The thing needs a railing on the edge of the deck. Did the designers think the only place the thing would be operated on is a gentle mountain lake?
Well, one thing is for sure. There's no need for a head. The entire lower deck is one. Self-cleaning!
No, it will never become real, because it is an asstastic design! The oceans have something called "waves". Some of them are more than 5 feet from peak-to-trough. That's all you need to know.