Oh, thank you for that picture.
So that is what a catamaran looks like,
and that is what two hulls means.
The catamaran design looks like it could have a nice flat floor for the passengers, and one that does not actually float on or in the water itself. Very interesting!
Now I am recalling that I may have seen pictures, in years past,
of smaller catamaran sail boats in races.
They were peculiar-looking things, nearly all huge sail, and very little boat.
Catamarans are great stable boats. Charted one in the BVI a few years back, a sailboat. The charter I went out out of Venice, Louisiana a few months ago was a catamaran, made it much more able to get out to the tuna, picture below.