As per the subject, I'm after something like welders use to clean up the steel of ships hulls before doing the actual welding. I have an SDS drill with a non-rotating setting but that's really a bit too big and heavy for what I want to do.
The application is actually pretty close to the "welders on ships' hulls" one, I want to clean up patches of rust etc. on the superstructure and decks of our small, steel, boat. I have a small angle grinder and (as I said) an SDS drill but it really needs something a bit more compact and handy than either of these.
Any ideas or recommendations?