BalticSea:Territorial Waters

General Information

Additional Information

Visuals

Metadata

Territorial Waters

Layer Info
Category	Management
Subcategory	Governance
Editable	No
Data Type	Lines
Types or Values
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Description

MSP Challenge

Here you can add information about how the layer is implemented or used in the MSP Challenge

IN THIS TAB EXTENDED CONTENT IS PLACED

ON THIS TAB VISUAL CONTENT IS PLACED

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 (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/).

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 https://www.marineregions.org/ . https://doi.org/10.14284/243
• HELCOM (2019).Territorial waters. Available online at http://maps.helcom.fi/website/mapservice/. Retrieved on 2021-06-01.

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 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.