Maritime limits and boundaries
The product “Maritime limits and boundaries” (French: “Délimitations maritimes”) gathers all the elements used for the definition of the maritime spaces under the French sovereignty or jurisdiction through the world. Those spaces are defined by the Ordonnance n° 2016-1687 of 8 December 2016 relating to maritime spaces under sovereignty or jurisdiction of the French Republic. This ordonnance is the transcription in the French legislation of the United Nations Convention on the Law of the Sea (UNCLOS) which was signed in Montego Bay (Jamaica) on 10 December 1982 end ratified by France on 11 April 1996. These elements of maritime limits and boundaries come from the limits computed by Shom on the basis of International Law, from the international agreements relating to maritime boundary and the technical conventions ratified between France and other States, from the decisions of international juridical bodies, from the recommendations of the Commission of the Limits of the Continental Shelf (UNO) or from unilateral claims from France in the absence of agreement. The elements are divided into seven themes: 1- Straight baselines 2- Outer limits of the territorial sea (12 nautical miles) 3- Outer limits of the contiguous zone (24 nautical miles) 4- Outer limits of the exclusive economic zone (200 nautical miles) 5- Maritime boundaries established by a bilateral agreement or decided by an international juridical body 6- Maritime boundaries unilaterally claimed by France in the absence of agreement 7- Outer limit of the continental shelf beyond 200 nautical miles December 2022 version
Data and resources
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Portail national des limites maritimesHTML Open
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Access point / WMS Vecteur (avec attributs)WMS Open
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Access point / WMS rasterWMS Open
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HTML Open
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Access point Délimitation maritime avec accordWFS Open
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Access point Lignes de base droitesWFS Open
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Access point Limite d'espace maritime revendiquée par la France en l'absence d'accord de délimitationWFS Open
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Access point Limite extérieure de la mer territoriale (12 milles)WFS Open
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Access point Limite extérieure de la zone contiguë (24 milles)WFS Open
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Access point Limite extérieure de la zone économique exclusive (200 milles)WFS Open
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Access point Limite extérieure du plateau continental au-delà des 200 millesWFS Open
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Portail d'information géographique du ShomHTML Open
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HTML Open
Additional information
| Date (revision) | 2023-01-10 |
|---|---|
| Status | onGoing |
| Update frequency | asNeeded |
| Metadata language | fr |
| License | Utilisation libre sous réserve de citer les sources. Licence Ouverte (version 2.0 d'avril 2017), définie par la mission Etalab. |
| Source metadata | ISO 19115 XML |
| Last updated | 2026-11-04 |
| Created | 2026-11-04 |
| API | package_show |