How to Tie a Square Knot

How to Tie a Square Knot. Watch this video to learn how to tie a square knot, also known as a reef knot. This knot dates back to about 1794, when it was used to “reef” sails on ships, which means to tie part of the sail down to reduce its effective surface area in strong winds.¹

Common uses of the square knot include tying 2 ends of one line around an object, such as a pole, or a bundle of material. It can also be used to tie belts or sashes. It is one of the most important knots used in Scouting, all over the world. It is an easy knot to learn and to use, however, it isn’t appropriate for all situations. (see note below)

Note: The knot isn’t a good choice for tying 2 ropes together, or for situations where the knot must bear weight. It isn’t the most secure knot, and can easily come undone, which can be a real safety hazard.

¹ Wikipedia, “Reef Knot”