How to Tie the Double Surgeon’s Knot (Bend)

 

Usage

The Double Surgeon’s Knot (Bend) is commonly used to join two lines or ropes, particularly in fishing for connecting fishing lines of similar diameter. Compared to the standard Surgeon’s Knot, this variation adds an extra wrap for increased strength, making it ideal for secure connections. Its simple structure suits quick tying, but it can be bulky and may jam under heavy loads. This knot is a favorite for anglers and utility tasks.

Why Learn the Double Surgeon’s Knot (Bend)?

Its robust design ensures strong line connections. This knot is a reliable choice for anglers and outdoor enthusiasts needing secure joins. It offers high strength, ease of tying, versatile use, secure grip, and quick setup.

Common Uses

• Fishing:
  • Joins fishing lines for extended length or leader attachment.
  • Connects monofilament or fluorocarbon lines securely.
• Utility:
  • Ties ropes for bundling or securing light loads.
  • Joins cords for temporary setups in workshops or households.
• Camping:
  • Connects ropes for shelter ridgelines or gear repairs.
  • Secures lines for lightweight tarp setups.

 

ABOK Number  (Ashley Book of Knots)  1209 (Variation of Surgeon’s Knot)   Other Names None listed   Category Bends

 

Notable Features

• High Strength: Extra wrap enhances security for moderate loads.
• Easy to Tie: Simple overhand knot structure, quick to learn.
• Versatile Use: Suits fishing, camping, and utility line-joining tasks.
• Secure Grip: Holds well for lines of similar diameter.
• Quick Setup: Fast to tie, even in low-light or wet conditions.

Variations

Surgeon’s Knot vs. Double Surgeon’s Knot (Bend)

• Pros: Simpler and less bulky, faster to tie.
• Cons: Less secure under heavy loads compared to the double variation.

Similar Knots

Double Fisherman’s Bend vs. Double Surgeon’s Knot (Bend)

• Pros: Extremely secure for permanent joins, especially in climbing.
• Cons: Harder to untie and bulkier than the Surgeon’s Knot.

Blood Knot vs. Double Surgeon’s Knot (Bend)

• Pros: Sleeker profile, ideal for fishing line connections.
• Cons: More complex to tie and less forgiving with mismatched line diameters.

History

The Double Surgeon’s Knot (Bend), a variation of the Surgeon’s Knot, likely originated in medical contexts where surgeons used it to tie sutures securely. Referenced in The Ashley Book of Knots (#1209) as a bend, its adaptation for fishing and utility tasks reflects its simplicity and strength. Its popularity in angling stems from its ease of tying in wet conditions, making it a staple for joining lines.

Security Level

The Double Surgeon’s Knot (Bend) is highly reliable for joining lines of similar diameter, particularly in fishing, with its extra wrap providing added strength over the standard Surgeon’s Knot. It holds well under moderate tension but may jam or slip with significantly mismatched lines or heavy loads. For critical applications, test the knot and consider trimming tag ends carefully to avoid unraveling.

Downsides

• Bulky profile: Larger than sleeker knots like the Blood Knot, less ideal for fine lines.
• Jamming risk: Can be hard to untie after heavy loads, especially with thin lines.

Structure

1. Lay the ends of the two lines parallel, overlapping by several inches.
2. Treat both lines as one and tie a double overhand knot by looping the ends around the standing parts twice.
3. Pass the ends through the loop again for a second wrap, creating a total of four wraps.
4. Pull all four ends (two standing parts and two working ends) to tighten the knot.
5. Trim the tag ends close to the knot for a neat finish, ensuring no slippage.

Pro Tip: Wet the knot before tightening to reduce friction and ensure a snug fit.

FAQ

Is the Double Surgeon’s Knot (Bend) strong enough for heavy loads?

It’s reliable for moderate loads in fishing or utility tasks, but test with heavy loads first.

What lines work best for the Double Surgeon’s Knot (Bend)?

Monofilament, fluorocarbon, or similar-diameter ropes ensure strength and stability.

How does the Double Surgeon’s Knot (Bend) compare to the Blood Knot?

It’s easier to tie but bulkier and less streamlined for fishing lines.

Can the Double Surgeon’s Knot (Bend) be used for climbing?

No, it’s not suitable for climbing or life-support applications; use climbing-specific knots instead.

Why choose the Double Surgeon’s Knot (Bend) over the Double Fisherman’s Bend?

It’s faster to tie and easier to untie, though less secure for permanent joins.

Important Notes on Safety

Common failure points include mismatched line diameters or insufficient tightening, which can cause slipping. Always verify the knot is used for appropriate tasks and correctly tied. Inspect lines for wear or damage before tying. Wet the knot before tightening to reduce friction and ensure security. Practice tying in low-risk settings to ensure proficiency.