Lopolight Series 301-011 - Double Stacked Masthead Light - 5NM - Vertical Mount - White - Black Housing

The Lopolight Series 301-011 Double Stacked Masthead Light is a compact, dual-element navigation light engineered for sailboats and power vessels requiring reliable all-around visibility. With a 5-nautical-mile (5NM) visibility range and vertical mount configuration, this white masthead light delivers the precision positioning and clean aesthetics that serious cruisers and racers depend on when operating in reduced visibility or at night. The black housing provides corrosion resistance in salt air while maintaining a professional appearance typical of Lopolight's marine-focused design philosophy.

The double stacked configuration allows independent control of upper and lower light elements, a critical feature for vessels that need to display different lighting patterns depending on vessel type, anchoring status, or operational mode. At 2.15 pounds and measuring 6 × 4 × 8 inches, this masthead light integrates into most standard mast-mounted applications without excessive weight penalty or wind-load impact. The 5NM range meets USCG requirements for many vessel classes and provides adequate visibility in moderate sea states and weather conditions typical of coastal and offshore cruising. Lopolight's focus on compact, purpose-built navigation solutions—refined since 2004—means this fixture prioritizes reliability and regulatory compliance over oversized bulk.

This masthead light is ideal for cruising sailboats, day-sailers upgrading their night operations capability, and power vessels that require independent all-around navigation lighting. Skippers who spend extended time on the water recognize that dual-element lights provide flexibility—you can display either or both elements depending on anchoring status, vessel mode, and regulatory requirements. The vertical mount orientation suits most standard mast extrusions and reduces the complications of retrofit installations on vessels with existing electrical infrastructure.

Lopolight positions itself as a purpose-built marine lighting specialist, avoiding the generic approach of deck-mounted spotlights and consumer-grade fixtures. The Series 301-011 reflects that positioning: it's built for vessels that spend significant time offshore, where consistent lighting performance and regulatory compliance matter more than lowest price. The black finish complements modern mast designs and integrates visually with contemporary boat hardware.