Aqua Signal Series 20 navigation lights are designed for powerboats, which don't heel as much as sailboats.
They feature relatively flat beam, low glare lenses with energy efficient 5 watt bulbs.
Minimum visibility is 1 nm side and bi-color lights, and 2 nm for stern and masthead lights.
• Non-corroding fiberglass reinforced polycarbonate housing
• Polycarbonate Fresnel lens
• Bulb: 12V/5W BA 9 bayonet, included
• Prewired with 6" leads
• Self-adhesive gasket can be used as drilling template
• Mounts using special expansion dowel
• At a waterproofness of IP45, can withstand vigorous splashing
• USCG certified