A simple and secure bend consisting of two overhand knots. The Fisherman’s knot is especially good for thin threads, but not recommended for thick nylon ones. The knot is compact, easy to tie even with wet hands and very difficult to untie. It is extensively used in fishing.
ABoK #293, #1414
Cross the 1st running end over the standing part to make a loop.
Pass the end through the loop to make an overhand knot.
Thread the 2nd running end through the loop.
Continue around the 1st standing part.
Pass through the second loop to make another overhand knot.
Tighten the knot.
The fisherman’s knot is complete.