Brittany tides?

[rotrax]

I thought parts of the Severn & Bristol Channel claimed the greatest tidal range in Europe (and second the World, after the Bay of Fundy), at around 14m?

Of course what extent of seabed is revealed when the tide goes out is generally more closely related to the slope of the seabed than the tidal range. I'm sure there must be drying parts of the East Coast that extend for several kilometres at low tide, despite a much smaller range, while there must be rocky parts of coasts with huge tide ranges that have negligible drying areas..

I might generously let pass as poetic licence the reference to the drying coast around St. Malo being 'ocean floor'.

To get a real life visual check on tidal height one needs to use the Sea Lock at Portishead........................................

You need bloody long lines to control the boat!

 

[oldmanofthehills]

"A walled French town on the coast of Brittany, Saint-Malo has the highest tides in Europe, with water that can rise 13m over the course of six hours. When the water goes out, it reveals several kilometres of ocean floor."

Danger: Saint-Malo and the highest tides in Europe

Which is why I carry 65m of anchor chain.

Bristol Channel can indeed manage 14m rise on occasions, and on days when it is only 11m one cannot get off the drying moorings. Climbing up pier ladder at Portishead was fairly alarming while mudstuck and waiting 3+ hours for the lock gates - and boat was by no means at lowest astronomical in its spot.

However re the tides the important thing isnt exact high water time or height, unless you are moving giant rig or cargo ship with about 1m guaranteed clearance at HT (Bristol Channel again), the important thing is when tide turns which is about 2 hours later near Plymouth or the lower part of the Irish sea

 

[Zagato]

Roger Barnes 'DCA' has mentioned on more than one occasion that the tide flow direction had been completely wrong on his Garmin in the Douarnenez region!
More worrying I was trying to get into Ashlett Creek in fog and the creek and markers were way out on my Garmin. Perhaps it was because I had not updated it that year! A boat coming out of the creek saved the day... good timing!