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Forum: Anchoring & Mooring 07-12-2010, 07:36
Replies: 50
Views: 10,892
Posted By GordMay
Yes, indeed. The Rule of Twelfths is about the...

Yes, indeed. The Rule of Twelfths is about the rise and fall of the water levels at various stages of the tide while the Rule of Thirds and 50/90 Rule deal with current.

These rules are rough...
Forum: Anchoring & Mooring 07-12-2010, 05:53
Replies: 50
Views: 10,892
Posted By GordMay
Indeed. In parts of the northern Gulf of...

Indeed.

In parts of the northern Gulf of Mexico and Asia, tides have one high and one low water per tidal day (diurnal tides).

The map shows the geographic distribution of different tidal...
Forum: Anchoring & Mooring 07-12-2010, 05:07
Replies: 50
Views: 10,892
Posted By GordMay
The Tidal Rule of 12 states that, in the first...

The Tidal Rule of 12 states that, in the first hour after low tide the water level will rise by one twelfth of the range, in the second hour two twelfths, and so on according to the sequence -...
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