FR-HAUT-L3.1

Tide vocabulary, datum and depth of water

FR-HAUT-M3 · Tides · FR-HAUT-M3-A Chart datum and depth sums, the rule of twelfths from a standard port, and tidal streams by coefficient.

Every tide question ends with one sum: **depth = sounding + height of tide**. Get the datum and the drying heights right and the rest follows.

Independent study. xplor is not affiliated with the French maritime administration (DGAMPA), the ENSM, any DDTM or any préfecture maritime, is not an approved bateau-école or training centre, and awards no title, permit, certificate or endorsement. The extension hauturière is obtained only by passing the DDTM's 1h30 paper, in French, on SHOM chart 9999; all chart data in this course are illustrative. AI-drafted content pending subject-matter-expert review.