John, Yep, I got that. Other than for the redundancy though, wouldn't you agree, that to fit the rule (to the letter) for both motoring and sailing, you could completely do away with your masthead light. My jib is on a roller furler, so it's covering the nav lights is not an issue for me. Don't get me wrong here folks. If somebody doesn't mind keeping a lot of lights in working order, then the more the merrier :-) I however have been in the trucking business all my adult life and am so sick of fixing/maintining lights I could puke. So, I'm usually looking for the simplest solution I can find. Any electrical equipment in a wet, let alone a wet AND salty enviroment is going to be maintanence intensive.