Modern vessels are fat beasts. Container ships running full tilt max out at just under twenty-nine miles per hour. Bulkers at half that. The fastest civilian ships we have are . . . passenger cruise liners, mostly because they are mostly empty space. No joy in refitting them to ship corn. Modern transoceanic container ships hold thousands of containers, more than half of which are packed to the gills with intermediate goods essential to the fabrication of pretty much all manufactured products. Those intermediate products are built by a workforce who only know how to produce one specific piece
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