What does a red over white light combination indicate?

The correct interpretation of a red over white light combination indicates that the vessel is anchored. The signaling system for vessels at night uses specific combinations of colored lights to convey their status or activities, and in this case, red over white is specifically designated for vessels that are not under way and at anchor.

Understanding the context of navigation lights is crucial for mariners to communicate their presence and activities to other vessels and for ensuring safety on the water. Each combination of lights serves a distinct purpose, and recognizing red over white as an indication of a vessel at anchor helps prevent potential collisions or misunderstandings in navigation.

In other scenarios, such as a vessel engaged in fishing or restricted in maneuverability, different light configurations apply, which do not include the combination of red over white. A vessel aground would be indicated by a different set of lights. Recognizing these standards is essential for safe navigation and compliance with maritime safety regulations.