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LED Navigation Lights on Zanjero

The original navigation lights on my G20 were all Sea-Dog brand fixtures, similar to these, with GE-90 incandescent lamps. They drew about 600 mA each (1.8A total) which gave me a max run time of something under 10 hours with the small 18 AH gel cell battery that I carry aboard. I replaced them with LEDs, and now the current draw with all the nav lights on is 360 mA. As an added bonus, all the lights are now noticeably brighter than before.

The bi-color bow light is an Attwood 3540.

Attwood 3540 bi-color light. (That's a mayfly to the left.)

For the stern and mast lights, I kept the original Sea-Dog fixtures and installed GE90 Star LED replacement lamps. The GE90 Star is much taller than the original incandescent lamp, so I fabricated a doughnut-shaped spacer to provide the extra room. The stern light's spacer is made from layers of thin teak laminated together.
I had one of these fail after two years. I bought another to replace it, but if they continue to fail at that rate, I'll look for an alternative.

 Stern light modified for GE90 Star. (Yes, I know it's partially obscured by the rudder, but that's where Gloucester put it.)

The mast light's spacer is made from a piece of 3/8" polycarbonate leftover from my companionway hatchboards. Both spacers were rough-cut with a coping saw then filed and sanded to the appropriate shape.

Modified mast light. Some light spills through the lexan spacer, which creates an interesting effect.

Here's what they look like from about half a mile away at dusk.

Port bow and mast lights.

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