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by gpvos
4450 days ago
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It was originally 7 fathoms. Later the value was refined a bit because of newer measurements and updated definition of the nautical mile. Why 7, I don't know. Wikipedia seems to indicate that the definition of a knot was derived from that of a nautical mile, but I wonder if it wasn't the other way around originally. https://en.wikipedia.org/wiki/Chip_log#Origins |
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