After varnishing the battery box lid and epoxying the clew fitting I modified a camping lantern for use as an anchor light. Instead of having batteries in the lantern, I wired the internal connections to an electric lead that was fitted with a plug for a 12 volt cigar lighter socket. That means I can take power directly from the ship’s battery. Because the lead is fairly long I can put the light anywhere on the boat. I may even devise a system for hoisting it to the top of the mast for occasional use as an all round white navigation light. Alternatively I could permanently attach it to the masthead.