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Navigation Lights for Sailboats (And How To Read Them)

Navigation Lights for Sailboats (And How To Read Them) | Life of Sailing

Last Updated by

Capt Chris German

June 15, 2022

Navigation lights on a sailboat can be confusing. If you understand the reason behind why they are the way they are however, they can make a lot more sense.

At their heart, sailboats are really just a power boat and as such must adhere to all power boat rules such as navigation lights. Other times however, a sailboat is classified in a special category. They have a set of additional lights they CAN show as an option, but are not always required to do so.

That’s about as clear as mud if you ask me and I contend that that is where the confusion about lighting a sailboat begins.

Just because you can show a light to identify yourself in times of low visibility, does not mean you have to and then we add in a little sibling rivalry between power and sail and things get downright adversarial when it comes to navigation and the night.

Table of contents

The USCG says You’re a Power Boat Whether You Like It or Not

Much to the consternation of many a sailor who has earned a commercial license to drive their sailboat, when you received your credential from the USCG it says you are a master of steam and power across the top with no mention of wind as a source of propulsion.

It is not until you read the back pages of your little red book that feels like a passport and looks like a US Sailing credential, that you will see the term “sail auxiliary”. That is because most of the time the U.S. Coast Guard knows that you are primarily reliant on your mechanical power to propel your vessel.

It's a sad thing, but the days of commercially viable sail boats are done and all but the most select few even have sails let alone use them as their primary power source. All sail boats by law are powerboats, but not all powerboats are sailboats.

Navigation Lights for a Power Boat

As a power boat, you are required to show certain lights and have been required to do so before power was even invented. 

In the days of man powered vessels like the viking ships who relied on oars while in close quarters to power their vessels, they needed to show other boats, friend or foe, where they were by showing lanterns in the dark to identify themselves. As you know, it is a time honored rule among all the nations of the world both past and present, that you must avoid a collision at all costs while at sea and even the viking knew that you should not run into things.

By lighting the front and back of your boat, you could warn other boats of your presence as well as identify which way you were heading. As such there is a very specific rule in the Code of Federal Regulations Number 46 (CFR46 by common name) that spells out with detail how many, the color, the luminosity or brightness, the angle of visibility and the location of all of the lights required for navigation on every single boat, seaplane, submarine and other nondescript vessel conceived by man to date that they must show while underway in reduced visibility.

And there is no flexibility in the rules.

As such a power boat, and by extension all sailboats, MUST, without question show one green light on the starboard bow and one red light on the port bow and one all around white light or lights while operating in reduced visibility. These lights should shine at all 360 degrees of visibility with the bow lights shining at an angle of dead ahead to 22.5 degrees abaft the beam and the stern lights shining 225 degrees dead aft. A forward facing masthead light that is white in color shall shine forward to comply with the directive that all vessels must carry an all around white light. For more read here .

As you can see, there isn’t much wiggle room when it comes to lights that must be shown.

Sailboats get a little flexibility with lights

Sailboats however, are a little different when they are in fact sailboats, which is only when you are entirely reliant on the wind for power and in no way reliant on any mechanical or manual means of propulsion. And for good reason.

Back in the day when men were men and sailboats were wooden, fire was a major concern. Sails were coated with wax and other flammable substances and the wood on boats was saturated with oils and grease. Even the ropes were plant materials saturated with oils to keep them pliable and strong.

Add those highly flammable substances to a parching environment like the sea and you had what was essentially a giant floating tinderbox.

Then tell that giant floating tinderbox that they need to identify themselves to the world at large at night using oil lamps with flames because batteries and lights were not invented yet. It didn't take very long or very many ships burning to the water line for the Governments to say to the sailboats, you get to do things a little different.

As such, sailboats are given special dispensation when it comes to lights aloft. They don't have to show an all around white light in their rigging because no one wanted to set their rig on fire with oil lamps 60 feet up in their rig.

However, when a sailboat takes their sails down such as when they are powered or at anchor, they must resume the display of an all around white light or lights aloft. That became a real challenge with aluminum masts and the disappearance of rat lines on the shrouds because there was no easy way to climb the rig and check the bulbs up the mast on a regular basis. 

Red over Green Sailing Machine

I have no idea where the history of this particular light comes from, but if you ever take a deck exam with the USCG, you better remember this mnemonic. An all around red light over an all around green may be displayed on a vessel during times of reduced visibility to indicate that a vessel is operating under sail power alone. 

I won’t even speculate on how or why they came up with this particular light configuration, but if you want to use these lights as a sailing vessel, you can do so, but that means that you will need three all round lights at the top of your mast, an all around white, an all around red and an all around green, just in that order.

The red over green is to be displayed in addition to the running lights or the red and green bow lights with the 225 degree stern light. As always, when the motor comes on, so does the steaming light or the forward facing white light that is also usually about ¾ of the way up on your mast to complete the requirement of an all around white light that indicates a power vessel.

What is a “steaming light” and why are you mentioning it now?

Most sailboat electrical panels will have a switch that is labelled “steaming light” and it will only come on when your anchor light is off. This is probably the most confusing part of sailboat navigation lights so if you are confused about this, you're in good company as most people are. 

A “steaming” light is named thusly, going back to the days of steam powered sailboats where when they fired up their boilers and doused the sails, they became a power boat once again. There aren’t too many steam powered boats, let alone steam powered sailboats, but the name stuck and it is a vestige of a bygone era.

Either way, when you fire up your motor, you turn on your “steaming light” and that locks out the all around white light which is used for anchoring to minimize the number of switches on your panel and reduce the number of wires in your mast. The fewer wires, the less chance of something not working or becoming disconnected.

