Most of the boats and yachts in the world employ a single-hull design, with the classic shape offering merits via the huge enclosed living space they can provide.

But every bit of hull displacement becomes extra problematic over rough waters.

These videos show:

• a wakeboarding trial with the red Helicat22

• a rough-water scenario at speed.

Watching some of the bone-jarring impacts suffered by James May and the TopGear team over the years is proof enough — and reason enough — to slow down to a crawl in any rough seas.

But how un-fun is going slowly in a fast car?  Even worse on the water, with the throttle only a tease away.

Even so: After a few 2.5-G spinal crushes on impact, even the wildest of wild-men will back off the throttle of a single hull boat.

These are seriously huge impacts, and each one theoretically weakens the structure of any ship.

Sophisticated dampers and air-ride seating cannot solve this fundamental surface area impact problem for single-hull craft.

So the catamaran is really coming into its own. Huge catamarans are already the preferred method for SeaCat jet-powered ferries from Australia, and diving and pleasure boats all over the world.

But a lightweight, motorized catamaran has never been quite as feasible in the marine engineering world. The issue is with the net base area that generations of sailing catamarans have relied on for their extreme lightness.

Hanging on to the hammock canvas for dear life is not exactly a premium experience at 30 knots in rough seas.

The Helicat22 overcomes these issues in three ways:

— A hyper-rigid frame of nearly 1-foot-diameter tubular steel connects each outrigger

— A single-piece cabin in a teardrop shape rides atop this middle chassis

— Twin props at the back of each water wing ensure great power, without a guzzling internal V8 (or two)

But best of all: no slowing down over big swells. And no chronic spinal pain c/o crushed vertebrae, slipped disks … or worse.

The Helicat22 is new-for-2014, and on display at the Miami Boat Show this week for prospective owners.

What is the price, you ask? It is upon-request via Sandy (at ) helicat.net

The yellow 2014 Helicat22 is for sale in Tacoma, Washington for about $70,000, however, for a ballpark idea.

The red Helicat22 is also nearby for Miami scenic tours.

The Helicat22 an unforgettable way to cruise over the waves with the smoothness of a hydrofoil, but the affordability and ease-of-use of simple out-board pleasure craft.

Helicat22 Specifications, Features and Options

Equipment from Factory