Uses
The double bowline is one of two typical tie-in knots used in climbing, along with the Figure eight loop. The advantage of the double bowline over the figure 8 is it is easier to untie after being weighted in a fall.
The double bowline is commonly used by sport climbers who take multiple lead falls and then have trouble untying their figure eights. The disadvantage of the double bowline is that it is less secure than a figure eight knot.
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