Page 31 - Cliff Jacobson - Outdoor Knots

Figure 11. Butterfly Noose (right-handed only)

Mountain climbers use the butterfly noose to attach carabiners or whenever they
need a nonslip loop in the middle of a rope. Butterfly loops are secure and will
accommodate a load in any direction. They can be spaced along a line to provide
purchase points for a winch line—essential in canoe rescue work. Need to pull a
long rope tight? Evenly spaced butterfly nooses will give each person a secure
handhold. The knot is also handy for fastening gut leaders to monofilament
fishing line. Like the bowline, the butterfly noose will not jam, regardless of load
direction. Also called the “lineman’s loop,” this knot was once popular with
telephone line workers.