Attwood Bi-Color Boat Navigation Light This Attwood Bi-Color Boat Navigation Light is composed of anodized aluminum that raises the light head for visibility above the trolling motor, anchor, or other equipment on the bow. The 14 straight 2-pin locking collar pole offers a universal fit so it can be used with a wide variety of Attwood 2-pin and 3-pin straight or angled bases. This boat navigation light is designed for boats up to 38.4 ft. 12 meters with its 1-mile 225 redgreen light visibility.