Double overhand noose

The double overhand noose is a very secure hitch knot. It might be used by cavers and canyoneers to bind a cow tail or a foot loop to a carabiner.^[4]

Double overhand noose binding carabiners.^[a][b]

Double overhand noose
Names	Double overhand noose, Scaffold,[1][2] Poacher's Knot[3]
Category	Hitch
Efficiency	High
Related	Noose, Double overhand knot, Double fisherman's knot
Releasing	Jamming
Typical use	Bind a carabiner
Caveat	Difficult to untie
ABoK	#409, #1120, #1228

Details

• 
  Make a bight
• 
  Turn around the standing end
• 
  the 2nd round rides the 1st
• 
  Tie inside the two rounds
• 
• 
  Tighten

A heavily tightened double overhand noose will jam. The bound object has to be removed before untying.

As the double overhand knot, it neither slips nor turns around. However, a third round turn might be useful with some highly lubricious spectra/nylon ropes.^[5]

See also

• List of hitch knots
• List of knots

Notes

1. The running end is stored in the bight.
2. Foot loops tied with a zeppelin loop and an alpine butterfly knot.