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(Quartz)   The world's largest solar-powered boat is just the world's largest piece of floating debris at night   (qz.com) divider line 55
    More: Amusing, University of Geneva, boats, Gulf Stream, West Indies  
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9740 clicks; posted to Main » on 09 Sep 2013 at 5:38 PM (43 weeks ago)   |  Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»



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2013-09-10 04:15:36 AM
Tr0mBoNe:
Also, a rough estimate is 3400 NM from just off the coast of Spain to somewhere in the D.R. .. 22 days means an average of just over 6 knots. Most marine traffic is somewhere more than 12 and less than 25.

The current sailing transatlantic record is 3 days 15 hrs and change.  Average speed nearly 33 knots.  But that's West to East, which is faster.  For East to West the record is 7 days 11 hrs.  Even a century ago ships sailed across the Atlantic in much less than 22 days.  Only averaging 6 kts is slower than than a pretty ordinary sailboat far smaller than 115ft.
 
2013-09-10 06:36:05 AM

GeneralJim: Slaves2Darkness: Just think how much energy they could save if they made those sails out of solar panels. Or better yet if they managed to figure out how to make a container ship completely solar and wind powered.
Actually, I'm kind of surprised that there are no simple sail-powered transport ships.  Yeah, they'd be slower, but it takes a LOT of fuel to drag a ship across the ocean.  For loads that are NOT time-critical, it would be a great money-saver.


Problem is, we subsidize oil, so trans-oceanic shipping is cheaper than it "should" be in a free market.  Sailing cargo ships were reasonably common right through the pre-War period, but are pretty much gone now.

http://www.lowtechmagazine.com/2009/04/cargo-ships-then-and-now.html

Now cue the "but we need our cheap crap from China NOW!!!" crowd...
 
2013-09-10 08:22:01 AM
Yes, I envision a burgeoning market for products that need to be delivered slowly and in very small quantities at great expense.  Where can I invest?
 
2013-09-10 08:30:26 AM

SVenus: Tr0mBoNe: just over 6 knots. Most marine traffic is somewhere more than 12 and less than 25.

So, flotsam that moves slightly faster than the tide.


FTFA:

 On May 4, 2012,  it completed a 584-day, 37,000-mile (60,000 km) circumnavigation.

OK, assuming "mile" here is nautical miles, that's 37,000 / (584*24) = 2.6 knots average speed.  That's something Diana Nyad could maintain with a little help from certain recreational pharmaceuticals.

In all fairness, though, that probably includes a number of stops.
 
2013-09-10 09:22:04 AM
Subby has obviously never been gouged at a gas dock.
 
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