Surgeon’s Loop

Surgeon’s Loop
Preparing the rope…

Double the line

1/6

Make a bight long enough to pass through the knot twice.

Fishing · 6 steps

Make a fixed fishing loop with two passes of a doubled end through one opening.

Also known as Double surgeon’s loop.

The surgeon’s loop begins with doubled line. Instead of taking the folded end through the overhand opening once, pass it through twice. The two passes form the body of the knot while the closed fold remains the usable loop.

Do not confuse this with a surgeon’s join. The loop uses one folded line and leaves one closed eye; the join uses two separate lines. Keep the doubled strands together throughout each pass so the finished knot draws up evenly.

When to use it

  • Make an end loop in a fishing leader or tippet.
  • Prepare one side of a loop-to-loop connection.

Keep in mind

Moisten suitable fishing line and draw all parts evenly before trimming. Line diameter and material affect how the knot seats.

Check your knot

  • The folded end goes through the opening twice.
  • The paired strands remain alongside each other.
  • The eye remains open as the knot is seated.
How to tie Surgeon’s Loop
  1. Double the line

    Make a bight long enough to pass through the knot twice.

  2. Form a loose loop

    Use the doubled line to make an overhand loop.

  3. Pass the bight once

    Take the closed fold through the opening for the first pass.

  4. Pass it through again

    Carry the same fold around and through the same opening a second time.

  5. Draw out the loop

    Pull the closed loop out while keeping the doubled strands together.

  6. Dress the knot

    Moisten fishing line and pull the loop against both free parts. Keep the two passes aligned.

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References & further reading