Lopolight Series 301-011KL - Masthead Light - 5NM - Horizontal Mount - White - Silver Housing

The Lopolight Series 301-011KL masthead light is a 5-nautical-mile horizontal-mount navigation light built for vessels requiring reliable, compact all-weather visibility. Designed as a single white masthead light in silver housing, this fixture combines European engineering with the practical requirements of modern recreational and working boats. Lopolight has been the standard for marine navigation lighting since 2004, offering solutions across boat sizes from weekenders to serious offshore platforms.

The 5NM visibility range meets Coast Guard and International Maritime Organization (IMO) standards for vessels under 50 meters. The horizontal-mount configuration positions the light on the mast apex for optimal downward and lateral projection, critical for ensuring visibility at night to other traffic across all quadrants. The silver housing resists corrosion in salt-air environments, and the compact 4 x 4 x 8-inch footprint minimizes wind resistance and aesthetic impact on the mast. At just 2.5 pounds, installation requires minimal reinforcement on most mast structures, while the robust engineering handles thermal cycling and vibration common to boating conditions.

This masthead light suits weekend anglers running 25-40-foot center consoles, cruising sailboat owners, commercial fishing vessels, and patrol operators where compact, reliable navigation lighting is non-negotiable. The 301-011KL integrates into existing Lopolight series wiring harnesses, offering upgrade flexibility for boats transitioning from older or bulkier fixtures. Serious boaters appreciate that the 5NM specification provides regulatory compliance without oversizing—exactly what's needed for responsible night operation without unnecessary power draw on small electrical systems.