Thread: Tides and other such information

Originally Posted by kukuwai

Does that mean 'west is best' ?

The easiest way i got shown to estimate current / tide movement etc is the 'rule of 12ths'.

It can be applied to small or large tides doesn't matter. The way it works is the total amount of water to move on a tide is divided into 12 equal parts(represented by the solid dots in my sketch)

So 1 12th moves in the 1st hr, 2 12ths in the 2nd hr, 3 12ths in the 3 & 4th hrs. Then 2 12ths in the 5th hr and back to 1 12th in the last hr.

Google probably explains it better than me !

However i have found it useful especially when trying to explain tidal movement to others. Can just get 12 stones and draw some lines in the sand

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Yea logically that is how it should work but in practice out in the bay and up in the estuary, I find generally the big tides push hard from about an hour either side of high or low but the small tides can push from the start or sometimes you can wait 3 or 4 hours with little current then boom its off pushing hard or the other way around.....you can see it when you sit and watch your net in the estuary some times the water just sort of gets higher without really rushing in for a couple of hours and the next day it will rush in from the start.
Need more time on the water to sus it I think

Need more time on the water to sus it I think [/QUOTE]

Good idea