The rule is called the Rule of Twelveths.

Assuming a six-hour high-tide to low tide cycle

In the 1st hour 1/12 of the water will move.

In the 2nd hour 2/12 of the water will move

In the 3rd hour 3/12 of the water will move

In the 4th hour 3/12 of the water will move

In the 5th hour 2/12 of the water will move

In the 6th hour 1/12 of the water will move

So in an area with 6' tides, the height of the water will drop:

6" in the first hour

12" in the second hour

18" in the third hour

18" in the fourth hour

12" in the fifth hour

and 6" in the sixth hour.

In a twelve hour cycle, it will be every two hours.

__________________

Sailingdog

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**Telstar 28**

New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take

a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps

her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity *(edited)*

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