Under the Rules, when two power-driven vessels are approaching head-on, what action should they take?

When two power-driven vessels are approaching each other head-on, the correct action for both vessels under the Rules of the Road is to alter their courses to starboard. This maneuver is designed to minimize the risk of collision by ensuring that both vessels pass each other on their port sides. This approach, changing course to starboard, is a standard rule that promotes safe navigation and clear communication between vessels, as the predictable nature of turning right reduces confusion during such encounters.

The rationale for this action is rooted in the principles of safe navigation, which emphasize the importance of avoiding situations where two vessels could approach each other directly. By both turning to starboard, they create a safer passage and significantly reduce the likelihood of collision.

In contrast, maintaining course or turning in opposite directions without a mutual decision to alter course could lead to unpredictable situations and potential collisions. Speeding up, while seemingly a quick resolution, increases the risk by reducing the maneuverability and time needed to react to changing situations. Thus, changing course to starboard is the recommended practice to ensure safety while navigating head-on encounters.