The port side of a boat must display a red light at night. This color is standardized by maritime regulations to indicate the left side of the vessel to other boats. The red light is visible from a distance and helps prevent collisions by allowing other vessels to determine the orientation of the boat.
you must have at least 1 white light
RED
white
Turn on an all-around white light when anchoring your boat.
white
Left side, port, red light.Right side, starboard, green light.
Red
white
Red
The color light that must show on the starboard side of a boat is green. This green light is part of the navigation lights used to indicate the direction the vessel is facing and helps prevent collisions at night or in low visibility conditions. The starboard (right) side green light is typically visible from 112.5 degrees, along with other navigation lights on the vessel.
When operating a powerboat at night, the port side(left side) should display a red light. The starboard side(right side) should display a green light.
Red