Bowline

The bowline forms a fixed, non-slipping loop at a line’s end and is called the king of knots for its strength, security, and ease of untying after load. It is tied by passing the working end up through a small loop (the rabbit out of the hole), around the standing part, and back down through the loop. It holds about 60 to 70 percent of the rope’s rated breaking strength and can shake loose under cyclic or slack loading, so it is often backed with a half-hitch or stopper.