Attwood 20-Inch Fold-Down Incandescent Masthead Light

The Attwood Fold-Down Incandescent Anchor and Masthead Light gives 3-mile 360-degree visibility on a 20-inch pole, for boats up to 65.6 feet.

Three nautical miles covers boats up to 20 meters, which is a specific regulatory limit rather than a general capability. A vessel longer than that needs a higher rating, and fitting this on a larger boat is a compliance failure that surfaces at inspection.

It is an incandescent lamp rather than LED, which means a replaceable bulb and a higher current draw. The bulb is the trade: it can be changed when it fails, where an LED fixture is replaced entire, but it draws considerably more from the bank across a night at anchor.

A one-piece lens stays sealed against water intrusion, and the base wiring runs concealed. The assembly uses Light Armor's updated base design, works in fresh or salt water without modification, and folds down to remove the air draft when stowed. Explore more navigation lights.

• 3NM covers boats up to 20 meters
• A longer vessel needs a higher rating
• Incandescent: a replaceable bulb, higher draw
• One-piece lens with concealed base wiring