The steaming light and the anchor light both go up the mast, but you can’t use an all around white light while using the 225 degree stern light at the deck level because to other boaters you would look like you have two white lights from the stern and that would be confusing.

The anchor light is used exclusively for anchoring while the steaming light is used to indicate you are a power vessel while underway.

As to why I am mentioning it now in the article, is because this would have blown your mind if I started with this subject cause it can be really confusing stuff.

Aspect Recognition with Lights

Remember when I said earlier that lights can help you tell others which way you are heading as well as tell you which way other boats are heading? That is called the aspect of the vessel and the USCG tests you on this for your deck exam as well. 

Knowing that the bow lights go 22.5 degrees abaft the beam on both sides or 112.5 degrees on each side, and the stern light faces 225 degrees aft for a total of 360 degrees of visibility, you can tell a lot about where a boat is heading and who has the right of way.

One thing that's easy to remember is red means stop and if you see a vessel's red light, it means stop as you are the give way vessel and approaching the other vessel from his port side. Conversely it works with green as well as that means you are approaching from the other vessel's starboard side and you are the standon vessel.

If you see a red and green light equally low on the horizon, that means your heading dead on into another vessel's path and conversely if all you see is a white light low on the horizon, it means you are overtaking another vessel power or sail, we don’t care because it is an overtaking situation. However, any time you do see a white light aloft in addition to the red and green bow lights, you know you are encountering a power boat.

Then there are angular approaches as well, where you see white and red or white and green light low on the horizon. You know in that case you are seeing a portion of the bow lights and stern lights from the side approaches of a vessel. Based on which direction those lights are heading, you can deduce which way that boat is going in relation to your boat.

So put it all together and you see a green light and a white light low on the horizon with a red over green light aloft, you know that you are approaching a sailboat that is traveling to your port and that might make you the standon vessel. That is of course, if we didn’t concern ourselves with windward and leeward and port tacks and starboard tacks, but that is a discussion for another article. So stay tuned when we talk about sailing rules and the right of way. But for now, do good, have fun and sail far.

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Capt Chris German is a life long sailor and licensed captain who has taught thousands to sail over the last 20 years. In 2007, he founded a US Sailing-based community sailing school in Bridgeport, CT for inner city youth and families. When Hurricane Sandy forced him to abandon those efforts, he moved to North Carolina where he set out to share this love for broadcasting and sailing with a growing web-based television audience through The Charted Life Television Network.

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Navigation Lights for Sailboats (And How To Read Them)

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Boat Navigation Lights Rules: Illustrated Beginners Guide

When navigating at night, the lights on other boats are your first clue about the moving dangers around you. And your navigation lights are your first line of safety in avoiding collisions in the dark, and they tell others vessels what you are and what you are doing. The rules sound complex, but with a little understanding you can get the basics for any situation.

So what are the basic navigation light rules? For most small vessels, motoring requires red and green (port and starboard) lights, and a white light visible in all directions around the boat. This is almost always a stern light and a masthead light on sailboats. Boats under sail require port and starboard lights, and a white stern light. Sailboats below sixty-five feet may show a tricolor light at the masthead instead of side and stern lights when sailing.

That's it, in a nutshell. There's a little more to it, as the rules change with different sizes and there are some specifics about angles of display for the colors. Identifying other ships at sea requires more study, but the basics are the same. And it's not much trouble to make sure you've always got the proper lights on your vessel.

Infographic for Marine Navigation Lights Rules based on sailboat size

On this page:

What are the official colregs rules for your sailboat, what about the uscg (united states coast guard) rules, lighting at anchor, identifying the boats around you.

The International Regulations for the Prevention of Collision at Sea , abbreviated "COLREGS" is very specific about the lights required, their shapes and sizes, and the distance they must be visible. For the smaller boat, the following definitions apply.

  • Masthead Light - a white light placed centerline on the boat showing an arc of 225 degrees with 112.5 degrees either side of the front of the vessel.
  • Sidelights - A red light on the port side and a green light on the starboard. They must show an arc of 112.5 degrees from centerline of the bow.
  • Stern light - A white light on the stern of the boat showing an unbroken arc of 135 degrees from centerline of the vessel.
  • All-round light - A light showing in an unbroken arc of 360 degrees.

The good news is you need not measure these angles. Any properly installed USCG or COLREGS approved light which will cover the correct arcs. If you have to replace the original light from your boat, make sure it's with an approved replacement.

Lights When Sailing

sailboat bow lights

The specific rules for a sailboat under sail are in COLREGS Rule 25 and vary slightly with the size of the boat. A sailboat powering is considered a power boat and falls under in Rule 23.

  • Under 23 feet (7 meters) - side lights and a stern light, possible. If these lights can not be displayed a light must be kept at hand to help avoid a collision. This can be a bright flashlight.
  • Over 23 feet - Side lights visible to one nautical mile and stern light visible for two.
  • Vessels under 65 feet may combine both sidelights into a single lantern on the bow.
  • May show a tricolor light on the masthead instead of sidelights and a stern light. It's one or the other though, do not show these lights at the same time .
  • Masthead light must be visible for three nautical miles, all other lights must have a two nautical mile visibility.
  • Side lights must be separated.
  • May not show a masthead tricolor light.
  • Masthead light must have five nautical mile visibility, all other lights must be visible for two nautical miles.
  • Optional masthead lights - any vessel under sail may display a red light over a green light at the masthead with sidelights and stern light. The red over green may NOT be displayed with a masthead tricolor light. It's one set or the other.

Lights When Motoring

sailboat bow lights

For all navigational purposes a sailboat under power is considered a power boat. This includes motor sailing - if the engine is on and providing propulsion you are on a power boat, even if the sails are up . This applies to navigation lighting, sound signals in fog and limited visibility, and rights of way.

