Eskimo bowline

{{Short description|Loop knot}}

{{More citations needed|date=April 2018}}

{{Infobox knot

| image=Kosakenknoten.jpg

| name=Eskimo Bowline

| names=Sitka Loop, Anti Bowline, Cossack Knot, Kalmyk Loop

| type=Loop

| origin=Ancient

| releasing=Non-jamming

| strength=

| related= Kalmyk loop, Bowline, Cowboy Bowline, Sheet Bend

| caveat=

| uses=Placing a loop in the end of a rope

| instructions=

}}

The Eskimo bowline, Cossack knot ({{langx|ru|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.

The knot is not mentioned in The Ashley Book of Knots but in its Russian equivalent, the book "Морские узлы"

{{cite book |last=Skryagin |first=Lev |title=Морские узлы |year=1994 |publisher=Транспорт |isbn=5-277-01807-7}}

(Marine Knots) by Lev Skryagin (1930–2000). The knot is referred to in the Russian book as the Cossack knot, and its slipped version is known as the Kalmyk loop.

Image:Eskimo Boeglynknoop.jpg

Image:Eskimo-bowline.jpg

The Eskimo bowline is about as strong as and even more secure than the bowline,{{cite book|first=Nic|last=Compton|title=The Knot Bible|publisher=Adlard Coles Nautical|year=2013|isbn=978-1-4081-5476-2|page=83}}{{cite book|first=Geoffrey|last=Budworth|title=The Complete Guide to Knot and Knot Tying|publisher=Lorenz Books|year=2001|isbn=0-7548-0422-4|page=179}} 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|date=April 2018}}.

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).

Image:Schotstek rechts.jpg

File: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{{youtube|wgJc1ymlYgg}} Tying video for Kalmyk loop{{youtube|3Bl31rAWTcI}} Tying video for Kalmyk loop can be made 'TIB' (Tiable In the Bight); however, it will not be 'EEL' (Either End Loadable).