[OSM-talk] Tagging of maritime borders

Aun Johnsen skippern at gimnechiske.org
Wed Dec 31 11:31:33 GMT 2008


> Message: 10
> Date: Tue, 30 Dec 2008 22:32:45 +0100
> From: "Gustav Foseid" <gustavf at gmail.com>
> Subject: [OSM-talk] Tagging of maritime borders
> To: osm <talk at openstreetmap.org>
> Message-ID:
> 	<39f068130812301332s10bb9770y5af8ce4ace9b6f7a at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> In Europe a number of maritime borders have been tagged recently as
> national
> borders, with boundary=administrative and admin_level=2.
>
> Exactly what is tagged varies:
> North of Norway: A part of the exclusive economic zone
> Finland: 24 mile contiguous zone
> South of Sweden: Looks like an approximation of the 24 mile contiguous
> zone
> Denmark: 24 mile contiguous zone
> Germany in the Baltic Sea: Seems to be territorial waters, but I have not
> checked the ED50 coordinates given in the source with the actual points
> Germany in the North Sea: Old 3 mile territorial waters?
> The Netherlands: Source is AND? Line approx 1 mile of the coast, unsure
> what
> this is.
> Belgium: 24 mile contiguous zone
> Italy: The coastline, but some places into the sea and other places on
> land.
> Greece/Turkey: Only tagged where islands from both countries are close to
> each other.
>
> This is, at best, confusing and, at worst, wrong. The territorial waters
> and
> contiguous zones have very different legal status from a national border,
> you can for instance pass through the territorial waters of a nation
> without
> any border controls. Some details are in the Wikipedia article for United
> Nations Convention on the Law of the Sea.
>
> I would suggest that maritime borders are not tagged the same way as land
> borders. Should we have a new tag for maritime borders? Stop tagging them?
> Ignore the problem?
>
>  - Gustav
>
I agree with you there, I have myself interpolated a border 12nm off the
coast of Brazil, and tagged it just as the national border. I would like
to see more people take a look at
http://wiki.openstreetmap.org/wiki/Maritime_borders and help make up a
proper set of tags for maritime borders. I would like to see the various
forms of maritime borders to be tagged such as territorial waters, fishing
limits, economic zones and more.

-- 
Brgds
Aun Johnsen
(Over Web Mail)




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