Navigation Lights

Boat Navigation Lights

Navigation lights are an essential part of a boat’s equipment, helping other vessels understand your position, direction of travel and, in some circumstances, the type of vessel they are seeing. Whether you are replacing a damaged fitting, refitting an older boat or upgrading to LED, choosing suitable boat navigation lights means considering more than simply the colour of the lens.

The correct arrangement of marine navigation lights depends on factors such as the type and size of vessel, whether it is sailing or under power, and how the boat is being operated. Individual fittings also need to suit their intended position, electrical supply and installation method. This category includes navigation lights for sailing boats, motorboats, RIBs and other leisure craft, with options for common positions including port, starboard, stern and masthead installations.

Types of Boat Navigation Lights

Different navigation lights perform different functions, so it is useful to understand what each fitting is designed to show before choosing a replacement or planning a new installation.

Port Navigation Lights

A port navigation light displays red and is fitted on the port, or left-hand, side of the vessel when looking forward towards the bow. When replacing an existing sidelight, check whether your installation requires an individual port fitting or a combined unit containing both port and starboard sectors.

Browse our port navigation lights for dedicated red sidelights suitable for a range of marine installations. Pay attention to the mounting orientation and design of the fitting, particularly where an existing light is recessed, surface-mounted or installed against the cabin or hull structure.

Starboard Navigation Lights

The corresponding starboard navigation light displays green and is positioned on the starboard, or right-hand, side when facing towards the bow. Port and starboard lights work together to help indicate the vessel’s orientation to other water users.

If you are replacing one side of an existing pair, our range of starboard navigation lights includes dedicated green fittings. Where possible, check the specification and installation of the opposite light as well, especially on an older boat where fittings may have been replaced at different times.

Stern Navigation Lights

A stern navigation light is a white light intended for installation towards the stern of the boat. Its position and light sector are different from those of a masthead or all-round light, so fittings should be selected for their intended navigation-light function rather than simply because they use a white lens.

Our stern navigation lights provide options for replacing or installing dedicated white stern fittings. Before ordering, consider the available mounting surface, cable route and whether the light will remain unobstructed by equipment around the transom or aft deck.

Masthead Navigation Lights

A masthead navigation light is another white navigation light, but it serves a different purpose from a stern light. Despite the name, the appropriate mounting arrangement depends on the vessel and installation, so it is important to choose a fitting designed specifically for masthead use rather than treating different types of white marine lights as interchangeable.

See our range of masthead navigation lights when replacing an existing fitting or planning a suitable installation on a motor vessel. As with any navigation light, check the product details carefully for mounting requirements and electrical compatibility.

All-Round Navigation Lights

An all-round navigation light is designed to be visible around the full horizon rather than through only a particular sector. All-round lights can form part of different navigation-light arrangements depending on the vessel and circumstances, which is why they should not automatically be treated as a substitute for any other white navigation light.

Our all-round navigation lights include fittings intended for applications where 360-degree visibility is required. When installing one, consider not only the mounting point but also potential obstructions from canopies, masts, radar equipment and other structures aboard the boat.

Bicolour Navigation Lights

A bicolour navigation light combines the red port and green starboard sectors within a single fitting. This can provide a practical installation where separate sidelights are unnecessary or where the boat’s design is better suited to one combined bow-mounted unit.

Explore our bicolour navigation lights if you are looking for a combined port and starboard solution. When replacing an existing bicolour light, check the mounting orientation carefully because the red and green sectors must face the correct sides of the vessel.

LED Navigation Lights for Boats

LED navigation lights are a popular choice for both new installations and upgrades to older boat lighting systems. Compared with traditional incandescent bulbs, LEDs can offer lower electrical consumption, long service life and reduced routine bulb replacement. These characteristics can be particularly useful aboard boats, where minimising power consumption and maintenance is often desirable.

LED technology can also make it possible to produce compact, sealed navigation-light fittings with no conventional replaceable bulb. The suitability of any particular light still depends on its complete design and specification, however. A navigation light should be selected for its intended marine application rather than simply because it uses LEDs.

If you are upgrading an older installation, check the boat’s electrical voltage and the stated input requirements of the new fitting. Do not assume that an LED unit will be a direct physical replacement simply because it performs the same navigation-light function. Mounting-hole positions, dimensions, cable entry points and wiring arrangements can all differ between products.

How to Choose Navigation Lights for Your Boat

Choosing suitable navigation lights for boats starts with identifying the function that each light needs to perform. A replacement port light, for example, should be chosen as a port navigation fitting rather than selecting a general-purpose red marine light. The same principle applies to stern, masthead and all-round lighting.

