Last Updated
：2025/11/21
chart datum
Noun
Japanese Meaning
海図上で、深さが表示される水準より下、潮位がその上に表される水準を指す。通常、春潮時の低水位の平均値が用いられる水位基準。
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(nautical) the level below which depths are indicated and above which heights of the tides are expressed; usually mean level of low water at a spring tide
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chart datum
Before entering the harbor, the officer checked the chart datum to confirm the minimum safe depth.
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Before entering the harbor, the officer checked the chart datum to confirm the minimum safe depth.
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