Attwood 1-Mile Deck Mount, Bi-Color Red/Green Combo Sidelight - 12V - Stainless Steel Housing

The Attwood 1-Mile Deck Mount Bi-Color Red/Green Combo Sidelight is a navigation light engineered for powerboats up to 39.4 feet, delivering 225-degree visibility across a full nautical mile. Constructed from corrosion-resistant 304 stainless steel, this 12V marine sidelight combines port and starboard signaling in a single compact fixture—eliminating the need for separate red and green light installations while meeting USCG visibility requirements for vessel size and operating conditions.

The fixture includes a rubber gasket lens seal that protects against water intrusion and internal corrosion in saltwater and freshwater environments alike. The included 7.5-watt lamp operates on 12VDC power systems standard to most marine electrical installations. At just 0.2 pounds with compact 5 x 3 x 5-inch dimensions, the light installs flush with deck or cabin surfaces using three #6 fasteners (hardware sold separately), minimizing wind resistance and visual obstruction on the helm. The stainless steel housing withstands constant spray, UV exposure, and temperature cycling that corrode lesser materials, making replacement intervals measured in years rather than seasons.

This sidelight addresses the practical concerns of weekend anglers and serious offshore operators alike. Weekend fishermen benefit from simplified wiring—a single run handles port and starboard signals rather than dual circuits. Offshore operators working high-traffic waters or night passages depend on the full 1-mile visibility range to meet navigation regulations and ensure recognition by other vessels. The bi-color configuration is especially valuable for smaller center consoles and coastal cruisers where space is at a premium and every circuit matters.

Marine navigation lights are Category A equipment subject to USCG and IALA standards. The Attwood 66318-7 is purpose-built to comply with visibility and mounting requirements for vessels in its size class. Upgrading from aging incandescent fixtures or corroded aluminum housings to stainless steel construction extends service life and eliminates corrosion-related voltage drop that dims lights over time.