Which sign might suggest that the anchor is dragging?

When considering the signs that suggest an anchor might be dragging, feeling vibration in the anchor chain is a key indicator. If the anchor is properly set, the chain will remain relatively stable. However, if the anchor begins to drag, the chain can experience movement or vibration due to change in tension as the boat shifts position or the anchor fails to hold its position.

This situation can arise from factors such as changes in wind direction or strength, currrents, or improper anchoring technique. Understanding this signal is crucial for a mariner to take timely and appropriate action to secure the vessel and avoid potential hazards.

The other options, while relevant to various aspects of anchoring or navigation, do not directly indicate that the anchor is dragging. High tide warnings involve environmental conditions rather than immediate mechanical feedback. Seeing the seabed is often a positive condition for anchoring but does not inherently indicate that dragging is occurring. Similarly, calm water conditions can provide a false sense of security, as even in calm weather, an anchor can fail to hold if not set properly.