When two power vessels are meeting head-on, what is the appropriate action for both vessels?

When two power vessels are meeting head-on, the appropriate action for both vessels is to keep right. This guideline is rooted in the navigation rules that aim to reduce the risk of collision at sea. By keeping to the right, both vessels follow the convention similar to that of vehicles on a road, where they pass each other on the starboard (right) side.

This practice helps to ensure a clear and predictable movement pattern, allowing both vessels to navigate safely around each other. Furthermore, in maritime contexts, these rules are designed to enhance situational awareness and promote safe passage in crowded waterways or when encountering other vessels.

Options such as stopping immediately or accelerating could create confusion or increase the risk of collision, while keeping left would not abide by the established maritime navigation conventions, potentially leading to dangerous situations. Therefore, the correct action is for both vessels to keep right for the safety and clarity of navigation.