Sailboats under 50 meters under power need to show:

  • A masthead light
  • Stern light

A power-driven vessel under 23 feet (7 meters) that does not exceed seven knots of speed may display an all around white light, though sidelights should be used if available.

sailboat bow lights

The USCG has published its own "Rules of the Road" that are based on the COLREGS. In addition, it has rules for the "Inland Waterways" for rivers, inland lakes and the Great Lakes.

The good news is this has no impact on what you have to do with your own boat.

They mostly relate to lighting changes on towed vessels like barges and tugs. For example, a vessel towing or pushing another vessel in the ocean under COLREGS shows two masthead lights, sidelights and a stern light, whereas in Inland Waterways the towing or pushing vessel displays two yellow towing lights instead of a white stern light.

If you sail on lakes, rivers or the Great Lakes where towed commercial traffic is common you should learn the inland lights, but coastal or ocean sailors will never see these.

When you anchor outside a designated mooring field, you should display an all around white light at the masthead or as high in the boat as practical.

sailboat bow lights

If your boat is large and has a very tall mast, you may wish to display another light closer to the waterline. Boats approaching in the dark may not see a light on a mast sixty or seventy feet in the air when they are close to your boat.

We use a simple garden path light on our stern when we anchor, left in a rod holder or flag socket. It comes on automatically at dusk and is a cheap and easy way to be more visible. There is no specific rule stating you can not display more lights than required, or the nature of any lights beyond the required all around light.

The COLREGS also specify that a round black "daymark" should be displayed in the rigging of any vessel at anchor. Very few small vessels observe this, however it is the correct display for a vessel in an anchorage.

If you tie to a mooring in a marked mooring area you are not required to display anchor lights, but there is no harm in doing so.

The other important reason to know your lights is to figure out what's going on around you at night. The water may be ablaze with white, red, green and other lights at night and they are your first key to avoiding collisions and problems.

All combinations of lights for fishing boats, commercial vessels, and so on are outside this post‘s scope. The odds are small you will encounter a submarine, seaplane or hovercraft at night, but there are regulations regarding specific lighting for each of those vessels!

There are a few fundamentals to help you figure out what that is you see on the horizon, which way it is going, and whether it is a danger to you.

Port Wine is Red

The fundamental rule is that red sidelights will ALWAYS be on the port side of a vessel, and green lights will always be on starboard. However, some vessels can use all around red and green lights for other purposes, though those will be higher than sidelights.

Diagram for identifying boats at night

The light‘s on a ship is not important, some large tankers and freighters will have their sidelights far aft and put them on the superstructure for better visibility. It is not safe to assume that sidelights you can see are on the bow of large vessels .

When you can see the color, you know which way the bow is pointing. If it's red, it's pointing more or less to the left and will travel in that direction. A green light shows it is heading more or less to your right.

If you can see the red and green lights at the same time, you are looking directly at the bow of the vessel. When you are far away, this isn‘t as alarming as if you are close crossing. Seeing red and green lights together on a vessel is something you never want to see for long.

Be aware of red and green lights used in combination with other red, green and white lights. These may not be running lights and could have other significance.

Tankers, Freighters and Large Ships

Tankers, freighters and large ships will have side lights, a stern light and a masthead light. In addition, on vessels over 50 meters there will be a second masthead light further aft and higher than the forward light. The masthead light positions are a better tipoff to the bow direction and how far from the bow the sidelights might be. Remember - on a large vessel the sidelights may not be at the bow or even close to it.

USCG Inland Rules allow for a second all-around white light on large vessels on the Great Lakes instead of a second masthead light.

Fishing Boats

Fishing boats engaged in fishing will have more complex light displays. When they aren't fishing, they will show lights like any power vessel, but Rule 26 spells out light combinations that vary by the fishing activity being done. In general:

  • Boats which are Trawling but not making headway will display a green all-around light over a white all-around light , and a masthead light aft of these lights. Boats making headway while trawling will show these lights, plus sidelights and a stern light.
  • A vessel fishing other than trawling will show a red all-around light over a white all-around light . When making way they will also show sidelights and a stern light.
  • If a vessel has gear more than 150 meters away from the boat, it will show a second all around light in the direction of the gear. The best rule is to give fishing boats as wide a berth as you can at night. They're easy to pick out if you check the top light configurations but their course may be difficult to predict.

Towing and Pushing

Towed vessels can be the most dangerous to cross, but they have the most lights to tell you what is happening. Refer to COLREGS or the USCG Rules of the Road Rule 24 for all combinations You can pick a tow/push vessel out with the following lights:

  • Two or three masthead lights in a vertical line. Three masthead lights shows a tow over 200 meters. Additional masthead lights may show for larger tow vessels.
  • A towing light (yellow light with the same characteristics as a stern light) directly above the stern light.
  • The will also have side lights and a stern light.
  • The towed vessel will show sidelights and a stern light. Lighting may vary under USCG inland rules, where towing lights may replace stern lights. Learn these differences if this is your regular cruising ground. If you think there is a tow ahead of you, always go well behind the aft most set of lights. Never go between a tow and avoid crossing ahead if possible as it may restrict their maneuverability.

Special Situations

There are several rare situations you may encounter. As a general rule, if there are a lot of lights and you don't understand them look for the sidelights on a moving vessel. If you can find them and figure out the direction it is moving, it makes the vessel easier to avoid. Stay well clear of lights you do not understand if you can avoid them without risk.

Most of these signals are used by larger, commercial vessels and you will not need them.

They use these light combinations with other light combinations. For example a towing vessel may also be restricted in maneuverability, and a vessel constrained by draft will show running lights if moving.

