Anything special needed to be done to paint the rudder and stern thruster cowling?

[mlanger]

While I'm here, I may as well as if it's okay to paint the rudder and thruster cowling? (See photos.) I assume I just need to sand them a bit, degrease, and paint? Or am I missing a crucial step? I don't want to screw it up. It looks pretty simple.

 

[Jared Dunning]

The thruster cowling just needs a good sanding and cleaning. You can paint the rudder, but make sure the paint is compatible with bronze. Otherwise, it could cause issues and lead to faster corrosion.

 

[mlanger]

Okay, more related questions.

Is the rudder bronze?

I have the paint in the photo which I was told I can use to touch up the bottom paint. I believe it's anti-fouling. Can I use that on the thruster cowling? How about the trim tabs?

Can you recommend anything to remove the residue of mostly barnicles on the various parts under there? I just spent an hour scraping everything off but I can still feel it. (see photo) Should I sand it or is there some kind of solvent that'll soften that stuff up?

I'm trying so hard to do most of this maintenance myself to save money. I appreciate all of your help and advice.

Maria