On Fri, 23 Mar 2007 19:22:33 +1100, Peter Hendra
wrote:

I know that this possibly has a simple answer that everyone but me
knows, but is there any way I can prevent the unslightly brown "rust"
marks on my white hull paint from a welded fabricated stainless steel
fitting that is bolted on with stainless bolts?

My first reaction would be to prime and paint the stainless but that
might have its own issues.