A vessel engaged in trawling must display which lights at night while underway?

A vessel engaged in trawling must display specific lights to communicate its activity to other vessels at night. The correct lights are displayed as green over white. The green light indicates that the vessel is engaged in the fishing activity of trawling, while the white light serves as an all-around light, indicating the vessel’s presence and ensuring that it is visible to others.

The combination of these colors plays a crucial role in navigation and safety, helping other boats recognize the vessel's fishing operations and ensuring that they maintain a safe distance. This is especially important in busy waterways where various types of vessels operate simultaneously.

It's crucial to recognize that other arrangements of lights do not represent a trawling vessel's status. The lights serve a specific function in maritime contexts, making it essential to display them correctly. Knowledge about these light configurations contributes to safe navigation practices at night and helps prevent collisions by ensuring that all marine traffic understands the surrounding vessels’ intentions and activities.