Changeset: 103963302
added 12 mile zone in Marmara Sea
Closed by hanzlan
Tags
created_by | JOSM/1.5 (17702 de) |
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source | marineregions.org |
Discussion
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Comment from mappinglander
Hello, can I ask why did you create the border zone in the sea, if you are willing to explain? I don't know much about sea boundaries but it seemed weird to have country boundary in the middle of sea.
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Comment from hanzlan
Hello, it is indeed a very exceptional sea border in the middle of the Marmara Sea. Each country has territorial waters that extend 12 nautical miles from its coast. There are a few countries that only apply 6nm for their territorial waters (e.g. Greece and Turkey in the Aegean Sea, this is not properly mapped in OSM yet) and some even apply only 3nm (e.g. Gibraltar and Greenland). Countries may declare their bays as internal waters by drawing a baseline from one cape to another, e.g. Italy's Gulf of Taranto. Normally, this could be done for the Sea of Marmara as well, but I haven't found anything about it, maybe due to the fact that it is a major international seaway (the only access to the Atlantic Ocean for countries like Romania, Ukraine or Georgia). A good source for territorial sea boundaries is https://www.marineregions.org/eezmapper.php, from where I took these boundaries.
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Comment from mappinglander
Hello, to be honest I didn't also find an exact source but it seems like the Marmara Sea is considered as an internal water by Turkey, (see http://www.sam.gov.tr/pdf/perceptions/Volume-III/june-august-1998/GunduzAybayNiluferOral.pdf , the article claims it was declared as internal water in Montreux Convention with no opposition.) but the straits seem problematic. I suggest reverting the border to prior version because I also wasn't able to see any source mentions in marineregions.org about Marmara Sea boundary even though it's drawn with 12 nm boundary and it actually sounds a bit weird as I've said before.
Ways (13)
- 937799931, v1
- 937799932, v1
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- 937799934, v1
- 937799935, v1
- 937799936, v1
- 937799937, v1
- Border - İstanbul - Tekirdağ (15093758), v12
- 82287168, v4
- Yalova - Bursa il sınırı (82287691), v6
- 82287693, v3
- 82287694, v3
- Balıkesir - Bursa İl Sınırı (85469588), v6
Relations (7)
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