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![Tide height calculator Tide height calculator](https://www.nautic-way.com/86486-medium_default/tide-height-calculator-maritime-bookshop-nautic-way.jpg)
Data sheet
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Allows you to know in a few seconds, without calculation or risk of error, the variations of height of the tide according to the rule of twelfths.
Indispensable on board, especially in case of sounder failure.