Which action is advised to avoid a developing risk of collision?

Taking avoiding action if necessary is the recommended course of action to mitigate the risk of collision. The COLREGs emphasize the importance of a proactive approach to navigation and safety at sea. When a risk of collision is identified, it is crucial to assess the situation and implement measures to avoid any potential accidents.

This option represents a fundamental principle of maritime navigation: the necessity to act decisively when the situation calls for it. By taking avoiding action, a vessel is ensuring that it remains a safe distance from other vessels or hazards, thereby fulfilling its responsibility to prevent collisions. This can involve changing course, altering speed, or communicating with other vessels about intentions.

In contrast, merely changing course to starboard might not address the specific risks present, especially if the other vessel's maneuvering patterns are also taken into account. Accelerating to prevent being overtaken could lead to dangerous situations if not carefully considered and might not be the best response to all threats. Staying on the current heading is generally not advisable when faced with a developing risk, as it does not contribute to an active strategy for collision avoidance.