OK, I toned it down a bit. But I can guarantee that if it gets a good smack or scratch, that the spot will start a peeling process.
The reason SS was made in the first place was as a STAINLESS steel
, which means nothing will stick to it. It's the teflon of steels.
It's surface would have to be abraded like micro stones so that paints and other coating have something to grab. Rubber would make a better bonding agent because it would be able to take a hit w/o delaminating. But a scrape would still pull it off.
If you notice in the painting instructions it has to be blasted and treated with a dry solvent to a perfectly clean surface and then painted w/in a couple hours. It would have to be sprayed on in order to get it all on in that time.
The chromium in the steel combines with oxygen in the atmosphere to form a thin, invisible layer of chrome-containing oxide, called the passive film. The sizes of chromium atoms and their oxides are similar, so they pack neatly together on the surface of the metal, forming a stable layer only a few atoms thick. If the metal is cut or scratched and the passive film is disrupted, more oxide will quickly form and recover the exposed surface, protecting it from oxidative corrosion.
If I were to build a boat of SS I would use an A-20 material for the bottom and not worry about the paint. >>> Alloy 20 Stainless Steel | A20 Stainless Steel - Warren Alloy
This is what we use in the valve industry for chemical valves, which commonly have to be oxygen washed for the same reason (sanitary).
BTW- The passive film requires oxygen to self-repair, so stainless steels have poor corrosion resistance in low-oxygen and poor circulation environments. In seawater, chlorides from the salt
will attack and destroy the passive film more quickly than it can be repaired in a low oxygen environment
SS needs to breathe!