USCG Certified for replacement use only, not for new installations on sail or power driven vessels under 12 meters (39.4 ft.) in length. Chrome plated brass top with Black plastic base. Clear lens. Horizontal mount. 225º Viewing angle. 12V bulb included. Screw size is 4.,USCG Certified For use on sail or power driven vessels under 20 meters (65.6 ft.) in length. 3-mile visibility. Chrome plated zinc alloy with black plastic base. Clear lens. 12V bulb included. Vertical mount. Screw size is 4.
