Not all , if any are USCG approved . Approval = x lumens at y feet or yards . LEDS tend to be not as bright and more directional . I have replaced all interior lights with LEDS , but hanging back on the running lights . I have a photometric light meter , left over from a previous life, that can take spot readings from sources and surfaces far away . I may do a test in the future . Also get a red bulb and a green bulb , they will not be filtered by the lenses and will appear brighter .