re: Help - Boat Corrosion at Drain Plug

It looks like a brass plug, brass plug fixture, stainless screw, and aluminum boat. The issue is probably with the stainless and aluminum.

I’m assuming the boat is stored on a lift or in the water? As in you aren’t removing the plug often?

I’m not sure of the best thing to do with boats stores with the plug in with this situation I’d assume the manufacturer will know? That looks like someone has changed around the factory plug to some degree.