Reef knot
Videos
The reef knot, or square knot, is an ancient and simple binding knot used to secure a rope or line around an object. It is sometimes also referred to as a Hercules knot or Heracles knot. The knot is f
Photo of a tightened reef knot
singly slipped reef knot
Detail of Egyptian statue dating from 2350 BC depicting a reef knot securing a belt
Ancient Greek jewelry from Pontika (Ukraine), 300 BC, in the form of a reef knot
Constrictor knot
Videos
The constrictor knot is one of the most effective binding knots. Simple and secure, it is a harsh knot that can be difficult or impossible to untie once tightened. It is made similarly to a clove hitc
Left: constrictor knot Right: double constrictor knot
1 : Both hands holding the rope, thumbs are used to form a Z with the rope
2 : thumbs with the rope are rotated 90 degrees to cross each other forming loops
3 : The resulting two loops are folded around the crossing point and held together.