What is the responsibility of a power-driven vessel when navigating in restricted visibility?

The responsibility of a power-driven vessel when navigating in restricted visibility is to maintain a safe speed adapted to conditions. This is critical for several reasons. In conditions such as fog, heavy rain, or darkness, visibility can significantly hinder a vessel's ability to see other ships, navigational aids, or hazards.

By maintaining a safe speed, the vessel can react more effectively to potential dangers, allowing time to maneuver or stop if necessary to avoid collisions. This approach supports adherence to the "Rules of the Road," specifically Rule 6 of the International Regulations for Preventing Collisions at Sea (COLREGs), which emphasizes the importance of safe speed in any condition that impairs a vessel’s ability to navigate safely.

Simply anchoring until visibility improves may not always be practical or safe, as other vessels might still be navigating the area, potentially leading to unintended collisions. While relying solely on radar might seem adequate, it is not a substitute for situational awareness and sound judgment in navigation. Maximum speed is inappropriate in reduced visibility, as it increases the risk of collision. Therefore, maintaining a safe speed adapted to conditions is the most prudent and responsible course of action.