If a green and a white light are visible then another craft is approaching you from the port left side.
Visible white green and red lights on a boat.
White lights are masthead lights or stern lights on the back of the boat.
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.
When white and green lights are visible you are approaching the starboard side of a powerboat.
They make the boat visible at night.
Finally you need one pair red and green sidelights that are visible across 112 5 degrees and from a distance of one mile.
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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.
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.
Alternatively for sailboats of that are over 7 meters in length they can display what is called a tricolor light.
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A steady green light marks the starboard right.
Unit 5 of 6 topic 4 of 6.
When the masthead light and the stern light are combined that makes up 360 degrees.
What do visible white green and red lights indicate.
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The stern light needs to be visible across 135 degrees and from two miles away.
A stern light which is a white light at the rear 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.
You are the give way craft and must yield right of way to the sailing vessel.
Port sidelights are red starboard sidelights are green and both shine from dead ahead to 112 5 aft on either side.
You are approaching a powerboat head on.
All other lights.
All other lights must be visible for 2nm.
Stern lights are white and shine aft and 67 5 forward on each side.
Give way to your starboard side.
A pair of red and green sidelights that are visible 112 5 degrees and can be seen at least one mile away.
A steady yellow light marks the stern back of a tug pushing barges.