[FF44]

Hi everybody,

A large comparison between Mr Tides and the french hydrographic service (SHOM) for hours and heights of tides in different harbours of the Channel and Biscay coasts comes as follow :
- For all locations :
Max difference hours : +/- 6 minutes
Max difference heigths: +/- 10 cm
- Warning - Saint-Nazaire :
A large difference of heights : 40 to 50 cm more in Mr Tides than SHOM.
The reason is that, in 2001, the chart datum of the area was changed up to 30 cm.
This probably explains this great difference.

[AugustH]

Thanks for the information, I'll take a look at that station and see what I can do. Unfortunately the latest and greatest harmonics for France are unavailable due to copywrite problems with the British, so updates don't make it into the database anymore. Sigh.

August