Minchsailor
Well-Known Member
There is a significant tidal stream in the Straight of Medina between Sicily and Medina, referenced to HW Gibraltar. Been a while since I was down that way but seem to recollect it was around 2-3kns.
Had to look ( as one does ) on Google Earth. That is one serious bit of boat parking at Cleopatra Marina. Also, you may know what it is in Preveza that wishes to remain anonymous. Back to tea and toast.
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Changes in atmospheric pressure will cause sealevel changes of a few centimetres. Almost all the change is down to wind driven currents.
Sea level changes with atmospheric pressure by a predictable amount: around 1cm per millibar of pressure. In areas of the Med with a tidal range of 30cm, which is fairly typical, this can obviously be as significant as tidal effects on currents. Even in regions with a much larger tidal range, such as the UK, barometric effects can have critical effects on flood defences.
Conversely, in some areas in the Evia Channel (which includes Khalkis, mentioned earlier), normal tidal range can exceed half a metre. Many an experienced sailor (Rod Heikell included) has found themselves hard on the putty at low water after failing to take account of this. The statement that there are "no tides in the Med" is untrue.


