[boatpoker]

You have two circuit breakers but no 30amp main ????
Is the polarity indicator wired across both circuits ?

 

[boatpoker]

I'm assuming the double pole main is above the reverse polarity light. There certainly has to be one.

I'd hope so but in my experience I wouldn't bet on it

 

[boatpoker]

Funny but scary.

The op's picture looks like a factory panel to me. He should have taken a pic of the entire panel.

About 80% of the boats I see have significant electrical issues caused by inexperienced hands. I'd guess about 15% are potentially lethal and I don't understand why more people don't die.

Just for fun I threw up a little photo album of the stuff I see on a daily basis. I think it will be easy to see why I am a little cynical on the topic.