According to Wikipedia, the term territorial waters is sometimes used informally to refer to any area of water over which a state has jurisdiction. In a narrower sense, the term is used as a synonym for the territorial sea and that is the definition used in the MSP Challenge.
Territorial sea, as defined by the 1982 United Nations Convention on the Law of the Sea,[2] are the coastal waters extending at most 12 nautical miles (22 km; 14 mi) from the baseline (usually the mean low-water mark) of a coastal state. The territorial sea is regarded as the sovereign territory of the state, although foreign ships (military and civilian) are allowed innocent passage through it, or transit passage for straits; this sovereignty also extends to the airspace over and seabed below. Adjustment of these boundaries is called, in international law, maritime delimitation.
@wikipedia
Within the MSP Challenge Game the territorial waters do not have a special role and are not editable.
Flanders Marine Institute (2016). Maritime Boundaries Geodatabase: Territorial Seas (12NM), version 1. Available online at https://www.marineregions.org/. https://doi.org/10.14284/243
Territorial Seas (12NM)
"Territorial Seas from the VLIZ Maritime Boundaries Geodatabase. Territorial seas are a belt of coastal waters extending at most 12 nautical miles (22.2 km; 13.8 mi) from the baseline (usually the mean low-water mark) of a coastal state." Retrieved from marine regions on 2021-07-06.
2016-10-21
The layer was clipped to the extend of the North Sea, (as defined by IHO, retrieved on 2017-05-22). The geometry errors and duplicates were fixed; and the geometry was simplified to implement the layer in the MSP Challenge.
This layer is a combination of 2 sources:
Flanders Marine Institute (2016). Maritime Boundaries Geodatabase: Territorial Seas (12NM), version 1. Available online at https://www.marineregions.org/. https://doi.org/10.14284/243 HELCOM (2019)
Flanders Marine Institute (2016): Territorial Seas (12NM)
HELCOM (2019): Territorial waters
Flanders Marine Institute (2016): "Territorial Seas from the VLIZ Maritime Boundaries Geodatabase. Territorial seas are a belt of coastal waters extending at most 12 nautical miles (22.2 km; 13.8 mi) from the baseline (usually the mean low-water mark) of a coastal state." Retrieved from marine regions on 2021-07-06.
HELCOM (2019): "Borders of territorial waters (12 nautical miles from baseline) in the Baltic Sea. It is based on a dataset by the European Environment Agency (https://www.eea.europa.eu/data-and-maps/data/maritime-boundaries). The Russian borders and some small segments are based in OpenStreetMap. See the attribute table for details. The Swedish territorial waters file was edited in November 2019. The source was the Swedish Maritime Administration (https://www.sjofartsverket.se/sv/Maritima-Tjanster/Havsgranser/)". Retrieved from HELCOM on 2021-07-06.
Flanders Marine Institute (2016): 2016-10-21 HELCOM (2019): 2017-01-01
The layer from Flanders Marine Institute (2016) was clipped to the extend of the Baltic Sea and Kattegat, (as defined by IHO, retrieved on 2017-05-22). Geometry errors and duplicates were fixed, and the geometry was simplified to implement the layer in the MSP Challenge. The layer was updated later on 2020-11-30 using the new version of HELCOM from November 2019.
Not Applicable, see Local Authority Areas.
Not Applicable, see National Planning Areas.
Co-funded by the European Union.