The United Nations Convention on the Law of the Sea (UNCLOS), adopted by UN member states in 1982, serves as the comprehensive legal framework governing the rights and obligations of States concerning the use of oceans, exclusive economic zones (EEZs), claims to marine resources, and the preservation of the marine environment. UNCLOS comprises 17 parts addressing diverse aspects, including the delineation of maritime boundaries, navigational rights, and the regulation of marine resource exploration.
Under UNCLOS 1982, coastal States are granted sovereign rights to manage natural resources within their maritime jurisdictions, subject to the obligation to ensure ecological sustainability. The Convention further establishes dispute resolution mechanisms through the International Tribunal for the Law of the Sea (ITLOS) or the International Court of Justice (ICJ). Additionally, UNCLOS codifies rules governing marine spatial management, marine scientific research, and marine pollution control. Signatory States are obligated to respect the rights of other States and adhere to the principle of marine ecosystem protection.
The scope of UNCLOS 1982 encompasses all global waters, including territorial seas, EEZs, and the international seabed area. The Convention establishes principles for the regulation of State jurisdiction over maritime zones, including criteria for delimitation.
Maritime Zones Defined Under UNCLOS 1982:
- Internal Waters : Governed under Article 8 of UNCLOS, internal waters (e.g., rivers, bays, and ports) are subject to the full sovereignty of the coastal State. Foreign vessels may not enter these waters without the coastal State’s authorization.
- Territorial Sea : Extending up to 12 miles from the baseline, the territorial sea grants the coastal State full sovereignty over the water column, seabed, airspace, and resources therein. Foreign vessels retain the right of innocent passage, provided such passage does not threaten the coastal State’s security (Articles 2-3).
- Contiguous Zone : Under Article 33, the contiguous zone extends up to 24 miles from the baseline. Within this zone, coastal States may enforce laws relating to customs, immigration, sanitation, and environmental protection. This zone confers limited enforcement jurisdiction, not full sovereignty.
- Exclusive Economic Zone (EEZ) : Within the EEZ (up to 200 miles from the baseline), coastal States hold sovereign rights to explore and exploit living and non-living resources in the waters, seabed, and subsoil. Foreign States retain freedoms of navigation, overflight, and submarine cable/pipeline laying (Articles 55-58).
- Continental Shelf : Defined under Article 76, the continental shelf extends at least 200 nautical miles and up to 350 miles based on geological criteria. Coastal States possess exclusive rights to exploit non-living resources (e.g., oil, gas, minerals) in the seabed and subsoil.
- High Seas : Beyond national jurisdiction, the high seas (regulated under Articles 86-90) are open to all States, guaranteeing freedoms of navigation, overflight, fishing (subject to regulations), scientific research, and submarine infrastructure. The principle of the “common heritage of mankind” applies, prohibiting sovereign claims.
- The Area : The seabed and ocean floor beyond national jurisdiction, designated as “the Area”, constitute the common heritage of mankind. Exploitation requires authorization from the International Seabed Authority (ISA) and is prohibited without its consent.
- Archipelagic Waters : Applicable exclusively to archipelagic States (e.g., Indonesia, Phillippines), archipelagic waters grant full sovereignty to the coastal State. Foreign vessels retain the right of archipelagic sea lanes passage (Articles 52-53).
The United Nations Convention on the Law of the Sea (UNCLOS), adopted by UN member states in 1982, serves as the comprehensive legal framework governing the rights and obligations of States concerning the use of oceans, exclusive economic zones (EEZs), claims to marine resources, and the preservation of the marine environment. UNCLOS comprises 17 parts addressing diverse aspects, including the delineation of maritime boundaries, navigational rights, and the regulation of marine resource exploration.
