  |
 |
  Automatic: Fast Slow
|
|
1 2 3 4 5 6 7 8 9 10 Structure
To tie the knot move the mouse along the numbers 1 - 10.
Alternate between 10 and Structure to see the structure. |
Uses: The Bowline on a Bight (ABOK # 1080, p 195.) makes a secure loop in the middle of a piece of rope. It does not slip or bind. It is satisfying to start with a plain length of rope and finish with a secure safe loop in its middle. See also the Alpine Butterfly (picture on right).
Tying it: It should be easy to tie but because it is initially hard to visualize it can be confusing. This knot was one of the justifications for preparing these animations. Several Applications:
Bosun's Chair: Because two loops are created it has been claimed that it makes an emergency bosun's chair which is more comfortable than a single loop. One loop can go round each thigh with the free tail going round the chest for security. Alternatively, one loop would go round the chest and one round the thighs. However, unless the rope was a couple of inches or more in diameter it would require a demanding emergency to make one really appreciate the "comfort" of either of these bosun's chairs. 
Emergency Purchase: A Bowline on a Bight can also be used to gain some additional purchase: create a Bowline on a Bight in the rope; pass the free end of the rope round a post, then back through the loops and finally to the post again. This give a three to one purchase - admittedly with some friction. However, see also the Trucker's Hitch.
|
Disclaimer: Any activity that involves ropes is potentially hazardous. Lives may be at risk - possibly your own. Considerable attention and effort have been made to ensure that these descriptions are accurate. However, many critical factors cannot be controlled, including: the choice of materials; the age, size, and condition of ropes; and the accuracy with which these descriptions have been followed. For this reason no responsibility is accepted for incidents arising from the use of this material.
| Copyright © 2009 Grog LLC All Rights Reserved |
 |
Updated: Jun 24th 2009 |
