Double Fisherman's Knot

The fisherman's knot is a knot—specifically a bend—that joins two lines. The double fisherman's knot and triple fisherman's knot are variations used in climbing, arboriculture, and search and rescue. The knot is also commonly used in fishing and medicine.

The difference between the three variations is the number of turns in the overhand knots that form the completed bend.

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Source: Wikipedia · Image: Wikimedia Commons · CC BY-SA 2.5

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