

Would that really help though? Gold is super soft so I think it would need to get frequently coated/plated again — and we already have pretty good and resistant marine paint.
Titanium is very corrosion resistant, not to mention plastics/fiberglass/carbon fiber, as I understand.
But yeah, cheap gold would be be great, just seems to me that the market would more be in e.g. electronics, where both corrosion resistance and electrical conductivity are required (something gold is fairly unique at).
Because not all humans strive for honor.