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On the calm morning, the old seafarer demonstrated how to use the Dutchman's log, tossing a chip overboard and timing its passage with a sandglass.
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On the calm morning, the old seafarer demonstrated how to use the Dutchman's log, tossing a chip overboard and timing its passage with a sandglass.
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Related words
Dutchman's log
Noun
historical
Japanese Meaning
船の航速を測定する初期の装置。具体的には、船員が船外に浮体を投げ、砂時計でその浮体が甲板上の2点の間を通過する時間を計り、船の速度を推定する装置。
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