I've used Oxyclean and Iron Out so far. The Iron Out did get rid of most of the rust stains. But there is still some sort of stain on the steps.
I don't know what type of material this is. It is pretty hard and it's from a 1985 boat. I assume it's original but maybe not. Bleach?
Close up, same area...
I don't know what type of material this is. It is pretty hard and it's from a 1985 boat. I assume it's original but maybe not. Bleach?

Close up, same area...
