How to Tie the Spanish Bowline

How to Tie the Spanish Bowline

Usage

The Spanish Bowline forms two secure loops that can be adjusted independently, making it ideal for light rescue work, arborist tasks, and lifting applications. Commonly used for suspending ladders or as a makeshift Bosun’s chair, it’s versatile yet requires careful tightening to avoid slippage.

Want to see the tuck order in 3D before you pick up a rope? The Knot IQ app lets you rotate through each step of the Spanish Bowline at your own pace.

Why Learn the Spanish Bowline?

The Spanish Bowline offers flexibility with its adjustable loops, making it suitable for various tasks requiring balanced load distribution. Its elegant design and versatility are perfect for rescuers, arborists, and bushcraft enthusiasts.

It is also a knot that rewards repetition — the tuck order is easy to lose if you only tie it once a season. A short length of practice cord and the illustrated Knot IQ Companion Kits give you something to work from at the bench rather than mid-job.

Common Uses

• Rescue Operations:
  • Lifting conscious individuals with loops around their legs.
  • Securing unconscious individuals with loops around their armpits and knees.
• Arborist Work: Hoisting tools or stabilizing loads.
• Bushcraft and Camping: Suspending equipment or creating fixed points.
• Ladder Suspension: Used by carpenters to suspend ladders securely.

The two-loop lifting arrangement above — one loop under the legs for a conscious casualty, loops at the armpits and knees for an unconscious one — is the use Wikipedia’s Spanish bowline entry describes as well, along with its use as a makeshift Bosun’s chair.

Notable Features

• Double Loops: Each loop can be adjusted independently.
• Non-Jamming: Easy to release even after being loaded.
• Versatile: Effective for lifting, hoisting, and stabilizing tasks.
• Tied in the bight: It can be formed anywhere along a rope without access to either end, which is what makes it useful as an improvised seat.

Similar Knots

Fireman’s Chair Knot vs. Spanish Bowline

• Pros: The Fireman’s Chair Knot is easier to tie and less prone to slippage, and it is the form modern rescue writing generally names first for a two-loop seat.
• Cons: Lacks the symmetry and elegance of the Spanish Bowline.

Portuguese Bowline vs. Spanish Bowline

• Pros: The Portuguese Bowline simplifies the tying process, and its loops can still be resized after the knot is loaded.
• Cons: Less elegant with loops not independently secured — rope can migrate from one loop into the other under uneven load.

Perfection Loop vs. Spanish Bowline

• Pros: Compact and secure for fishing and rigging — see the Perfection Loop guide.
• Cons: Not designed for dual-loop applications.

Directional Figure Eight vs. Spanish Bowline

• Pros: The directional in-line figure eight is a strong loop knot for parallel loads.
• Cons: Lacks the adjustability of dual loops.

Double Bowline vs. Spanish Bowline

• Pros: The Double Bowline is faster to tie with reliable load handling.
• Cons: Less symmetrical compared to the Spanish Bowline, and it makes one reinforced eye rather than two working loops.

History

The Spanish Bowline’s documented history is shorter than its sailing-ship reputation suggests. The earliest confirmed reference to it by name is Overholt’s 1922 farm-rope circular The Use of Rope on the Farm, which describes it as a double loop formed at a point along a rope, each loop free to take its own post or hook. Clifford Ashley catalogued it definitively in 1944 as ABOK #1087 in The Ashley Book of Knots, calling it “presumably a sailor’s knot, and possibly an old one” — while admitting he had not managed to find any earlier reference to it himself. No inventor and no Iberian origin has ever been documented; the name is all that connects it to Spain.

Security Level

While secure when properly tightened, the Spanish Bowline requires balanced loading on both loops to prevent slippage. Ensure the knot is drawn tightly for maximum reliability. Under unequal loading, rope can migrate from one loop into the other, which is why it is dressed firm before anything is put on it.

Downsides

• Can Slip: If not tightened properly.
• Requires Equal Loading: On loops to maintain security.
• Complex to Tie: Compared to simpler alternatives.
• Not a rated life-safety knot: It does not appear in the current life-critical and firefighter skill-sheet knot lists, so it belongs to improvisation and light work, not to rigged rescue systems.

Structure

1. Create a loop at the rope’s end and tuck it under parallel lines.
2. Twist each side of the loop inward, forming two smaller loops.
3. Insert the left loop through the right loop, moving under and then over the ropes.
4. Pull the new lower loop’s sides through the upper loops.
5. Tighten by pulling the vertical ropes while adjusting the loops.

Pro Tip: Set the two loops to the length you actually need before you draw the knot up. Once it is tight, resizing means slackening the whole thing off and starting the dressing again.

FAQ

What is the Spanish Bowline used for?

It’s used for rescue, lifting, arborist work, and as a Bosun’s chair alternative.

Is the Spanish Bowline secure?

Yes, but it must be tightly drawn, with balanced loading on the loops.

Can the loops be adjusted?

Yes, the loops can be resized before tightening the knot.

How does it compare to the Portuguese Bowline?

The Spanish Bowline’s loops are independently fixed, providing more stability than the Portuguese Bowline.

Is it easy to untie?

Yes, it’s non-jamming and can be untied even after bearing a load.

Important Notes on Safety

The Spanish Bowline is a reliable knot for non-life-critical applications. Always ensure equal loading on both loops and tighten the knot thoroughly to prevent slippage. Do not confuse it with ABOK #1084, the two parallel round loops Ashley sets beside it: that knot’s loops sit parallel where the Spanish Bowline’s fork and splay apart, and it is built on a different structure entirely.

Practise it cold, on a bench, before you ever need it in a hurry — the Bear Essentials Knot Tying Kit is built for exactly that kind of repetition.