Hey, Henry! First of all, welcome to PAFF! It is good you made an initial post in the New Member Check In, but you probably should have just introduced yourself. I think this post would be better suited to the "Gear Talk" page, so I will re-home it there.
I think your post is a highly niche question, however, so I am not sure if you will get a lot of great responses, or at least maybe no better information than a Google search could turn up. But we have some boat guys around here, so maybe they will chime in. What kind of boat is it?