Wave Powered Boat to Sail From Hawaii to Japan 152
CaroKann writes "In the middle of May 2008, Kenichi Horie, an adventurer known for such feats as paddling a pedal powered boat 4,660 miles from Hawaii to Okinawa in 1993, will be sailing a wave powered boat from Honolulu's Hawaii Yacht Club to the Kii Channel in Japan. The boat, a 3-ton catamaran named the Suntory Mermaid II, works by virtue of the fins located at the front of the boat. These fins "generate thrust force by moving up and down like the tails of dolphins and whales and absorbing the energy of the waves." The system can propel the boat no matter which direction the waves come from. Because the wave propulsion system absorbs the energy from the waves, a passenger on the boat will experience a smooth ride. With a top speed of about 5 knots, the journey is expected to take about 2 to 3 months."
Wave powered boat (Score:1, Interesting)
Re:Wave powered boat (Score:5, Insightful)
Re:Wave powered boat (Score:5, Interesting)
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rj
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What I would be REALLY interested in is selling a "spiderarm" upgrade for regular boats. The tip of the arm could be completely bouyant, the shaft of the arm inflexible, and the head of the arm could be attached to the ship via a hinge, with the reciprocatin
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Re:Wave powered boat (Score:5, Funny)
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that and this tech is less manpower intensive than sails.
I could see robots doing this in the future. If the ship has trouble (or is attacked), it could take pictures/video powered by solar panels and beam them via satellite for rescue or Interpol.
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I wonder how this wave power will scale up...
Re:Wave powered boat (Score:5, Funny)
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In all seriousness, it would be interesting to see if this system could increase the speed of a ship running under some other form of power, all while increasing the smoothness of the ride. It would also be interesting to see if the power it generates can scale up with the weight of the ship.
Future journey times. (Score:5, Funny)
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Sure that's a long time, but at least it's Suntory Time [imdb.com].
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Says it'll also have solar power (Score:2)
If he's going to have a PC on board I wonder if he'll have Internet hookup via the Satellite phone. And if so if he'll be posting a blog to detail his journey. That would be pretty sweet.
Does anyone know if he has a personal web site regarding his voyage ? TFA doesn't mention one.
Re:Says it'll also have solar power (Score:5, Funny)
Captain's log, seadate 52271.2: More waves. Also more water. Still on the boat.
Captain's log, seadate 52361.9: Saw a fish this morning. Most exciting thing all week. It had fins. Also a tail.
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Day 6.... 120 miles further out in the middle of no where.
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Interesting way of transportation (Score:5, Funny)
I'll keep you informed if I continue to the next fases of my daring contruction plan.
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My God, Mr. Scott. You've invented impulse engines. Now get started on that warp drive.
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The problem is nuclear fallout of course, estimates are that ~10 more people would die from cancer per launch, but if cleaner nukes could be devised it would blow all other methods of space travel out of the water.
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Some people have sacrificed their lives for the space program directly, would I sacrifice my life 10/6,000,000,000% of the time? If 10/6,000,000,000 sounds unreasonable to you then you need to learn the odds that y
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Re:Interesting way of transportation (Score:5, Funny)
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You misspelled faeces. Funny, I do all my best thinking on the crapper too.
Semi-serious response (Score:2)
Let's do the math (Score:3, Interesting)
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Re:Let's do the math (Score:5, Informative)
The effect that makes it possible is that the vertical motion of water under waves progressively decreases with increasing depth. The vanes are supported by two streamlined struts that stick down several feet below the boat. As the boat rises on the front side of a wave, the bottom of the strut assembly moves up at the same rate as the boat, but the water at that depth is not rising as fast. Therefore, the vanes attached to the struts are being dragged upward relative to the water around them.
The vanes are hinged forward of center, so as they're dragged up they rotate to an upward slant until they hit a stop; then they act as a kind of propeller blade, generating a net forward force. As the boat goes down the backside of the wave, they rotate to a downward slant and again you get a forward force.
I built a model of one of these as a kid...worked remarkably well.
rj
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Perhaps a more complex power transmission would be useful on that scale, generating electricity.
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Re: undo moderation (Score:2)
the boat was then acting against a fin under water, that fin is held down by all the weight of the water above it (or held up by the water below it)
in the wave pushing up situation, the fin is angled so that it has a slope where a few inches of rise, over a few feet of run.
So in order for the boat to move up a few inches, it must move forward a few feet at the same time. This fin then flips into the downward position once the pressure swaps directions so then f
Smuggler's dream (Score:5, Interesting)
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Having stuff sitting on the seas means you're not getting paid for stuff you've already produced. Constantly having 3 months of production at sea is much more expensive than paying for the fuel of a regular cargo ship. And this is not even taking into account all the products that would get spoiled or go out of fashion in 3 months.
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I don't know how true this is, but it is a very strong force in the business world. I personally think there are other factors that weigh more, such as the cost of running out or being un
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Say you make iron ore. You produce the ore, put it on a ship and send it to the smelter. If it takes 3 months, that means you'll pay for the production in January but will not get paid for the ore until April. While at sea, the ore does nothing for you. It's like lending the value of the ore to someone and not getting interest. If the speed of delivery increases, the amount of ore that's just sitting ar
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Capital cost of the ship? (Score:2)
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Let's say that a big version of this boat costs $100m. You want to buy 24 of them to have a pipe. That's $2.4b, and you have to add in the value of the ore or whatever you are shipping. You only have to buy the ships once (ignoring depreciation) but you have to pay for them up front, and that is an eternal cost from the pov of the company. They could have built a mine which would be providing income for many years with that $2.4b55
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So now you're talking about a steady stream? Putting another $10M of goods/resources out on one of these things each day? That sounds like it is getting to be a really HEAVY supply chain. You're 'floating $300M worth of stuff at any one time, if it's a 30 day trip.
