Fisherman’s Knot

The Fisherman’s Knot is used to join two ropes of equal size. It consists of two overhand knots, each tied around the standing part of the other. It is compact and very easy to tie. If more holding strength is required, the overhand knots can be made with more turns, as in the double fisherman’s knot. 

The double version is the knot used to join the two ends of the same line to form a Prusik knot, which we’ll also learn in this section. 

There is one drawback of this knot: in extreme cases it can lock up so tightly that it is effectively welded.