Hydro-Cat

The Hydro-Cat came out of liking catamarans and not liking what happens to them when the wind drops. Powerboats were the obvious answer and most of them ride badly in a chop that a cat would barely notice, so the company went after the catamaran qualities they did not want to give up: unswampable, smooth in rough water, and able to run in through surf onto a beach. What they drew is a powered catamaran with unsinkable hulls and a raised centre cockpit.

Since the hulls and the cockpit are built as separate components anyway, the design is a system rather than a single boat, and the same hulls can be set up for sail or for power. To get powerboat speeds the hulls borrow planing surfaces from competition tunnel-hull race boats, which makes her effectively a tunnel hull hydro without the roof: a lower top speed than a racing hydro, a smooth ride in open water, and enough lift to surf.