When the masthead light and the stern light are combined that makes up 360 degrees.
Visible white green and red lights on a boat.
Boat over 20m 65 7 and less than 50m 164 must display a masthead light visible for 5nm.
Finally you need one pair red and green sidelights that are visible across 112 5 degrees and from a distance of one mile.
Unit 5 of 6 topic 4 of 6.
The stern light needs to be visible across 135 degrees and from two miles away.
Stern lights are white and shine aft and 67 5 forward on each side.
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The lights are screened shielded so that each light is only visible from a certain range of directions if you are on a boat and can see the red green and white navigational lights from another.
White lights are masthead lights or stern lights on the back of the boat.
If you meet a vessel and see a green and red light but no masthead white light then you are approaching a sail driven vessel.
Alternatively for sailboats of that are over 7 meters in length they can display what is called a tricolor light.
A white stern light located at the rear of the boat that is visible at 135 degrees and can be seen from 2 miles away.
You are the give way craft and must yield right of way to the sailing vessel.
All other lights.
A steady yellow light marks the stern back of a tug pushing barges.
All other lights must be visible for 2nm.
When only a red light is visible you are approaching the port side of a sailboat.
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A steady red light marks the port left side of a boat.
When you are in a power driven pleasure craft and you see a red a green and a white light you are approaching another power driven vessel head on and both vessels must give way.
If a green and a white light are visible then another craft is approaching you from the port left side.
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When white and green lights are visible you are approaching the starboard side of a powerboat.
They make the boat visible at night.
What do visible white green and red lights indicate.
A steady green light marks the starboard right.
You are approaching a powerboat head on.
A stern light which is a white light at the rear of the boat.
Give way to your starboard side.