"Ellen MacArthur" wrote
| Rule of thirds works for tide height. In the first two hours it goes down 1/3 of its height.
| In the next two hours it goes down 1/3 more and in the last two hours it goes down the last
| 1/3. (I think.)

Oops! That doesn't sound right. Maybe it goes down 1/4 the first two hours and 1/2 the next
two hours and 1/4 the last two hours. Yes, that's it. Makes more sense that way. It goes down
faster in the middle hours.

Cheers,
Ellen