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===Description=== | ===Description=== | ||
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=Metadata= | =Metadata= | ||
===Data Source=== | ===Data Source=== | ||
This layer is a combination of 2 sources: Flanders Marine Institute (2016) and HELCOM (2019). | |||
=== | ===Original Title=== | ||
Flanders Marine Institute (2016): "Maritime Boundaries Geodatabase: Territorial Seas (12NM)". | |||
HELCOM: Territorial waters | |||
===Description=== | |||
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. | |||
The HELCOM layer contains borders of territorial waters (12 nautical miles from baseline) in the Baltic Sea. It is based on a dataset by the European Environment Agency (<nowiki>https://www.eea.europa.eu/data-and</nowiki>�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/). | |||
===Creation Date=== | |||
Not specified, however a reference from the sources is given below. | |||
* Flanders Marine Institute (2016). Maritime Boundaries Geodatabase: Territorial Seas (12NM), version 1. Available online at <nowiki>https://www.marineregions.org/</nowiki> . <nowiki>https://doi.org/10.14284/243</nowiki> | |||
* HELCOM (2019).Territorial waters. Available online at <nowiki>http://maps.helcom.fi/website/mapservice/</nowiki>. Retrieved on 01/06/2021 | |||
===Methodology=== | ===Methodology=== | ||
The layer from Flanders Marine Institute (2016) was clipped to the extend of the Baltic Sea and Kattegat, (as defined by IHO, retrieved on 22/05/2017). 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 30/11/2020 using the new version of HELCOM from November 2019. | |||
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Revision as of 14:51, 5 July 2021
This page was last edited on 5 July 2021, at 14:51. Content is available under GPLv3 unless otherwise noted.