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Search term: charted depth. 1 results

    Tidal gate calculator (Rule of twelfths)

    This calculator calculates tidal gates using the rule of twelfths, estimating the height of the tide at any time, given only the time and height of high and low water.

    Tidal gate calculator (Rule of twelfths)Creative Commons Attribution/Share-Alike License 3.0 (Unported)

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