Courtesy lighting, especially red, white or amber colors, mounted in such a way as to be confused with navigation lights can be dangerous. So, mount them low in the cockpit and in places where lighting is indirect for best results.
SeaSense Marine Products
These strip lights are powerful but draw only a fraction of an amp, so using them, even at anchor, won’t overdraw the battery banks.
Cool Feature: They are submersible as well, so they can be mounted on the hull for ambient lighting at anchor.
Hardware Included: Gasket and stainless-steel screws
Colors Available: Blue, green, red, yellow, white
This stainless-steel fixture features potted electronics and no bezel to replace. The ultrabright LED makes an ideal engine-room or companionway light.
Cool Feature: It’s made of solid construction and has no bezel to replace.
Hardware Included: None
Colors Available: White, red, green
Milliamp: One-1000th of an amp. Most LED navigation lights burn 80 to 100 milliamps, or about one-10th or less
than what an incandescent light burns.
Candela: An English standard measure of light intensity. We converted lux/lumens to candelas.
Two-mile lights: Most navigation lights are certified to give a certain intensity at two nautical miles to meet United States Coast Guard standards. Lights that emit 4.3 candelas at 16 feet meet this test.
Sidelights: These are the red or green lights placed on the hull or other structure in a way that they illuminate 112.5 degrees from dead ahead to just aft of the beam. They should not both be visible at once — even from a nearly dead-ahead orientation to the viewer.
Submersible lights: All lights mounted below the sheer line must be submersible to Coast Guard/ABYC specs.