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

In situations of restricted visibility, making rash course changes is considered the least recommended action due to the potential for confusion and increased risk of collision. When visibility is limited, it is crucial to maintain a steady course and speed unless absolutely necessary to avoid danger. Sudden or erratic maneuvers can lead to misjudgments by other vessels, which may not anticipate your actions in low visibility.

Using radar is highly recommended because it helps detect other vessels and obstacles, even when they are not visible to the naked eye. Slowing down is also a prudent action, as it allows for better reaction time and reduces the chances of collision by giving the navigator more time to assess the situation. While decreasing crew numbers may seem practical, it does not directly contribute to safety in restricted visibility as it could reduce the effectiveness of monitoring navigation aids and responding to potential hazards. Thus, maintaining a stable and predictable navigation approach is essential in such conditions to ensure safety for all vessels involved.