Useful points to consider before buying include:

• Vessel type: Sailing boats, motorboats, RIBs and other craft can require different arrangements depending on how they are being used.
• Vessel size: Navigation-light requirements and suitable product specifications can vary with the dimensions of the vessel.
• Light position: Establish whether you need a port, starboard, stern, masthead, all-round or combined bicolour fitting.
• Visibility and intended use: Choose a proper marine navigation light designed to perform the required function, and check the manufacturer’s stated specification.
• Electrical voltage: Confirm that the light is compatible with the boat’s electrical system before installation.
• Mounting arrangement: Check whether the fitting is intended for horizontal, vertical, surface or other specific mounting arrangements.
• Existing dimensions: When replacing a light, compare the new unit with the footprint, fixing centres and available installation space of the original fitting.
• Marine durability: Navigation lights are exposed to moisture, salt, UV and vibration, so fittings should be designed for use in the marine environment.

It is also worth thinking about practical access. A light may eventually need inspection, cleaning or replacement, and wiring connections should be installed appropriately for the marine environment. On exposed parts of a boat, the physical position of the fitting can be just as important as its appearance.

Replacing Existing Marine Navigation Lights

Ageing boat lights can suffer from faded or damaged lenses, corrosion, unreliable electrical connections or physical damage. If a navigation light is no longer in good condition, replacing the complete fitting may be preferable to repeatedly addressing problems with an old unit.

Before removing the existing light, note its position and orientation and check how the wiring enters the fitting. Measuring the overall footprint and fixing centres can also help identify whether a replacement will cover existing holes or whether the mounting surface will need attention.

If changing from a conventional bulb fitting to LED, confirm the supply voltage and follow the wiring information supplied with the new light. Some older lamp holders allow a bulb to be changed independently, whereas many modern LED marine lights use an integrated light source. That can reduce routine bulb maintenance, but it also means the complete fitting should be assessed when choosing a replacement.

Where you are replacing multiple navigation lights during a refit, it is often sensible to review the system as a whole. Checking port and starboard fittings together, for example, can help maintain a consistent installation rather than replacing individual lights without considering the rest of the boat.

Navigation Light Positioning and Regulations

Navigation-light arrangements are not identical for every vessel. The lights required can depend on factors including vessel type, length and operating circumstances, while the correct position and visibility of each light also matter. A fitting being described as a navigation light does not by itself mean it is suitable for every boat or every mounting position.

For a more detailed introduction to what the different lights mean and how common arrangements are used, read our boat navigation lights guide. It provides useful background when deciding which type of fitting you are looking for.

When determining the regulatory requirements for a particular vessel, refer to the applicable rules and the instructions or certification supplied with the navigation-light equipment. If you are uncertain about an installation, seek appropriate professional guidance rather than relying solely on the appearance or position of an existing light, particularly on a second-hand or extensively modified boat.

Frequently Asked Questions About Navigation Lights

What navigation lights do I need on my boat?

The navigation lights required depend on factors including the type and size of your vessel and how it is being operated. Common arrangements can include red and green sidelights together with stern, masthead or all-round white lights. Check the requirements applicable to your particular vessel before choosing an installation.

What is the difference between port and starboard navigation lights?

A port navigation light is red and is fitted on the vessel’s port, or left, side when facing forward. A starboard navigation light is green and is fitted on the right-hand side. Together, these sidelights help other vessels interpret the direction in which your boat is oriented.

What colour is a stern navigation light?

A stern navigation light is white. It is designed specifically for the stern-light function and should not be confused with other white boat navigation lights such as masthead or all-round lights, which have different intended applications.

What is an all-round navigation light?

An all-round navigation light is designed to display light around the full horizon. Depending on the vessel and circumstances, an all-round light may form part of a particular navigation-light arrangement. Always check that the fitting and installation are appropriate for its intended purpose.

Are LED navigation lights better?

LED navigation lights can offer useful advantages such as low power consumption, long service life and reduced bulb maintenance. Whether an LED fitting is right for your boat also depends on its intended function, electrical compatibility, mounting arrangement and suitability for the marine environment.

Can I replace my existing navigation lights with LED lights?

In many cases an older navigation-light fitting can be replaced with an LED alternative, but check more than the light colour. Confirm the new unit’s function, voltage requirements, dimensions, mounting orientation, fixing arrangement and wiring before installation. A similarly shaped LED light is not necessarily a direct replacement for every older fitting.

Where should navigation lights be positioned on a boat?

Positioning depends on the type of navigation light and the vessel on which it is installed. Port and starboard sidelights, stern lights, masthead lights and all-round lights each perform different functions and need to be positioned accordingly. Refer to the applicable navigation-light requirements and the fitting manufacturer’s installation instructions when planning or changing an installation.

Why Shop With Pirates Cave Chandlery?

We're dedicated marine specialists with over 30 years of experience. We pride ourselves on our fast delivery and excellent customer service, which is why we're rated 'Excellent' on Reviews.io.

Our hand-chosen range of boat navigation lights are sourced from leading brands including Aqua Signal, Navisafe and Lalizas, giving you that added quality assurance. From bicolour navigation lights, to tricolour navigation lights - we understand that with so much choice, selecting the right navigation light may be tricky. Fear not, we're here to help. Give us a call on 01634 295 233, email us or visit our Rochester store - it's one of the largest bricks and mortar chandleries in the UK!

All of our orders are shipped via our quick and secure, fully tracked service - with most orders shipped the same working day on a next working day service.