8e/Bowline_knot_family.png/220px-Bowline_knot_family.png)
The so called 'Eskimo' Bowline has also been known as Boas Bowline and Cossack knot - all of these names referring to the same structure. The Kalmyk loop[5][6] can be made 'TIB' (Tiable In the Bight); however, it will not be 'EEL' (Either End Loadable).
See also
[edit]References
[edit]- ^ a b Budworth, Geoffrey (2001). The Complete Guide to Knot and Knot Tying. Lorenz Books. p. 179. ISBN 0-7548-0422-4.
- ^ Skryagin, Lev (1994). Морские узлы. Транспорт. ISBN 5-277-01807-7.
- ^ Budworth, Geoffrey (2002). The Illustrated Encyclopedia of Knots. Lyons Press. ISBN 978-1585746262.
- ^ Compton, Nic (2013). The Knot Bible. Adlard Coles Nautical. p. 83. ISBN 978-1-4081-5476-2.
- ^ Video on YouTube Tying video for Kalmyk loop
- ^ Video on YouTube Tying video for Kalmyk loop
External links
[edit]- Скрягин Л. Н. (Lev Skryagin): Морские узлы (Marine Knots) as PDF