  • Not Under Command - two all around red lights in a single line
  • Restricted in Ability to Maneuver - red, white then red in a single line
  • Constrained by draft - three all around red lights

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Boat Navigation Lights: Understanding the Basics

sailboat bow lights

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For many boaters, the best way to end a beautiful day on the water is to watch the sun slowly drop below the horizon while it lights up the clouds and sky above. Others feel better heading to the dock before the sun goes down, while there is still plenty of light to illuminate the channel markers and other potential dangers.

Besides understanding boat navigation light rules, it is also important to understand:

  • The overall purpose of boat navigation lights
  • How to properly use boat navigation lights
  • What the different colors (red and green) mean

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Red Boat Navigation Light.

How do boat navigation lights work?

Boat navigation lights, or “nav lights,” are the colored marker lights visible on either side of the vessel and at the stern . These lights play essential roles in identifying the ship’s length, direction, and purpose!

The colored marker lights and where to find them go as follows:

  • The boat’s port side is marked with a red light.
  • The starboard side light is green.
  • When looking at the boat’s transom or stern, a white light may be visible.

Keep in mind large boats and ships may use other colors, like yellow.

Next time you’re boating at night , say thanks to your navigation lights. They allow you to see other boaters in the dark and help prevent collisions. But there is much more to boat navigation lights than that.

How to use boat navigation lights

Each of the boat’s navigation lights is only visible for so many degrees of a circle to prevent confusion and accurately identify which side is in view.

By noting which colors are visible on another vessel, boaters can identify which direction the other boat is facing or headed. Knowing a boat’s direction can be especially important when crossing paths with another vessel in the dark.

If you walked around a boat at night while the navigation lights were on, the color visible would change depending on where you stood. When looking at the port side of the boat, the red light would be visible from dead ahead of the vessel to just past the center of the port side or through 112.5 degrees of a circle. Walk to the starboard side, and the green light would be visible from the bow to just past the boat’s center, or another 112.5 degrees.

Stand at the back of the boat, and you will see the white light visible for a total of 135 degrees from one side of the vessel to the other. Add up all three, and you’ll get 360 degrees.

Green & Red Boat Navigation Lights.

Boat navigation light color meanings

If you were on a boat at night and could see nothing but the different colored lights of another vessel ahead of you, you would still know exactly which way that boat was going.

  • If you could only see the red light ahead of you, you would know that you are seeing the other vessel’s port side, or it is crossing in front of you from your right to left.
  • The opposite is true if you saw the other vessel’s green light . You would be looking at the other vessel’s starboard side or watching the boat pass in front of you from left to right.
  • If you see both red and green lights , then the other vessel is coming straight at you if you can see both red and green lights.
  • If you can only see the white light and nothing else, you would look directly at the other boat’s stern as it drives away.
  • Red and white means the boat is driving away from you, crossing from right to left.
  • On the other hand, green and white signal that the vessel is moving away from you, crossing from left to right.

When renting a boat on Boatsetter , make it a habit of checking that navigation lights are working. You should turn on the navigation lights even if the sun is out. It’s the best and safest boating practice.

Want additional resources for boating?

Check out the links below for more information on boating.

  • Navigation lights study guide
  • Pre-departure boating checklist
  • Boat Spring Commissioning Dewinterization Checklist

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Chuck-Warren

Chuck Warren fell in love with boats at 9 years old while helping to restore his grandfather’s 1939 44-foot Elco cruiser. A lifelong boater, Chuck has experience operating large and small vessels on the waters of the Atlantic, Gulf of Mexico, Caribbean, and the Great Lakes.

During his 35-year marine industry career, Chuck has been the driver for several offshore powerboat racing teams, the chief engineer aboard a Caribbean research and salvage vessel, captain of a Florida Keys sunset cruise, and more.

Today, Chuck is a boating industry writer, copywriter, and captain who lives on his 40-foot boat in the summer when he isn’t delivering vessels around the Great Lakes or teaching new boaters to drive. Winters are split between the West Michigan lakeshore and wherever his travels take him.

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Understanding Boat Navigation Lights

Chris Riley

Boat navigation lights are essential when you’re out on the water. They’re essential, but it’s easy to misunderstand their uses and correct placements.

If you don’t know the correct placement for your stern lights or know what type of navigation light you need on your mast, don’t worry: we’re here to help. Below, we’ve got an overview of everything you need to know about boat navigation lights: what type of navigation lights you need, where to put them, and why you need to use them.

So without further ado, let’s learn more about boat navigation lights.

What navigation lights are required on a boat?

The U.S. Coast Guard Navigation Rules, International-Inland encompasses lighting requirements for every description of watercraft. The information provided there is intended for powerboats and sailing vessels less than 20 meters. The various options are illustrated.

The U.S. Inland Rules apply inside the demarcation lines at the entrances to inlets, bays, rivers, etc. The demarcation lines are shown on coastal charts as magenta dashed lines. Once outside of the demarcation lines, International Rules apply.

Powered Vessels

Power boats less than 20 meters shall exhibit navigation lights as shown in Figure 1. (Note: 2 masthead lights are optional for vessels under 50 meters. Vessels over 50 meters will display two masthead lights.)

Vessels of less than 12 meters in length, may show the lights in either Figure 1 or Figure 2.

Powerboats less than 7 meters whose maximum speed cannot exceed 7 knots may exhibit an all-round white light, and if practicable sidelights instead of the lights prescribed above, in international waters only.

Sailing Vessels and Vessels Under Oars

Sailing vessels less than 20 meters may exhibit the navigation lights shown in Figures 3 or 4.

