What efficiency rating is associated with a bowline knot?

The efficiency rating associated with a bowline knot is often considered to be around 60-70%. Specifically, many sources cite the efficiency at approximately 70%, which means that when this knot is used, about 70% of the rope's strength is retained. This is due to the way the bowline knot preserves the integrity of the rope while creating a fixed loop at the end.

The bowline knot is favored for its strength and reliability because it does not slip or bind under load, making it extremely useful in various applications, such as sailing, climbing, and rigging. The knot's design allows it to maintain a strong hold while being relatively easy to untie after being loaded, which is another reason for its popularity.

This efficiency rating is important for practitioners in fields such as rigging and climbing because it directly impacts safety considerations. Understanding the strength characteristics of different knots enables individuals to choose the appropriate knot for specific tasks, maximizing both safety and effectiveness in various scenarios.