Page 365 - Bob Holtzman "The Field Guide to Knots How to Identify.."

42. Spanish Bowline

Also known as: French Bowline, Double Forked Loop, Chair Knot

This is another double-looped bowline on a bight, offering nearly double
the strength of a single Bowline plus the ability to spread a load evenly
across two loops. The loops will not shift or tighten under load, and with
one’s legs placed through the loops, it makes a good bosun’s chair or rescue
harness, although you have to hold onto the standing parts (or tie your
upper body to them with another piece of line) to keep from falling out
backward.

Uses: lifting large heavy loads, bosun’s chair, or rescue harness

Pros: loops will not shift under load
Cons: difficult to tie with loops of unequal size

Instructions

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