Another option for sailboats is to use a single combination lamp at the top of the mast as shown in Figure 5.

Sailing vessels less than 7 meters may carry an electric torch or lit lantern showing a white light to be displayed in time to prevent collision (see Figure 6 – left picture).

If possible, the lights prescribed for sailing vessels less than 20 meters should be displayed.

Vessels under oars may display the lights prescribed for sailing vessels, but if not, must have ready at hand an electric torch or lighted lantern showing a white light to be displayed in time to prevent collision (see Figure 6 – right picture).

Small boats can benefit from using a temporary LED light with a suction cup attachment if permanent fixings aren’t possible.

Shapes and Lights

To alert other vessels of conditions that may be hazardous, there are requirements to display lights at night and shapes during the day.

Anchored Vessels

Powered vessels and sailing vessels at anchor must display anchor lights. An anchor light for a boat less than 50 meters in length is an all-around white light visible for 2 miles exhibited where it can best be seen (see Figure 7).

Vessels at anchor shall exhibit forward where best seen, a ball shape (see Figure 8).

Vessels less than 7 meters are not required to display anchor lights or day shapes unless anchored in or near a narrow channel, fairway or anchorage, or where other vessels normally navigate.

Anchor lights are not required on vessels less than 20 meters, anchored in special anchorages in inland waters designated by the Secretary of Transportation.

Sailing Vessels Under Power

Vessels under sail also being propelled by machinery, must exhibit forward where best seen, a conical shape with the apex pointing down (see Figure 9).

Vessels less than 12 meters are not required to exhibit the dayshape in inland waters.

Sailing vessels operating under machinery, or under sail and machinery are considered as powered boats and must display the lights prescribed for a power-driven vessel.

Restricted Maneuverability

The Navigation Rules require vessels restricted in their ability to maneuver to display appropriate day shapes or lights. To meet this requirement, recreational vessels engaged in diving activities may exhibit a rigid replica of the international code flag “A” not less than one meter in height or at night display the navigation lights shown in Figure 10.

This requirement does not affect the use of a red and white divers flag which may be required by state or local law to mark a diver’s location. The “A” flag is a navigation signal indicating the vessel’s restricted maneuverability and does not pertain to the diver.

Navigation lights should be checked prior to departing the dock and you should always carry spare bulbs. The USCG doesn’t care if they were working when you left, only that they are working when required.

Where do navigation lights go on a boat?

The current navigation light requirements are found in the Navigation Rules, International-Inland, and in Parts 81, 84, and 89 of Title 33, Code of Federal Regulations . They’re easy to find, but many sailors and boat manufacturers do not have a good understanding of the rules governing the proper installation of navigation lights. To help clear up any misunderstandings here’s all you need to know:

Sidelights that are installed in the contour of the bow without providing a mounting surface tooled to be parallel with the fore and aft centreline of the boat are not in compliance with the Inland or International Navigation Rules. Depending on the breadth of the boat near the bow and how far aft from the vessel’s stem the lights are mounted, this shift can be more than 20 degrees in some cases. Installing the fixtures too far aft of the vessel’s stem may result in the sidelights not being visible from a position dead ahead.

Another factor in the proper installation of sidelights is that they must maintain their required minimum intensity in a vertical sector from 5 degrees above to 5 degrees below the horizontal. They must also maintain at least 60 percent of their minimum required intensity from 7.5 degrees above to 7.5 degrees below the horizontal. Installing flush-mounted sidelights, designed to be mounted to a vertical surface in the hull contour, without providing a mounting surface tooled to be vertical, shifts the vertical coverage sector. This also results in non-compliance with the Inland or International Navigation Rules.

Additionally, most of these flush-mounted sidelights are installed below the vessel’s rub rail. International Navigation Rules require that sidelights be installed above the uppermost continuous deck. Therefore, this configuration would not be in compliance with International Navigation Rules.

When separate red and green sidelight fixtures are used, the masthead light or all-round white light, whichever configuration is installed, must be located as close as practical to the vessel’s fore and aft centerline. For vessels less than 12 meters in length, the masthead light or round lights may be displaced from the fore and aft centerline providing that the sidelights are contained within a common fixture and mounted on the vessel’s fore and aft centerline. The masthead or round lights must be installed at least one meter (3.3 ft.) above the sidelights.

Which navigation lights are you required to display when anchoring your boat for the night?

Boating at night (or in reduced visibility) can present some special challenges. Not only is your depth perception lessened, but bright lights on the shore can also cast misleading reflections on the water and if you wear glasses, or worse yet bifocals, you simply don’t see as well at night as you do during the day.

It is not only important that you be able to identify other vessels operating in your proximity, it is equally important that other vessels see you. Most recreational vessels are less than 30 feet in length and, according to the Rules of the Road, shall be equipped with navigation lights.

These lights not only have a certain arc through which they can be seen but must be seen from a minimum distance. The following lighting requirements are for recreational vessels less than 12 meters in length. (approximately 39.4′)

The arc of the lights and color allows you to determine the direction a boat is moving. How good are your boat’s lights? You should test them to check your nighttime visibility, or you might land yourself in hot water with the Coast Guard.

Whether on a trailer or at the marina, switch on your lights and see how well they can be seen. Walk away from the boat or row away, if you are at anchor or at a mooring, and see how visible the lights are as you move further away. How easy are they to see against the background of lights onshore?

Does your stern light shine dead astern over the required 135º arc or does it shine to one side or up or down? Can it be seen from the required 2 miles and why is that important? As an example, let’s say that your stern lights can only be seen for 1/2 mile. You are underway at 8 knots and a large ship is approaching at 15 knots. The ship is only 4 minutes away from a collision with you. By the time the ship “might” see you, identify the light, and decide on how to move, it is too late. A ship traveling at 15 knots may take miles to stop.

