[Tagging] RFC ele:regional

[Martin Koppenhoefer]

Am Fr., 8. Mai 2020 um 14:35 Uhr schrieb Colin Smale <colin.smale at xs4all.nl
>:

> As I mentioned before, the national datums of the Netherlands and Belgium
> differ by over 2m, which for everything connected to water is very
> significant. Waterways often form the border, with bridges that cross the
> border. You cannot use a map/chart (at last for tidal waters) if you don't
> know what datum it uses.
>


it seems Belgium is an "outlier" because they use the low water level as
reference.


Cheers
Martin
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