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A white masthead light must be shown when a powerboat is operating at night.
When operating a powerboat at night white light should be shown on the stern and red and green lights on the bow.
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
It means the boat is coming straight toward you.
If you are operating a powerboat at night your green side light must be visible to boats approaching over an arc of the horizon 112.5 degrees and so fixed as to show the the light from right ahead to 22.5 degrees abaft of the beam on its respective side.
That what you see is a sailboat. The green light means you must give way.
If you see both the bow lights, the approaching ship is coming at you head-on.
You are looking at the starboard side of the other boat.Starboard is green.Port is red.
You are looking at the starboard side of the other boat.Starboard is green.Port is red.
That what you see is a sailboat. The green light means you must give way.
Only that you are seeing its' starboard (right) side.