Double Fisherman's Knot

The double fisherman's knot (sometimes called a barrel knot) is used to join two lengths of line.  It is one of the knots most often used in climbing as well as search and rescue.

Other uses include:
To back up a critical knot (harness tie-in knot or single-line rappel rigs).  In these instances the running end is tied around the standing end of the rope so that it cannot slip back through the knot.
The ends of a necklace cord can be tied using the double fisherman's knot and,
This is the knot most employed when creating a loop for a Prusik Hitch.
Double Fisherman's Knot
Basic terms used in our knot tying instructions explained here
How To Tie A Double Fisherman's Knot
Lay two bitter ends, about 12" each, next to each other.
Wrap one end around both ropes two full turns towards the mid-point of your overlap
Pass the end through the two turns (away from the mid-point).
To complete the Knot, do this same thing with the other end you have laid out winding in the opposite direction from your first wrap.
Snug up each of the knots that you have created.
When finished, pull on both ropes to slide the two knots together.
Return to:  Knots
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This knot can be difficult to untie once it has been put under pressure, especially if it has become wet.
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