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Jan 27, 2016 at 18:15 vote accept mjr
Dec 16, 2015 at 21:16 comment added Wingman4l7 @DA: and it may in the future! Research is being done in using large kites / parafoils with computer-controlled lines to augment the traditional engine power used in cargo shipping.
Feb 4, 2015 at 22:07 comment added Steven Kohus We still ship things today by horse and carriage in some parts of the world - even in fairly large cities. When I visited China, it was quite common to see people transporting things by bicycle in large cities. Assuming boats in the future aren't just for pleasure purposes, I could see it still being economical for many. So I agree with this answer.
Feb 2, 2015 at 23:53 comment added DA. And regarding 'free energy that would replace shipping by water'...note that for a few thousand years, shipping by water was using free energy: wind.
Feb 2, 2015 at 21:59 comment added James Water does the work.
Feb 2, 2015 at 21:30 comment added user3082 This. In fact, put in a nice header: We're the Crazy ones (or out of historical sync).
Feb 2, 2015 at 21:01 history answered Samuel CC BY-SA 3.0