Page 24 - Geoffrey Budworth, Jason Dalton "The Little Book of Incredibly Useful Knots"

Double fisherman’s knot

The double fisherman’s knot is a stronger version of the fisherman’s bend and has less tendency

to slip. This knot and a triple-wrap version are commonly used in mountaineering and rock
climbing.

Begin with the two working ends overlaying each other and facing in opposite directions (1). In
your right hand take the working end that is pointing away from you. Wrap it twice around the

other line, making an X on the rope. Then feed the working end through the wraps beneath the X
and pull tight (2). Rotate your work so that you can repeat the procedure with the opposite line (3).
Pull the standing ends away from each other to draw the knots together (4). A proper double
fisherman’s knot will have the two knots meshing closely, with the Xs on the same side.