Exclusive Economic Zone (United Nations)

Exclusive Economic Zone (United Nations)
Name	Exclusive Economic Zone (United Nations)
Caption	Map of typical continental shelf and maritime zones under the United Nations Convention on the Law of the Sea
Established	1982 (UNCLOS adoption)
Jurisdiction	Coastal States, United Nations

Exclusive Economic Zone (United Nations) The Exclusive Economic Zone (EEZ) under the United Nations Convention on the Law of the Sea (UNCLOS) establishes a maritime area extending from the coastline baseline to 200 nautical miles where coastal States exercise specific sovereign rights and jurisdiction. The EEZ concept arose from negotiations involving delegations from United States, United Kingdom, Soviet Union, Japan, Brazil, Australia and many other States at the Third United Nations Conference on the Law of the Sea and was codified in UNCLOS adopted in 1982 and opened for signature at the United Nations Conference on Environment and Development era diplomacy.

Definition and Legal Basis

UNCLOS, adopted at the Third United Nations Conference on the Law of the Sea and concluded in 1982, defines the EEZ in Article 56 and related provisions, distinguishing it from the territorial sea and the continental shelf. The EEZ regime is grounded in customary international law recognized by State practice involving France, Spain, Norway, Canada, Mexico, India, China, South Africa, and archipelagic States such as Indonesia and Philippines. Key legal instruments and decisions by the International Court of Justice and the International Tribunal for the Law of the Sea elaborate on baseline methods, median lines, and entitlements, as seen in cases involving Nicaragua, Colombia, Somalia, Peru, and Chile.

Delimitation and Boundary Disputes

Delimitation of EEZs between adjacent or opposite States often invokes principles decided in cases such as North Sea Continental Shelf cases, Maritime Delimitation in the Black Sea (Romania v. Ukraine), and awards by the International Court of Justice and International Tribunal for the Law of the Sea. States commonly apply equidistance or equitable principles; disputes have arisen between Japan and Korea, Argentina and United Kingdom over the Falkland Islands, Gabon and São Tomé and Príncipe, Ecuador and Colombia, and India and Pakistan. Regional organizations such as the European Union, African Union, and Association of Southeast Asian Nations (ASEAN) have supported negotiation frameworks, while bilateral treaties like the 1983 Japan–South Korea Fisheries Agreement or arbitral awards like in the Guyana v. Suriname case offer models for settlement.

Rights and Jurisdiction of Coastal States

Within the EEZ, coastal States hold sovereign rights for the purpose of exploring, exploiting, conserving and managing natural resources, as reflected in UNCLOS Articles 56–62; these rights coexist with other States’ freedoms of navigation and overflight upheld by United States naval practice and judgments involving United Kingdom and Netherlands. Coastal States regulate fisheries via licensing schemes exemplified by agreements with Iceland, Norway, Russia, and multilateral regimes under the Food and Agriculture Organization and the North Atlantic Fisheries Organization. Jurisdiction also covers marine scientific research and artificial installations, with interactions involving International Maritime Organization, Intergovernmental Oceanographic Commission, WTO, and national agencies such as NOAA and Environment and Climate Change Canada.

Obligations and International Cooperation

UNCLOS obliges coastal States to respect navigation rights, protect marine environment, and cooperate on resource management with neighbors; instruments like the Convention on Biological Diversity, Straddling Fish Stocks Agreement, and regional fisheries management organizations frame cooperative regimes. Multilateral diplomacy involving United Nations General Assembly, United Nations Security Council, and treaty bodies has addressed piracy, illegal fishing, and maritime security in areas involving Somalia, Gulf of Aden, Horn of Africa, and the Mediterranean Sea. Technical cooperation is provided by United Nations Development Programme, International Maritime Organization, Secretariat of the Pacific Community, and regional commissions such as the Commission for the Conservation of Antarctic Marine Living Resources.

Natural Resources and Economic Activities

EEZs are principal zones for exploitation of living resources (fish stocks) and non-living resources (hydrocarbons, minerals), attracting companies from States including ExxonMobil, Royal Dutch Shell, Petrobras, Rosneft, BP, TotalEnergies, and state entities like China National Offshore Oil Corporation and PetroChina. Offshore petroleum exploration has led to boundary claims and agreements in basins such as the Gulf of Mexico, North Sea, South China Sea, East China Sea, and Barents Sea. Emerging industries include seabed mining of polymetallic nodules within national parts of continental margins, with regulatory overlap involving the International Seabed Authority where India, Japan, Russia, United Kingdom, and Germany have sponsored exploration.

Environmental Protection and Conservation

EEZ management intersects with environmental treaties and cases, engaging parties to the United Nations Framework Convention on Climate Change, Convention on Biological Diversity, London Convention, and regional accords like the OSPAR Convention and the Cartagena Convention. State obligations to prevent, reduce and control pollution from land-based sources involve national agencies and transboundary litigation seen in disputes brought before the International Tribunal for the Law of the Sea and the International Court of Justice by States such as Australia, New Zealand, Chile, and Peru. Marine protected areas established by Australia and New Zealand within their EEZs exemplify conservation measures encouraged by the Convention on Migratory Species and Ramsar Convention frameworks.

Role of the United Nations and International Tribunals

The United Nations system, through UNCLOS, the International Court of Justice, and the International Tribunal for the Law of the Sea, provides legal frameworks and dispute resolution mechanisms for EEZ issues, used in landmark cases like Nicaragua v. Colombia and delimitation disputes involving Bangladesh, Myanmar, and India. Specialized agencies—International Maritime Organization, Food and Agriculture Organization, and United Nations Environment Programme—support regulation, while regional courts and arbitral tribunals have settled bilateral conflicts, reinforcing norms developed by States such as United States, China, France, Brazil, South Africa, and Indonesia.

Category:United Nations legal instrumentsCategory:Maritime law