Under the Rules, lights required must be shown when operating in restricted visibility.

Under the Rules, lights required must be shown when operating in restricted visibility.

• A. False
• B. True
• C. Only during daylight
• D. Only when anchored

Answer: (B)

The key idea is that when visibility is restricted, you must display the lights prescribed for your vessel to signal your presence and status to other ships. The Rules require showing these lights whenever visibility is restricted, not just at night or in calm conditions. This helps others judge your vessel’s course, speed, and whether you’re under way or anchored, so safe passage can be maintained even in fog, mist, or smoke. So, stating that lights required must be shown in restricted visibility is correct because the lighting rules apply specifically to those conditions to prevent collisions.

The key idea is that when visibility is restricted, you must display the lights prescribed for your vessel to signal your presence and status to other ships. The Rules require showing these lights whenever visibility is restricted, not just at night or in calm conditions. This helps others judge your vessel’s course, speed, and whether you’re under way or anchored, so safe passage can be maintained even in fog, mist, or smoke. So, stating that lights required must be shown in restricted visibility is correct because the lighting rules apply specifically to those conditions to prevent collisions.