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.
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.
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