Look at the stern lights again, as you move from the stern toward the bow, does the stern light “disappear” as the sidelight “appears”? The stern light should disappear and sidelight appear at 22.5º abaft the beam. If you don’t see the green starboard sidelight or the red port side light when the stern light disappears there is a problem with the arc of one or all these lights. This means that if another boat were approaching you at the angle where no lights are seen there is an increased risk of collision.

If both the stern lights and side lights are seen brightly at the same time you still have a problem. A boat approaching won’t know whether they are overtaking or crossing and whether they should give-way or stand-on.

You should also check to make sure that your masthead light disappears at the same time each side lights disappear and they both disappear when the stern light appears.

Check your sidelights from dead ahead. You should see both red and green. However, by moving toward one side just 1-3º you should then see only one light. If you still see two lights, an approaching boat won’t be able to tell which direction you’re are going.

It is very important to be seen from a distance but also for an approaching boat to be able to determine your direction of travel.

When boating at night remember the following: “When two lights you see ahead, turn your helm and show your red”.

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About Chris

Outdoors, I’m in my element, especially in the water. I know the importance of being geared up for anything. I do the deep digital dive, researching gear, boats and knowhow and love keeping my readership at the helm of their passions.

Categories : nauticalknowhow

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Robert Hogward on September 12, 2021

Thanks for writing this post. I can either place them on the exterior or interior for decorations. Placing them on the exterior side is helpful when I go fishing and indulging in other night activities in the water.

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Dalton Bourne on July 26, 2022

We love the lights! We put lights from Seaponer on my Jon boat right above the water line and use them for night fishing! The amount of brightness it offers is an assurance of my boat’s being seen clearly during the night. At the same time, the LED lights don’t consume too much energy, leading to a life span of up to 50,000 hours. 

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LED Navigation Light Adapter Plates

LED Navigation Light Adapter Plates

These are packaged as pairs. This will fit both Hardin & Livorsi navigation lights. These are adapter plates only, lights sold separately! Note:  This replaces 730-LEDNLAP.

Polished Stainless Steel Pop-up LED Bow Light

Polished Stainless Steel Pop-up LED Bow Light

Polished Stainless Steel LED Pop-up Bow Light

These LED Pop-up bow lights are made of stainless steel. Simply pull up for night use, and keep flush during the day. Green and Red lights.

  • Keeps deck free of protruding lights.
  • Marine grade 316 stainless steel.
  • Folds down flush when not in use.
  • Same Cutout as 680-204M for easy upgrading
  • USCG approved 2 nautical miles.
  • NMMA type accepted.
  • Meets 72 Colregs.
  • Flange measures 5.3" Long by 3.5" Wide.
  • Flange is longer and skinnier than 730-LEDPUBL.

INSTALLATION

Each light is supplied with a cut-outtemplate. Use the supplied template to make a cut-out where the light will go. Fasten with three #10 screws (not included).

680-211-MC Cup SOLD SEPARATELY

Plastic Undercover Cup For Stainless Pop-up Bow Lights

Plastic Undercover Cup For Stainless LED Pop-up Bow Lights

For use with 680-211-M, Pop-Up Bow Light.

Polished Stainless Steel LED Pop-up Bow Light

The LED Pop-Up Bow Light houses both port and starboard navigation lights in one convenient housing. Folds down flush when closed, opens with the push of a button. LED lights draw very littler power and stay cool to the touch, approved by USCG. 2 nautical mile range. Optional waterproof cup is available for water runoff.

  • Made of marine grade 316 stainless steel
  • Folds down flush when closed
  • USCG approved for 2 nautical miles
  • LED Red and Green lights stay cool to the touch
  • Optional waterproof cup for water run-off
  • Flange measures 4.43" Long by 4" Wide
  • Semi-Oval Shaped Flange is shorter and fatter than 211-M
  • Same part as 210-M

LED Pop-up Bow Light Cup

LED Pop-up Bow Light Cup

Polished Stainless Steel Pop-up Bow Light

Polished Stainless Steel Pop-up Bow Light

These Pop-up bow lights are made of stainless steel. Simply pull up for night use,and keep flush during the day. Green and Red lights.

  • Uses a #78 bulb.
  • USCG approved 1 nautical mile.
  • Overall width is 3-1/2" and length is 5-1/2".

Plastic Undercover Cup For Stainless Pop-up Bow Lights

Plastic Undercover Cup For Stainless Pop-up Bow Lights

For use with 680-204-M, Pop-Up Bow Light.

Billet Pop-Up Bow Light Bezel

Billet Pop-Up Bow Light Bezel

Billet Pop-Up Bow Light Bezel (Each)

This bezel is machined form 1/4" 6061-T6 billet aluminum. It is designed to fit the stainless steel pop-up bow lights #680-204-M and 680-211-M.  Available polished or in your choice of powder coated colors. Does not fit the LED Pop-Up Bow Light ( 730-LEDPUBL ) Fits: Pop-up LED bow light 680-211M  and Pop Light 680-204M

Side Mount Bow Lights

Side Mount Bow Lights

Side mount bow lights that are flush mounted in the hull of your boat. Sold in pairs. Measures 7-3/4" Long by 2-3/8" Tall. Light Fixture is 3" Deep

Suction Bow Light

Suction Bow Light

These running lights are tested to meet or exceed A-16 standards and meet lawful requirements for inland and international waters when properly placed on your boat.

