Pierrepoints

Pierrepoints are a type of knot used in sailing and climbing. They are known for their security and ability to be untied easily, even after being subjected to significant load. The knot is formed by creating a series of turns around a standing part of a rope, which then cinches down and holds the knot in place. This construction makes it resistant to slipping, a crucial characteristic for safety in applications where the rope might be under tension.

The name "pierrepoint" is believed to derive from the French word "pierre," meaning stone, likely referring to the knot's steadfastness. Its construction involves a bight of rope passed around an object, then looped back and around the standing part multiple times before being secured. The number of wraps can vary depending on the desired holding power and the type of rope being used.

Pierrepoints are particularly valued for their "release" quality. Unlike some other secure knots that can become almost impossible to untie after bearing weight, a well-tied pierrepoint can often be loosened with relative ease. This makes them a practical choice in situations where a knot needs to be both secure during use and readily adjustable or removable afterward. They are often employed in situations where a temporary but strong fastening is required.