If you see red green and white lights on another boat what does that tell you?

Seeing red, green, and white lights on another boat indicates its position and direction of travel. The red light, located on the port (left) side, and the green light on the starboard (right) side help determine the boat's orientation. If the white light is visible, it typically means the vessel is either anchored or moving away from you. This arrangement helps you navigate safely and avoid collisions at night.