During which circumstances should a boat operator use navigation lights?

A boat operator should use navigation lights in any condition of reduced visibility because these lights are critical for ensuring the safety of all waterway users. Conditions of reduced visibility can include nighttime, fog, rain, or any circumstance where objects on the water are hard to see. By using navigation lights, the operator makes their vessel visible to others, which helps prevent collisions and provides clear information about the vessel's position, direction, and type.

In circumstances where operators might believe it is unnecessary to use navigation lights, such as docking at night or during the day when the visibility is good, the risk of accidents increases. Additionally, not using lights when there are no other vessels around does not account for the possibility of other boats appearing unexpectedly or the presence of obstacles in the water.

Using navigation lights consistently, regardless of the time of day or the apparent presence of other vessels, is essential for safe boating practices and compliance with maritime laws.