What is the ER of a bowline?

Prepare for the Southeast Lineman Training Center Exam with quizzes and detailed explanations. Enhance your skills and knowledge through interactive tests. Get exam-ready!

Multiple Choice

What is the ER of a bowline?

ER stands for the efficiency rating, which is how much of the rope’s original breaking strength remains when the rope is tied into a knot and loaded. For a bowline, testing and standard references place that efficiency around 65%, meaning about two-thirds of the rope’s strength is retained under load. This is why 65% is the best choice here. The higher numbers would imply a knot that preserves more strength, while the lower number would indicate less preservation; the bowline is typically in the mid-60s range rather than at the very high or very low ends.

ER stands for the efficiency rating, which is how much of the rope’s original breaking strength remains when the rope is tied into a knot and loaded. For a bowline, testing and standard references place that efficiency around 65%, meaning about two-thirds of the rope’s strength is retained under load. This is why 65% is the best choice here. The higher numbers would imply a knot that preserves more strength, while the lower number would indicate less preservation; the bowline is typically in the mid-60s range rather than at the very high or very low ends.

More practice questions