  • Uses 4 AA batteries (not included)
  • It floats and is waterproof
  • Double o-ring seal
  • Shock resistant rubber housing
  • Rubber booted on/off switch

Attwood Pulsar Side Light Deck Mount Port - Red

Attwood Pulsar Side Light Deck Mount Port - Red

"For use on boats up to 39.4' (12 m) in length, provides 1-mile visibility. Twist/bayonet lock design secures lens and cover to base. Includes an 8-watt wedge base lamp and 7" wire leads for connection to 12 VDC power supply. Install directly to deck with (2) #10 fasteners. Cover and lens conceal installation fasteners and seal out water. Lights are visible 112.5°. Size: 2-3/8" dia. x 1-7/16" vertical height."

Type: Port, Lens: Red, Housing: Black, Case: 6

Attwood Pulsar Side Light Deck Mount Starboard - Green

Attwood Pulsar Side Light Deck Mount Starboard - Green

Type: Starboard, Lens: Green, Housing: Black, Case: 6

Attwood Pulsar Side Light, Raised Base, Green Lens

Attwood Pulsar Side Light, Raised Base, Green Lens

Pulsar Sidelight w/Raised Base, Green

  • Twist/bayonet design secures lens and cover to base
  • 7" wire leads connect to 12V power supply
  • 3" high. Black housing
  • Includes 9-watt wedge base lamp
  • Sold individually, not as pairs

Type: Starboard, Lens: Green

Attwood Pulsar Side Light, Raised Base, Red Lens

Attwood Pulsar Side Light, Raised Base, Red Lens

Pulsar Sidelight w/Raised Base, Red

Type: Port, Lens: Red

Combination Bow Light Chr Zinc

Combination Bow Light Chr Zinc

Combination Bow Light Chrome Zinc

  • Size: 2-7/8"L x 2-9/16"W x 1-1/2"H
  • Die cast chrome zinc
  • For replacement use only

Attwood C-Clamp Mount Portable Led Nav Light Kit With Telescoping Pole, Gray (Uses 3-Aaa Batteries Not Included)

BATTERY OPERATED LED PORTABLE NAV LIGHT KIT (ATTWOOD MARINE) - Attwood C-Clamp Mount Portable LED Nav Light Kit With Telescoping Pole, Gray (Uses 3-AAA Batteries Not Included)

Type: Telescoping Pole, Mount: C-Clamp, Color: Marine Gray

Be seen and be safe with these compact and portable LED navigation lights. All new portable navigation lights are more durable, easier to use, and include Attwood's strongest mounting and pole configurations. Ideal for personal water craft, camping, and hunting. Kit includes red/green LED bow light, white LED stern light, quick release mounts, pole, and hardware.

Attwood C-Clamp Mount Portable Led Nav Light Kit With Threaded Pole, Camo (Uses 3-Aaa Batteries Not Included)

BATTERY OPERATED LED PORTABLE NAV LIGHT KIT (ATTWOOD MARINE) - Attwood C-Clamp Mount Portable LED Nav Light Kit With Threaded Pole, Camo (Uses 3-AAA Batteries Not Included)

Type: Threaded Pole, Mount: C-Clamp, Color: Real Tree ® Max-4 Camo

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Attwood Frosted Globe All-Round Boat Navigation Light

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4-LED Courtesy Light - Surface Mount

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Stainless Steel Drain Plug Underwater LED Light

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Gen3 Marine Stainless Steel Drain Plug Underwater LED Light Upgrade the lighting on your boat with the Gen3 Marine LED Drain Plug Light. Easy to install, this underwater light replaces your current 1/2" garboard drain plug - no drilling necessary! Built...

Marine CREE LED 1,600 Lumen Flashlight with 18650 Lithium Battery and Charger

Wholesale Marine LED Aluminum Flashlight Kit

 Product Description: Marine CREE LED Aluminum High Output Flashlight Case material:Durable aircraft-grade aluminum Water resistant CREE LED Bulb 900 Lumens Max - Output Varies based on battery voltage Telescoping to focus light beam from...

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Portable Clamp-On Boat Bow and Stern Lights

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Perko All-Round Boat Navigation Light

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T&H Marine Led Recessed Puck 3''

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Perko Fold Down Masthead Horizontal Mount Base

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Wholesale Marine Super Bright LED Aluminum Flashlight

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Sea Dog Marine Chrome Led Dome Light 6''

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Boat Lights: Lighting for all Types of Boats

Boat lighting is an integral part of keeping your safe both onboard and on the water. Every vessel needs to be well equipped with various kinds of boat lights from cabin lighting, navigational lighting, spotlights, and flashlights. 

Having these will ensure the safety of everyone on board. Wholesale Marine has an extensive line of marine lighting for all your nighttime boating needs. Our boat light inventory includes a wide selection of LED, Xenon, Halogen, and Incandescent lights for various courtesy, navigational or underwater uses.

While Wholesale Marine carries an extensive line of LED lighting for boats and yacht lighting. We offer marine lighting fixtures from top brands like Attwood, Rigid Industries, Sea Dog, TACO Marine, and T & H Marine. These brands provide lighting and accessories for every situation. Our easy to use online parts finder makes finding the boat lights you need a breeze.

Our marine lights are manufactured and engineered to be corrosion resistant and made to the highest standards. Each light or light kit is easy to install. Many of our lights are LED with a proven LED electrical design and functionality. Wholesale Marine carries high quality LED marine lighting.

Marine Lighting for all Places

Perko Marine Side Navigation Lights

The safety of you and your passengers is no accident. Well-positioned boat courtesy lights can illuminate low ceilings or can be positioned to eliminate tripping hazards. Sea Dog's  Utility LED Courtesy Light is a great surface mount light for your galley or even your deck. Constructed from delrin material, these bright led boat lights are excellent as a counter or step light.

