Polygons of countries including territorial waters

[المشرف العام]

Where can I get polygons (multipolygons) of all countries of the world including the territorial waters of the countries?

OpenStreetmap displays these areas but I can't find an extract of this subset of the OSM data.

• is there a subset of OSM data available, just containing the territories (incl. water territories) of a country as multipolygons ?
• or, can I find this set of polygons somewhere else?

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