I grew up boating up and down the New England coast. As long as there are big boats in the water there will be a need for good mechanics, and plenty of boat owners willing to throw money at you.

I remember stopping at a marina for fuel once and we saw a mechanic replacing an outboard engine on one of those big “cigarette” boats that often have 3 or 4 engines on them. We struck up a conversation and learned that the boat owner was a rich idiot who didn’t know how to operate the boat properly and would blow an engine almost every time he took the boat out. It happened so often that the mechanic had started keeping a spare $20,000 engine in stock just for this boat. He was more than happy to take money from the idiot boat owner to keep the guy happy.