Some of the sailboats get reported in the "inboard" category.

Most of the sailboats have inboard engines.

Yes, there is some sloppy box checking going on, but its at the dealer level.

However, new sailboats are sold at sailboat only dealers (a dealer who wishes
to sell both new sailboats and new powerboats opens two separate dealerships,
otherwise he has buyers for neither boat) and you would think that a new
sailboat dealer would know what he is selling.

It looks like nobody is buying much of anything but small boats and a handful
of extremely high priced yachts.