At some point, docking your vessel at night will be unavoidable. Boat dock lights and navigation lights are an easy to use solution to avoid damage and dock your craft. Illuminate blind spots with the Anderson Halogen Boat Docking Light Kit . These powerful 55W lights are housed in a tough black housing with hardened glass lens

When visibility on the water is low, ensure that you have the right marine navigation lights installed from Wholesale Marine. From yachts, to cruisers, small boats, PWC's or even kayaks we offer a variety of portable navigation lights. Side lights such as the  Perko Vertical Mount Side Light are equipped with a red and green marine navigation lights.

Boat spotlights help provide smoother navigation when taking your boat out at night, and every boat should have a spotlight and flashlight on board. For smaller vessels, the Jabsco 135 SL RC Searchlight is a mounted spot light comes with a remote control and 15’ of cable for easy installation.

Even if you are an avid boater, you may not be familiar with boat spreader lights. These are essentially courtesy lighting that originally had been mounted to the spreaders on a sailboat mast, hence the name. Need an economical solution? We suggest  Sea Dog’s Halogen Flood Light .

Underwater Boat lights are a great way to accessorize and add aesthetic appeal to your boat, help anglers when fishing, and also provide additional safety. The Attwood Light Armor Underwater 3-LED Light is easy to install and designed to perform in the harshest conditions.

Stern lights not only provide extra lighting for safety, but also can extend recreation time when out for a day of boating, for fishing, or for night runs. Stern light bases can be easily installed to update and upgrade existing watercraft as needed. For smaller craft, consider Attwood’s economical 3-Pin Round Straight Pole Base .

Our boating specialists are here to help you Monday through Friday from 8:30 AM until 4:30 PM EST at 877-388-2628. We are here to assist you with all your boat lighting needs. We also offer the Captain's Club Rewards program for points that can be used towards future purchases. Most orders have same-day shipping. Order today.

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Moscow, Idaho

2023 Light Up the Season registration and event details.

sailboat bow lights

November  8, 2023   (Moscow, Idaho)  — Join us downtown on Thursday, December 7 th  for this year’s Light Up the Season gathering, which will include the annual tree lighting, the announcement of the DeLIGHTful Downtown winner, and the Light Up the Season parade! The festivities will kick-off at 6pm on Main Street.

DeLIGHTful Downtown registration is open, now through Nov. 30, Downtown businesses are welcome to participate and enter their storefront into this holiday decoration contest. To qualify, a business must be located on or near Main St. There are three criteria’s each competing storefront will be judged on.  

  • Prominent use of lights
  • Seasonal/Holiday theme selected by business is apparent
  • The Business utilized a significant portion of their storefront to decorate for the judges and public.

Four finalists will be selected, on Dec. 1, by a judging panel for public vote. Public voting will be open, Dec. 4 through Dec. 6.

Light Up the Season parade float registration is also open, now through Dec. 1. It is not mandatory to enter into the float contest to be a part of the parade, but registrants interested in participating in the float contest can enter into the following categories:

  • Best General Entry
  • Best Use of Lights
  • Best Youth Entry
  • Best Business Entry

If you are a downtown business and would like to participate in our annual DeLIGHTful Downtown, or interested in registering a float for the parade, please click on the link below:

https://moscowarts.submittable.com/submit

Story Contact:  Laura Perrigo, Community Events Administrative Specialist Phone:  208-883-7000 ext. 7233 Email:  [email protected]

Mayor Bettge Earns $1,000 in Annual Mayors’ Walking Challenge

November 16th artwalk event, change location, find awesome listings near you.

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Check out Moscow’s NEW electric river trams (PHOTOS)

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Water transportation has become another sector for the eco-friendly improvements the Moscow government is implementing. And it means business. On July 15, 2021, on the dock of Moscow’s ‘Zaryadye’ park, mayor Sergey Sobyanin was shown the first model of the upcoming river cruise boat.

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The model of the electrical boat with panoramic windows measures 22 meters in length. The river tram - as Muscovites call them - has a passenger capacity of 42, including two disabled seats. The trams will also get cutting edge info panels, USB docking stations, Wi-Fi, spaces for scooters and bicycles, as well as chairs and desks for working on the go. The boats will be available all year round, according to ‘Mosgortrans’, the regional transport agency. 

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Passengers will be able to pay with their ‘Troika’ public transport card, credit cards or bank cards. 

The main clientele targeted are people living in Moscow’s river districts - the upcoming trams will shorten their travel time in comparison to buses and other transportation by five times, Mosgortrans stated. 

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As the river trams are being rolled out, Moscow docks will also see mini-stations, some of which will also be outfitted with charging docks for speed-charging the boats.  

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Moscow is set to announce the start of the tender for construction and supply in September 2021. The first trams are scheduled to launch in June 2022 on two routes - from Kievskaya Station, through Moscow City, into Fili; and from ZIL to Pechatniki. 

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“Two full-scale routes will be created in 2022-2023, serviced by 20 river trams and a number of river stations. We’ll continue to develop them further if they prove to be popular with the citizens,” the Moscow mayor said .

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Moscow International Festival Circle of Light

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  • Teatralnaya • 3 min walk
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RVZONE Boat Navigation Lights, Boat Red and Green Bow Lights... › Customer reviews

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RVZONE Boat Navigation Lights, Boat Red and Green Bow Lights Navigation Lights for Boats Led Deck Lights for Night Fishing, Yacht, Kayak, Bass Boat, Pontoon Boat

RVZONE Boat Navigation Lights, Boat Red and Green Bow Lights Navigation Lights for Boats Led Deck Lights for Night Fishing, Yacht, Kayak, Bass Boat, Pontoon Boat

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