What does a green light on a vessel indicate?

A green light on a vessel is part of a system of navigation lights that help determine a vessel's orientation and present situation during nighttime or low visibility conditions. Specifically, a green light indicates the starboard (right) side of the vessel when viewed from the bow.

In the context of navigation rules established internationally and by maritime authorities, this light helps other vessels identify the direction the marked vessel is facing and its status. If a vessel is showing a green light, it often suggests that the vessel is in a position to either proceed or maneuver. When a green light is visible, it can indicate that a vessel is approaching on the right side, and this may necessitate that other vessels give way based on traffic conditions.

The other options, while relevant to various vessel operations and classifications, do not accurately reflect the specific meaning or implication of a green light. The stand-on vessel is typically the one with the right of way, but that doesn't specifically relate to its lighting. Under sail implies a vessel is using only its sails, which may not be confirmed by just the color of visible lights. Similarly, a green light does not specifically indicate involvement in fishing activities, which is usually represented by a different specific set of lights. Thus, recognizing the meaning of