Double Bowline

( Round Turn Bowline | Double-Knotted Bowline | ABOK #1013 )

Animation: Double Bowline

Usage

The Double Bowline is one of two typical tie-in knots used in climbing, along with the Figure Eight Loop. An advantage of the Double Bowline over the Figure Eight is it is easier to untie after being weighted in a fall. Sport climbers who take multiple lead falls and then have trouble untying their figure eights commonly use the Double Bowline instead. However, the Double Bowline is less secure than a Figure Eight.

Warning

Verify tying technique with a skilled instructor where knot failure could cause property damage, injury, or death.

Also known as

  • Round Turn Bowline
  • Double-Knotted Bowline

ABOK

  • 1013

Structure

Instead of the single turn of the standard Bowline, the Double Bowline uses a second turn or 'round turn'.

Strength/Reliability

Though more secure than the standard Bowline, the Double Bowline is less secure than a Figure Eight Loop. Efficiency is rated at 70-75%.