Are you looking for the answer come the quizlet or boat Ed test to the inquiry “which side of a boat has a green light at night”, or perform you just want to improve your knowledge of boating through the correct information to aid keep friend safe?

The next of a boat which has a green light in ~ night will constantly be the starboard side. They room designed come be visible to any another approaching vessel from head-on or a side angle and also are required by law.

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So that’s basic enough, however it’s only going come be basic if you have the right to remember which next is which, and what shade lights go on what side.

I’ve formerly blogged some easy ways to remember port and also starboard, but if you don’t have time to click and also read that, this is a short-cut memory trick.

How come remember which side of a watercraft has a green light

The indigenous “port” has 4 letters in it. The word “left” additionally has 4 letters in it. So, all you must remember is the similarity in bespeak to understand the difference in between port and starboard direction on a boat or ship. 

And then to mental which color goes in which next you have this saying: 

There is no RED PORT wine LEFT in the bottle.

Using the last example, the bottom heat is that if you deserve to remember one side, in this instance port, you will then recognize that opposing will apply for starboard.

Why red and green lamp are vital on a boat

Knowing your navigational lights will certainly be key to maintaining safe ~ above the water, v the regulation stating friend must have actually night-time navigation lights on indigenous sunset come sunrise.

By having actually the correct lamp on her boat, other vessels will be able to see you, and also you can see theirs to assist avoiding collisions and accidents.

There are 4 most commonly used various navigational lights required on a boat to help with visibility once darkness has fell.

Image indigenous the terrific website.

Sidelights (aka combination lights)

Also known as mix lights, the next red and green navigating lights room designed come be checked out by other boats, ships and vessels pull close you.

They are collection up so that they space visible no matter what direction an additional vessel is coming in the direction of you, be it from the left, right, side, rear, or head-on.

A red light will certainly be discovered on the port (left hand) side, and a eco-friendly light will certainly be discovered on the starboard (right hand side).


At night, her sternlight have to be shining every the time. It’s placed as close together you can gain it come the stern. All motorboats are required by regulation to have a sternlight installed.

What color is a sternlight?

It will always be a white light and also is set-up come shine at 135 levels from the rear of her boat.

Masthead light

This is an additional white light, however this time is set-up to be visible from the front position and also from both sides of the boat. Again, it’s forced by law on all motorboats who space engine-powered between sunset and sunrise.

If you view a vessel in the distance that doesn’t have a masthead light, climate it’s likely going to be a sailboat. 

All-round white light

If her vessel is engine-powered and also less than 39.4 feet in length, climate you have the right to have one all-round white light in ar combining a sternlight and also masthead light into a solitary unit.

As with other navigational lights questioned in this guide, it should be visible from any kind of given allude on the water.

Once you have stopped and anchored down, you deserve to switch off her green and red sidelights and also just have this white irradiate on to save you visible.

Tips for boating in ~ night

Now that you recognize which next of a boat has a eco-friendly light at night, the time because that a few practical advice on how boat safely at night, using your navigation lights.

If you check out a white irradiate in her path, it method that you have the right to overtake it. The boat with simply the white irradiate on is referred to as the stand-on vessel, so you deserve to go past on either port or starboard side.If you see a red or eco-friendly navigation light in her path, that your role to it is in the stand-on vessel, meaning you permit the other boat pass safely. It is in alert simply in case the other captain hasn’t seen you or doesn’t know the naval navigational rules.If you view a white and red irradiate in her path, then it’s your turn to give way to the other boat. Girlfriend are forced to slow-moving down, keeping speed consistent and steady until the other vessel has actually passed you. Alternatively, you are allowed to adjust direction come the right, and also then pass the various other boat.If you see simply a red light, or just a eco-friendly light, then it’s more than likely a sailing boat in your path at night. You space the one to give way.If you view a eco-friendly light only in her path, climate it might be a flashlight from someone in a canoe or kayak sized vessel. Boats without motors and engines under 23 feet in size are forced by legislation to have a white light checked out from all angles so other vessels are mindful of the existence.

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The last word…

I hope the this has helped you come understand better the rules regarding night-time navigation lights top top boats, in specific which next of a watercraft uses a environment-friendly light for navigation.

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If you space taking a boat exam, quizlet, or boating check then i wish you every the happy in the world. Yet please don’t cheat, make certain you research study all the answers and also learn the navigational rules turn off by heart together they can one day conserve your life.