If you look from above, it seems that you know the approximate speed of a boat by the size of its wake. A veteran can feel it.That’s 40 knotsSeptember 11th
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潮ダイアリー 9月11日( ´・◡・｀)
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If you look from above, it seems that you know the approximate speed of a boat by the size of its wake. A veteran can feel it.
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