Fisherman's knot

Fisherman's knot
NamesFisherman's knot, Waterman's knot, Angler's knot, Englishman's knot, True lover's knot
CategoryBend
OriginAncient
RelatedOverhand knot
ReleasingJamming
Typical useJoining lines
CaveatDifficult or impossible to untie after loading
ABoK#293, #1414
Double fisherman's knot
NamesDouble fisherman's knot, Grapevine knot, double Englishman's knot
CategoryBend
OriginAncient
Relateddouble overhand knot
ReleasingJamming
Typical useJoining lines, backing up critical knots such as the figure-of-eight loop or figure-of-eight follow through
CaveatDifficult or impossible to untie after loading
ABoK#294, #1415, #498
Triple fisherman's knot
NamesTriple fisherman's knot, Triple fisherman's bend
CategoryBend
OriginModern
RelatedDouble overhand knot
ReleasingJamming
Typical useJoining lines, particularly in slippery materials
CaveatDifficult or impossible to untie after loading. Uses more material than double fisherman's

The fisherman's knot is a bend, in other words a knot for joining two lines. The double fisherman's knot and triple fisherman's knot versions of the knot are variations used in climbing, arboriculture, and search and rescue. The difference between the three variations is the number of turns in the overhand knots that form the completed bend.

The bend consists of two overhand knots in their strangle knot form, each tied around the standing end of the other. For the double fisherman's variation a double overhand knot is used, while the triple variation adds a third turn. The knot is known for its strength and reliability when used correctly.

The (single) fisherman's knot is also known as the angler's knot, English knot, halibut knot, waterman's knot, and true lover's knot. The double fisherman's knot is also known as a grapevine knot.