Bowline on a Bight
Also known as:Double Bowline
Description
The bowline on a bight creates two fixed, non-slip loops in the middle of a rope without using the ends. It is a versatile midline loop knot that shares the bowline's reliability. Both loops are identical in structure to a standard bowline but share the standing ends.
Common Uses
Used in climbing, rescue, and rigging to create a secure attachment point in the middle of a rope for clipping carabiners or suspending loads.
When to Choose This Knot
Choose this knot when you need a loop that can connect to a post, ring, hook, carabiner, handle, or another rope part. Loop knots differ in whether they stay fixed, cinch down, or remain easy to untie after loading.
Safety Notes
- Confirm whether the loop is intended to be fixed or sliding before applying load.
- For climbing or rescue, use only knots and rope systems approved by your training program or local standard.
- Check that the standing part, tail, and loop are oriented correctly before loading.
How to Tie
- 1Form a bight in the middle of the rope.
- 2Tie a loose figure-eight knot with the bight.
- 3Pass the bight around the standing part and back through the figure-eight.
- 4Pull the bight through to form two loops.
- 5Adjust the loops to the desired size.
- 6Pull the standing ends to tighten and dress the knot.
Common Mistakes
- Confusing a fixed loop with a noose or running loop.
- Loading the loop from an unintended angle.
- Skipping a backup knot where the application requires one.