I recently picked up this cheap (AU$3.00) LED light to use on the top of my mast
when night-sailing/fishing on the A.I.
It's not water-proof, but being about 5m above the water should help keep it dry!
It takes 4 x AA batteries and has 24 x 3mm(?) super-bright LEDs around the outside
and 4 x 5mm super-bright LEDS inside. It has 3 different modes - all 24 outer LEDs on,
the 4 inner LEDS on, or all 28 LEDs on at once.
It has a central 40mm holes, with two spring-loaded clamps, which fit perfectly to the
top-section of the A.I. mast. Obviously, switching it on/off while the mast is in-place
would be problematic, but I'll be using it as a source of illumination while on the water
so it'll be staying on until I'm back on the beach.
The clamps are probably strong enough to secure the light to the mast on their own,
but I'm going to add a plastic-strip and a couple of velcro spots to make sure it stays
I gave it a quick test, in the dark, and was surprised at how bright it was - the A.I.
was lit-up like a christmas tree! Now I just need to find the time to give it a run on