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very impressive, worlds largest solar powered boat

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oldpink
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PostPosted: 15:36 - 02 Sep 2013    Post subject: very impressive, worlds largest solar powered boat Reply with quote
bet it costs a few bob Laughing

https://www.dailymail.co.uk/sciencetech/article-2408340/Worlds-largest-solar-powered-boat-powers-arrives-Britain-spectacular-style.html?ito=feeds-newsxml

https://i.dailymail.co.uk/i/pix/2013/09/01/article-2408340-1B8BC7CA000005DC-46_964x626.jpg
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P.addy
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Joined: 14 Feb 2008
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PostPosted: 15:43 - 02 Sep 2013    Post subject: Reply with quote
Arrives in Britain, prepare to moor for ~9 months Laughing

Where can you walk though... its all panels.
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daemonoid
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PostPosted: 15:59 - 02 Sep 2013    Post subject: Reply with quote
I'm not sure solar is the way to go on a boat. I have this ingenious idea for a wind powered propulsion device though...
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Rogerborg
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PostPosted: 16:15 - 02 Sep 2013    Post subject: Reply with quote
So, about 20kW sustained over a day, i.e. a pretty weedy 250cc engine? If they're really averaging 5+ knots out of that, then fair play to the designers.

I imagine they'd be absolutely shafted in any serious or prolonged storm though.
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fatpies
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PostPosted: 16:17 - 02 Sep 2013    Post subject: Reply with quote
daemonoid wrote:
I'm not sure solar is the way to go on a boat. I have this ingenious idea for a wind powered propulsion device though...



You mean stick a wind turbine on it,and use that to power an electrical motor? Wink
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daemonoid
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PostPosted: 16:57 - 02 Sep 2013    Post subject: Reply with quote
fatpies wrote:
You mean stick a wind turbine on it,and use that to power an electrical motor? Wink


No, no, no... the turbine would power a heating unit which would be used to generate steam the steam could then be used to drive paddles on either side of the boat.

And then, because it could move by itself it would generate its own wind, which would of course give it free energy / perpetual motion. Now that's the tech the government's been hiding from us all these years! Making us invest in solar when they know damn well there's free energy out there.
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oldpink
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PostPosted: 17:08 - 02 Sep 2013    Post subject: Reply with quote
been done

https://www.navagear.com/wp-content/uploads/2007/02/windowslivewriterwindturbinepoweredsailboat-1270awindmill-boat51.jpg

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Chalky.
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PostPosted: 17:08 - 02 Sep 2013    Post subject: Reply with quote
Rogerborg wrote:
So, about 20kW sustained over a day, i.e. a pretty weedy 250cc engine? If they're really averaging 5+ knots out of that, then fair play to the designers.

I imagine they'd be absolutely shafted in any serious or prolonged storm though.


Anything less than 10 knots and you're as well sticking a mast on it and sailing!
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oldpink
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PostPosted: 17:23 - 02 Sep 2013    Post subject: Reply with quote
Chalky. wrote:
Anything less than 10 knots and you're as well sticking a mast on it and sailing!


Quote:
Crossing the Atlantic in 22 days, the speedy solar boat compares favourably with a 40 foot sailing ship, which usually takes around 35 days to cross the ocean


they say its about 1/3 quicker than a sail boat
though I'm sure racing boats go a lot quicker (sail ones that is)
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Polarbear
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PostPosted: 19:11 - 02 Sep 2013    Post subject: Reply with quote
Sod Atlantic storms in that.

As said, why bother. It's cheaper and easier to fit sails. That would only beat a sail boat in a calm sea. Anything over about force 5 a sail boat would piss all over it.
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Chalky.
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PostPosted: 22:04 - 02 Sep 2013    Post subject: Reply with quote
oldpink wrote:
Chalky. wrote:
Anything less than 10 knots and you're as well sticking a mast on it and sailing!


Quote:
Crossing the Atlantic in 22 days, the speedy solar boat compares favourably with a 40 foot sailing ship, which usually takes around 35 days to cross the ocean


they say its about 1/3 quicker than a sail boat
though I'm sure racing boats go a lot quicker (sail ones that is)


It's not a particularly good comparison though - this thing is 115 feet long! A 115 foot sailing yacht would cross the atlantic at 20 knots +

It also said it cruises at 5 knots - even a 40 foot sailer would cruise at that or a little bit more.
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doggone
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PostPosted: 22:16 - 02 Sep 2013    Post subject: Reply with quote
It weighs 9 tons, 8.5 tons of which is batteries - wait till they need changing as performance drops off.
It's an impractical stunt and could never be used for a commercial vessel.
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binge
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Joined: 03 Jul 2004
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PostPosted: 22:37 - 02 Sep 2013    Post subject: Reply with quote
https://thegoodjokes.com/wp-content/uploads/2010/10/12867202697921.jpg
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Old Thread Alert!

The last post was made 12 years, 212 days ago. Instead of replying here, would creating a new thread be more useful?
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