What is red green and white lights on a boat mean?

On a boat, the red and green lights indicate the vessel's navigation direction at night. The red light is positioned on the port (left) side, while the green light is on the starboard (right) side. The white light, typically located at the stern or on the mast, indicates the boat's overall position and is visible from all directions. These lights help other vessels identify the boat's orientation and movements in darkness or low visibility situations.