This Volitan boat is featured prominently on a number of "Green Design" blogs, as well as June's Pacific Yachting magazine. I saw it at the checkstand while buying lines at West Marine. Google "Volitan boat", you'll find it.
This is literally the dumbest boat design I've ever seen. Where do I start.
First., we already have an existing technology for eco-friendly boat propulsion. They’re called “sails”. Hey genius, you're 5,000 years behind the news...
The site touts the twin 225 horsepower electric engines. At approximately 746 watts per 1 horsepower, that's 335,700 watts. Judging by the picture, the wings are about 92 feet tip to tip by about 10 feet wide. That's 920 square feet of solar panels, or about 86 square meters. Because of the X-wing design, only one of the wingtops will ever be facing the sun. (And the solar panels on the bottom of the wing never will be, what's that about?) At a charge rate of 150 watts per square meter per hour times 43 square meters, and assuming climate and weather allows 10 hours of direct sunlight per day, you'd need to soak up over 5 days of blazing sunshine to motor for one hour at full throttle. Well, maybe that tiny wind generator at the top of the mast will help. Or maybe you can throttle WAY back and just kinda bob around...Notice the entire boat is enclosed:
Less usable deck space than a Colombian Narcosub:
This starship/greenhouse design makes it impossible to actually interact with the ocean. Now in order to "sail" (I cringe at the thought of using that term to describe motoring VERY slowly while powered by tiny windmill) you'll no doubt need a bunch of sensors to let you know wind direction and force, sea state, etc. Since the "sails" are solid (and not foil shaped -- how's that gonna work?!?!?!) they offer no visual or auditory feedback that you're luffing or stalled. More sensors I guess? The systems are all electronic and hydraulic. And new and custom and untested and non-redundant. This is the type of thinking that Michael Pollan describes as splitting a holistic, elegant solution into multiple, discrete problems.
The sheer dimensions are ludicrous: a 100' boat with a 92' beam -- good times docking this beast! The building materials are pure Unobtainium and the scale guarantees that only billionaires will be shopping for this marvel of sustainability.
Shift your eyes away from the big picture down to the details: Where are the deck cleats to tie this montrosity to a dock? Where's the anchor windlass? Missing are the myriad and sundry details that allow you to live, work, and play on a boat. Has this guy ever even been on a boat? The propellers are at the very bottom of the x-wing keels. Hmm, do you think over hundreds of years, naval architects might have found propellers mounted just under the surface, directly behind the keel/skeg to be a little less, um, exposed? Can you imagine trying to navigate kelp or crab pots or coral reefs with fragile ducted fans on underwater stalks as your primary propulsion?
The kicker is that Volitan won the International Design Award for the best transportation vehicle of 2007!!! This abortion is the symbol of everything that is wrong with "sustainable design" : the belief that giant, expensive, overengineered gadgets are the solution to the world's problems. It's clearly dreamed up by an industrial designer with a deep, abiding hatred of everything boat-like about boats...
Sigh... OK... done ranting. For a link to a guy who HAS advanced the art of sustainable boat buidling, check out James Wharram (the guy often credited with the catamaran revival of the 50s and 60s.) Lately he's been doing great work designing boats to revive sail-powered trade routes in the Pacific.
His designs are an elegant blend of high tech, low tech, tribal tech. When you look at his boats: the lines, the simplicity, the ruggedness and yet performance, they're clearly drawn by the hand of a man who's been to sea.
One of the things I've learned my involvement with open source software as well as boats: the best human tools come from thousands of incremental improvements made by generations of average working people working and living with the product, not from ego-driven idiot-savants incented by the marketplace to create mystifying objects of passive aggressive novelty, rather than simple, honest artifacts of enduring utility.
Incidentally, I believe Macha, descended as she is from hardworking channel cutter and sailing lifeboat lineage, is an another example of evolutionary rather than revolutionary design. The builder and previous owner Jay definitely added some cool innovations, but the basic design is pretty darned traditional. In sailing her, and living aboard her, even still when I'm faced with a new situation or a new maintenance/repair task I'll frequently notice some new detail replete with robust elegance, and think "Oh... that's why it work's like that..."
A well designed tool or vehicle should feel like that to own. It fills you with confidence that generations of intelligent people have stood in your shoes, experienced the pickle you're now in, and tried their best to design and build for it... Good, traditional, evolutionary yacht design is a subtle, nonverbal communication from a lineage of seafaring forefathers, quietly whispering reassurance when the sailing gets rough. "Don't worry, this boat can take these conditions." In contrast, when I look at a boat design like the Volitan, (or a Hunter, or a MacGregor 26X), I feel like I know more about boats that their designers. And that frankly scares the hell out of me, because I certainly don't know much!