In what situation should a Coxswain sound an emergency whistle signal?

A Coxswain should sound an emergency whistle signal primarily in situations of limited visibility or to signal distress. The emergency whistle is intentionally designed to draw attention and communicate that assistance is needed, making it a crucial tool in emergencies. In conditions such as fog, rain, or darkness—where visibility is reduced—using a whistle allows the Coxswain to alert other vessels or nearby responders to the potential danger.

Moreover, the use of a whistle as a distress signal serves as an effective means of communication even if visual contact cannot be established. This is vital for ensuring that those nearby can respond appropriately to the situation at hand. The emergency whistle is a universal signal that is easily recognized and understood by mariners.

The other situations presented do not align with the primary purpose of the emergency whistle. Approaching another vessel may not warrant a whistle unless a specific unsafe condition exists. A fire on board, while serious, would typically require other emergency actions, such as alerting the crew or activating fire suppression systems, rather than relying solely on a whistle. Maneuvering in shallow waters requires careful navigation and situational awareness but does not necessitate the use of an emergency whistle unless an emergency arises. Thus, understanding the correct context for using an emergency whistle is crucial