
Where The Earth Is Not Flat

Given that the Sea of Japan has complex tides and generates a fairly fast tidal speed in the Tsugaru Channel (100–200 cm/s), we plotted our course between Tappi Misaki on Honshu to Shirakami Misaki on Hokkaido.
We theorized that success was only possible if we could cut across an expanse of water that could flow as much as 12 meters per minute in a lateral direction that we did not want to go. It was a risky course, but we gave it a shot.
But a more fundamental issue for us who were educated in the American educational system was, ‘Why is the sea level different?’ We were always told that the sea level is the same no matter where we go around the world.
Evidently we now know the real reason why this false American educational factoid is not true:
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