In cases of restricted visibility, which action is least recommended?

In situations of restricted visibility, making rash course changes is the least recommended action due to the potential for increased confusion and risk of collision. Sudden or hasty maneuvers can lead to unpredictable movements that may not be observed by other vessels, making it difficult to maintain safe navigation. The primary goal during restricted visibility is to ensure safety through measured and compliant actions.

Using radar is highly encouraged because it allows for better situational awareness and helps in tracking other vessels that may not be visible. Slowing down is also a critical action to increase reaction time and lower the risk of collision by allowing for more deliberate navigation. Decreasing crew numbers is generally not advisable, as a well-manned crew is essential for maintaining effective communication and managing navigational duties, especially in challenging conditions.