..Search, for instance, for “images Nauticat” and you’ll see all sorts of shapes as well as sizes.
Look at the old Nauticat company website, for example:
and there you’ll see all sorts of different yachts which are all called “Nauticat”!
Some are ‘ketch’ rigged (with two masts), some are ‘Bermudan’ rigged (single mast), some have a raised aft deck and an enclosed wheelhouse, some have an open cockpit.
The various descriptions of the different models are on that page.