What is the term for the running or free end of a line?

The term for the running or free end of a line is referred to as the working end. This is the part of the line that is actively being manipulated for tying knots, making adjustments, or securing objects. Understanding this terminology is crucial for effective communication and is fundamental for tasks involving lines in maritime operations.

In contrast, the standing part of a line is the section that is not being used for active work, often secured or tied off. The loop end is not a standard term in nautical contexts and may refer to a specific type of knot but does not indicate the free or running end. The term free end is not commonly used in the same context as working end and may create confusion. Thus, "working end" is the correct terminology that accurately describes the dynamic, usable part of the line in various nautical applications.