42 meters for 15 mils, hey the "$1m/1m" guys?

But seriously, if you look closely, this design, while supposedly very efficient, leaves amazingly small usable space. 2 decks and a pilothouse, with lower deck being housed in very narrow middle body, and both decks not nearly the length of full hull as you usually see - more like half of it. Even if the main deck is notably wider then comparable length monohull, it would be struggling to compensate. Plus assorted mooring pains due to width.
And I dread to imagine the "50m remote control from Iphone" scenario...