Double surgeon's knot
Also called: surgeon's knot, surgeon's join
Joins two lines, also of different diameter. Quick to tie.
- Use
- Line to line and leaders
- Lines
- Monofilament, Fluorocarbon
- Difficulty
- Easy
White: one line. Grey: the other line. Orange: the tag end being tied. Mirror flips the drawing for tying left-handed.
Steps
Lay the two lines side by side, overlapping by about 15 cm, ends pointing in opposite directions.
Treat the overlap as one line and make a loop. Pass the whole leader and the tag of the main line through the loop.
Pass the same two ends through the loop a second time.
Wet the knot, pull all four ends to tighten, and trim both tag ends.
Tips
- Pull all four ends to tighten it.
- Works with lines of different diameter.
Sources
Each step was checked against these written guides:
- Pennsylvania Fish & Boat Commission, Knotes on Knots (Texas A&M AgriLife Extension)
- Bass Pro Shops Fishing Knot Library (Pro-Knot), Surgeon's knot
- Orvis UK, Fly fishing knots: mastering the essentials
Drawings and animation by Fishwake. We give no breaking-strength figures: published numbers differ with the line and the test.
