bulbs
the bulb will depend on what light you have, or what was being installed the day your boat was built. there is a anchor LED light on the market, but it is in the area of $200+, there is no LED bulb to just replace the one in the anchor light. leds shine out the end of the bulb so that a 360 anchor would have rings of leds, or revuild your light lens with a reflector cone in the inside that would reflect down and out. will list a LED site later.