Alright, I'll agree to divide the skin of the bear which has yet to be caught (since the boat does not yet exist). The early stage chain could be a ship leaving once a week. Or even once a month. And then arriving (after 6 months) once a week (or once a month if that's the choice). The whole point of slow shipping scheme is to eliminate shipping cost by increasing upfront cost. Isn't that a familiar business model in natural resources exploration? Exploration and prospecting takes a long time, but it
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This somewhat similar device should suit your coke smuggling requirements. http://news.bbc.co.uk/1/hi/technology/7234544.stm [bbc.co.uk]
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Radar signature? If you make it entirely from plastics (or at least the hull), you could get that
Heat signature? The surface of the boat will heat/cool faster than the surrounding water. But if you put a generator on it, there will probably be a heat signature.
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Sailboats are already so hard to detect on radar that it's a problem. Most sailboats have radar reflectors installed in order to be seen by bigger vessels. One would think that the aluminum mast would suffice but since it's round it doesn't. The reflectors are ridiculously small compared with the mast but they have numerous sharp edges, which make them visible (my boat is 22 ft with a 33 ft mast but the radar r
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And surveillance, airborne radar probably are much better than the big ship mounted counterparts - yet, they might not suffice.
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Do any smugglers now use actual sails? Radar was designed to detect modern ships, not sailing ones.
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There's nothing intrinsic in radar that recognizes age; even old sailing ships would still be somewhat visible on radar. Stealth is as much dependent on shape as materials, and big things perpendicular to the radar (especially when made of metal) are about as unstealthy as you get.
versus fossil fuels (Score:2)
Wow, that's pretty good. How long does it take in a boat powered by fossil fuels?
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The SS United States was the fastest, or one of the fastest, non-nuclear ships and could sustain 35 knots on fossil fuels but is currently gathering rust in South Philly.
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Between Smart And Genius? Orders of Magnitude (Score:3, Interesting)
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Brilliant yes, new no...
http://www.rexresearch.com/boats/1boat.htm#wave [rexresearch.com]
rj
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waving (Score:2, Funny)
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When he leaves, he always waves goodbye
Or does he wave "aloha"?
That would double the meaning...but does it double the amount? Will he go 2 times faster? If he paints it red will it go 3 times faster?
These are just the kinds of things real daredevils and, dare I say, geniuses (tm) of our day and age experiment with.
That and lightening bolt stickers. Which frankly, I'm too afraid of experimenting with on my own vehicles, lest I break free from the earth's gravitational pull and hit the sun.
Maybe if I go at night...
Also called... (Score:2)
Ok, a multi-directional surfboard.
Propulsion for artificial islands (Score:3, Interesting)
So Japan has developed the Wave Motion Engine? (Score:1, Funny)
Long Journey Time (Score:1)
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Ergo, the computer
WTF? (Score:1)
Interesting facts about boats and cruisers (Score:5, Interesting)
At 3 tons, this boat is very light. A 3 ton boat can be flipped very easily by a rough wave. Coupled with the fact that this is a catamaran, you have a boat that is equally as stable upside down as it is righted. Our boat is 12 tons without food and equipment (we have about 1.5 tons of spare parts and tools alone!) -- 8 tons of this is keel weight. It cannot flip over and stay upside down (unless the keel breaks off).
As for the stmt that says it will absorb the energy of the wave making for a smooth ride: don't believe it. That's like saying your knees can absorb the energy of your uneven surface. If there is more energy than can be absorbed, you will experience a rough time standing up. Same thing applies here. Do you know how much energy is in a wave? Think about the Tsunami on Boxing Day 2005. Think about wave-absorbing power plants. The amplitude of the wave doesn't even matter: it's a combination of amp. and freq. I've been in waves that are 60 feet tall, but they're 500 feet apart. This makes for a smooth, duck-like, enjoyable, infinity view when you crest, and a rather enclosing feel when you trough. :-)
Interesting facts: 5 knots is quite slow, but manageable. A knot is about 1.8 km/hour, so we're talking about 9 km/h which is actually slower than a human can run. Captain Cook sailed around the world at about 2.5 knots. He literally went around at walking speed.
As an aside, you can always tell the difference between the cruiser boat and the bay-sailer simply by the sheer amount of shit attached to every surface. :-) Also, look at the size and number of anchors. If there are two or more anchors: cruiser. If the anchor looks like it should be grounding the USS Enterprise: cruiser.
Rime of the Ancient Mariner Wisdom (Score:1)
I don't think the waves are strong enou
Does anyone else remember Gausefin? (Score:3, Interesting)
I remember reading an article in Popular Mechanics or Popular Science back in the mid to late seventies about an experimental wave-powered boat named "Gausefin". What stuck with me all these years was how cool the craft looked. It was a sleek monohull with a low deckhouse, not a catamaran like Suntory Mermaid II. Imagine the dream-like shape of a sailing yacht, but without the masts or sails. The fins that drove the vessel were flexible, and were the only moving parts of the propulsion system; there were no hinges or springs.
Does anyone else remember the Gausefin, or have any information about what happened to this craft? I haven't even been able to find it with Google, and I'm beginning to wonder if I imagined the whole thing.
Call Greenpeace (Score:3, Funny)
Confusion about the date (Score:2)
Re:Gold Medal (Score:5, Insightful)
Isn't it an enormous feat already that somebody comes up with this idea and makes it work?
It might be marketeable in the future... just like almost every innovative technology. Right now it's a feat to marvel at though.
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The guy's a genius; beer kegs have already saturated the market for bulk beer sales. All he has to do is make a boat out of it and it sells!
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(PS: Waves aren't the same as ambient heat.)