225° Red/Green Bi-Color Deck Light – Osculati Safety for Your Bow

The Osculati 11.507.01 deck-mounted bi-color navigation light is a versatile and essential solution for providing port and starboard visibility on vessels up to 12 meters. By integrating both the red and green sectors into a single fixture, it simplifies your bow lighting setup — one compact unit covers a full 225° forward arc (112.5° to port + 112.5° to starboard). This not only reduces clutter and wiring on your bow, but also ensures a unified, highly reliable signal. During night voyages, the combined red/green beam makes it easy for other mariners to interpret your heading, greatly enhancing safety. Whether you operate a small motorboat, runabout, or sailing yacht, this dual-color light keeps your bow compliant with collision-avoidance regulations and clearly visible to others.

Built to endure the marine environment, the light features a robust white polycarbonate body and plexiglass lenses tinted appropriately for each color. These materials are chosen for their durability — resisting UV degradation from sunlight, corrosion from saltwater, and physical impacts. The unit is fully sealed and waterproof, protecting the internal bulb and contacts from moisture and vibration. Osculati’s bi-color deck light carries all relevant certifications: it’s tested to meet COLREG72 (IMCO) standards and is RINA-approved for vessels ≤12 m, meaning it has passed strict safety and performance criteria. The included 12 V, 8 W halogen “festoon” bulb provides bright illumination meeting the 1 NM visibility requirement for each color sector. If desired, you can easily upgrade to a compatible LED bulb for even lower power draw and longer service life, as the fixture is designed to accommodate an LED replacement.

Installation is straightforward thanks to the light’s low-profile, horizontal-mount design. Simply choose a flat spot at the bow — often the foredeck or atop a bow rail platform — where the light’s view will be unobstructed. Secure it using two screws (mounting holes fit ~4 mm diameter screws; stainless steel hardware is recommended for longevity). It’s wise to apply a marine-grade sealant under the base to ensure no water can seep through the mounting holes. Connect the light’s two wires into your boat’s 12 V electrical system, typically tying into the navigation light circuit controlled by your dash switch. Always include an appropriate fuse in line for safety. Once installed, the Osculati bi-color light will work seamlessly with your existing nav lights (like stern and masthead lights) to give your vessel a complete nighttime signature. You can cruise with confidence knowing your bow is marked by bright, regulation-compliant red and green sectors — helping prevent collisions and keeping you and your passengers safe on the water after dark.

• Typical Use Cases: Ideal for small to medium-sized boats such as bowriders, center consoles, fishing boats, and sailing yachts that require a combined bow light. It’s especially useful where deck space is limited or a clean look is desired, since one fixture does the job of two. Use this bi-color light for night cruising, coastal sailing, harbor entries, or any low-visibility conditions to clearly indicate your boat’s heading to others.
• Recommended Vessel Size: Suitable for vessels up to 12 meters (≈39 feet) in length. It fulfills the navigation light requirements for this size class, making it an excellent choice for boats in the under-12 m category. From compact sport boats to auxiliary-powered sailboats, if your craft is within this range, the light provides the necessary ≥1 NM side visibility mandated by maritime regulations.
• Installation Tips: Mount the light at the bow, on a horizontal surface where the red and green lenses have an unobstructed view of the horizon. Common positions include the cabin roof, foredeck, or a dedicated bow light bracket. Ensure the red lens faces port (left side) and green faces starboard (right side). Use marine-grade stainless steel screws to prevent rust, and seal any drilled holes with silicone or bedding compound to maintain watertightness. Wire the light into your boat’s navigation lighting circuit, and test it along with your other nav lights before your first night voyage. Periodically inspect the bulb and wiring (for example, at the start of each season) to ensure everything is in good working order. With proper installation and maintenance, this light will provide years of reliable service, keeping your bow safely illuminated.