What is the drag circle in relation to anchoring?

The drag circle in anchoring refers to the area that encompasses the maximum potential movement of the boat while at anchor. It is determined by the length of the anchor rode, which contributes to the radius of the drag circle. Therefore, the correct understanding is that the radius of the drag circle is indeed related to the distance from the anchor to the pelorus, which represents the pivot point of the vessel's movement around the anchor.

When a vessel is at anchor, any force exerted on it, such as wind or current, may cause it to move in an arc around the anchor point. The pelorus serves as a reference point, and thus the distance from the anchor to this point defines the radius of potential movement, helping mariners understand how far the vessel can swing while maintaining a safe distance from nearby hazards.

The other choices deal with different aspects of anchoring, but they do not accurately define the drag circle. For example, the total area encompassing drag potential would be too broad and not specifically measured by the anchor's distance to the pelorus. Similarly, while wind velocity and water depth are important factors in anchoring, they do not directly define the radius of the drag circle.

Thus, focusing on the correct relationship to the anchor gives