Bi-Color Bow Navigation Light, Stainless Steel (Red/Green) – Vertical Mount 112.5°×2

The Osculati 11.414.05 bi-color navigation light is an excellent solution for the bow of small to medium boats. It combines the two primary side lights – red (port side) and green (starboard side) – into a single housing. This configuration is very popular on powerboats, fishing vessels, and small yachts up to 12 m because it simplifies the light setup and requires only one installation point and one cable run. Instead of two separate lamps, you get one elegant fixture that fulfills both functions.

The lamp’s housing is made of high-quality stainless steel (AISI 316) with a mirror polish. This not only gives it a modern, professional appearance, but also serves practical purposes – the polish reflects ambient light, enhancing visibility, and protects the metal from corrosion. Stainless steel ensures the light will last for years even when exposed to salt spray, without rusting or failing. The steel body also acts as a robust shield for the electrical internals – it’s resistant to impacts (for instance, from accidental knocks or flying debris in high winds).

The design is intended for vertical surface mounting. That means the back of the lamp is flat and suited to attach to a vertical bulkhead. A common location for this light is the front of the boat – for example, on the cabin front near the bow or on a special bow rail/pulpit bracket. With vertical mounting, the light is oriented to shine horizontally forward, covering the necessary sectors: from dead ahead to 112.5° on the port side (red) and 112.5° to starboard (green). Together, the two colored sectors are visible from straight ahead to 22.5° abaft the beam on each side, which meets the international rules requirements.

Inside the housing is an electrical assembly with a 12V bulb(s). Some models use a single dual-colored bulb, others have separate small bulbs for each color segment. In the case of the Osculati Utility 85 series, it likely uses one common 10W halogen bulb with a bi-color lens or two 5W bulbs. The key point is that power consumption is low, and brightness is sufficient to be seen at least 1 nautical mile (which is the standard for side lights on boats <12m). If desired, you could replace the original bulb with an LED module – the housing can accommodate that, though one must consider that official certification covers the halogen configuration.

Usage & Recommendations:

• For bow installation on motorboats: The stainless bi-color light is ideal for small powerboats, fishing boats, RIBs, and runabouts that need navigation lights when running at night. Mounted at the bow, it clearly indicates your boat’s orientation – the red side shows your port, the green your starboard. This helps oncoming vessels judge your course and understand the right-of-way.
• Matches boat style and design: Thanks to its sleek and shiny look, this fixture fits nicely with modern yacht designs. Its compact size (about 8 x 6 x 3.8 cm) means you can install it discreetly without spoiling the aesthetics or aerodynamics of the hull. It can also be attached to a rail mount on some boats, aimed forward.
• Part of a complete light set: Note that for a full navigation light setup you will also need a stern (135° white) light, and for power-driven vessels, a masthead (225° white) light. This bi-color covers only the sidelights sectors. Five Marine offers matching stainless steel white stern (code 11.414.04) and white masthead 225° (code 11.414.03) lights from the same series, which pair perfectly in style and function. It’s recommended to combine them for a complete solution.
• Easy maintenance: Thanks to the stainless steel body, maintenance is minimal. Simply rinse with fresh water after saltwater use to remove salt crystals from the surface. If you need to change the bulb, removing the cover (usually secured with two screws) is straightforward and provides easy access to the socket. Replacement halogen bulbs and gaskets are readily available.
• Superior to plastic counterparts: Compared to plastic bi-color lights, the stainless version offers much longer life and resilience. There’s no risk of the housing fading or cracking from sun exposure. It’s also more resistant to mechanical impact from waves or hitting a dock. That’s why this model outperforms cheap alternatives and is aimed at owners who value reliability and appearance.

By choosing the stainless steel bi-color bow light 11.414.05, you’re giving your boat a standout advantage – it will not only meet all safety requirements, but do so with style and dependability. Five Marine strives to offer you a product that puts you a step ahead of the competition, and this light is exactly that – a blend of elegance, functionality, and proven performance on the water.