The determination of outstanding maritime boundaries is one of the most strategic challenges for concerned States, and has wide-ranging geopolitical, economic and environmental implications. Settlement of disputes over maritime zones involves the application of complex rules of public international law, such as those of the 1982 United Nations Convention on the Law of the Sea (UNCLOS). Conflicting claims of sovereignty over natural resources of the sea, the seabed and subsoil are increasingly are increasingly driving recourse to judicial or arbitral settlement of maritime disputes, as well as the emergence of new concepts of joint development and management of maritime zones and their resources.

The Public International Law Advisory Group assists States in the process of delimitation of their maritime boundaries. It also advises private companies on the challenges and risks related to their activities in undelimited maritime areas.

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Our Experts

David M. Ong

Pierre-Emmanuel Dupont


Contested sovereignty over territorial zones and the delimitation of maritime boundaries

Contribution to International Maritime Boundaries

The South China Sea moves to the Indian Ocean: Conflicting Claims Over the Tromelin Islet and its Maritime Entitlements

Maritime claims of Western Sahara