|Signed||10 December 1982|
|Location||Montego Bay, Jamaica|
|Effective||16 November 1994|
|Depositary||Secretary-General of the United Nations|
|Languages||Arabic, Chinese, English, French, Russian, and Spanish|
|United Nations Convention on the Law of the Sea at Wikisource|
The United Nations Convention on the Law of the Sea (UNCLOS), also called the Law of the Sea Convention or the Law of the Sea Treaty, is an international agreement that establishes a legal framework for all marine and maritime activities. As of June 2016[update], 167 countries and the European Union are parties.
The convention resulted from the third United Nations Conference on the Law of the Sea (UNCLOS III), which took place between 1973 and 1982. UNCLOS replaced the four treaties of the 1958 Convention on the High Seas. UNCLOS came into force in 1994, a year after Guyana became the 60th nation to ratify the treaty. In 2023, agreement was reached on a High Seas Treaty to be added as an instrument of the convention, to protect ocean life in international waters. This would provide measures including Marine Protected Areas and environmental impact assessments.
UNCLOS replaces the older "freedom of the seas" concept, dating from the 17th century. According to this concept, national rights were limited to a specified belt of water extending from a nation's coastlines, usually 3 nautical miles (5.6 km; 3.5 mi) (three-mile limit), according to the "cannon shot" rule developed by the Dutch jurist Cornelius van Bynkershoek. All waters beyond national boundaries were considered international waters: free to all nations, but belonging to none of them (the mare liberum principle propounded by Hugo Grotius).
In the early 20th century, some nations expressed their desire to extend national claims: to include mineral resources, to protect fish stocks, and to provide the means to enforce pollution controls. (The League of Nations called a 1930 conference at The Hague, but no agreements resulted.) Using the customary international law principle of a nation's right to protect its natural resources, President Harry S. Truman in 1945 extended United States control to all the natural resources of its continental shelf. Other nations were quick to follow suit. Between 1946 and 1950, Chile, Peru, and Ecuador extended their rights to a distance of 200 nautical miles (370 km; 230 mi) to cover their Humboldt Current fishing grounds. Other nations extended their territorial seas to 12 nautical miles (22 km; 14 mi).
By 1967, only 25 nations still used the old three nautical mile limit, while 66 nations had set a 12-nautical-mile (22 km) territorial limit and eight had set a 200-nautical-mile (370 km) limit. As of 15 July 2011[update], only Jordan still uses the 3-mile (4.8 km) limit. That limit is also used in certain Australian islands, an area of Belize, some Japanese straits, certain areas of Papua New Guinea, and a few British Overseas Territories, such as Gibraltar.
UNCLOS does not deal with matters of territorial disputes or to resolve issues of sovereignty, as that field is governed by rules of customary international law on the acquisition and loss of territory.
|Breadth claim||Number of states|
|More than 12-miles||9|
- Convention on the Territorial Sea and Contiguous Zone, entry into force: 10 September 1964
- Convention on the Continental Shelf, entry into force: 10 June 1964
- Convention on the High Seas, entry into force: 30 September 1962
- Convention on Fishing and Conservation of Living Resources of the High Seas, entry into force: 20 March 1966
Although UNCLOS I was considered a success, it left open the important issue of breadth of territorial waters.
In 1960, the United Nations held the second Conference on the Law of the Sea ("UNCLOS II"); however, the six-week Geneva conference did not result in any new agreements. Generally speaking, developing nations and third world countries participated only as clients, allies, or dependents of the United States or the Soviet Union, with no significant voice of their own.
The issue of varying claims of territorial waters was raised in the UN in 1967 by Arvid Pardo of Malta, and in 1973 the Third United Nations Conference on the Law of the Sea convened in New York. In an attempt to reduce the possibility of groups of nation-states dominating the negotiations, the conference used a consensus process rather than majority vote. With more than 160 nations participating, the conference lasted until 1982. The resulting convention came into force on 16 November 1994, one year after the 60th state, Guyana, ratified the treaty.
The convention introduced a number of provisions. The most significant issues covered were setting limits, navigation, archipelagic status and transit regimes,
The convention set the limit of various areas, measured from a carefully defined baseline. (Normally, a sea baseline follows the low-water line, but when the coastline is deeply indented, has fringing islands or is highly unstable, straight baselines may be used.) The areas are as follows:
Internal waters: Covers all water and waterways on the landward side of the baseline. The coastal state is free to set laws, regulate use, and use any resource. Foreign vessels have no right of passage within internal waters. A vessel in the high seas assumes jurisdiction under the internal laws of its flag state.
Exclusive economic zones (EEZs): These extend 200 nmi (370 km; 230 mi) from the baseline. Within this area, the coastal nation has sole exploitation rights over all natural resources. In casual use, the term may include the territorial sea and even the continental shelf. The EEZs were introduced to halt the increasingly heated clashes over fishing rights, although oil was also becoming important. The success of an offshore oil platform in the Gulf of Mexico in 1947 was soon repeated elsewhere in the world, and by 1970 it was technically feasible to operate in waters 4,000 metres (13,000 ft) deep. Foreign nations have the freedom of navigation and overflight, subject to the regulation of the coastal states. Foreign states may also lay submarine pipes and cables.
The area outside these areas is referred to as the "
Aside from its provisions defining ocean boundaries, the convention establishes general obligations for safeguarding the marine environment and protecting freedom of scientific research on the high seas, and also creates an innovative legal regime for controlling mineral resource exploitation in deep seabed areas beyond national jurisdiction, through an
Part XI and the 1994 Agreement
|Contract of carriage/Charterparty|
Part XI of the convention provides for a regime relating to minerals on the seabed outside any state's territorial waters or exclusive economic zones (EEZ). It establishes an International Seabed Authority (ISA) to authorize seabed exploration and mining and collect and distribute the seabed mining royalty.
The United States objected to the provisions of Part XI of the convention on several grounds, arguing that the treaty was unfavorable to American economic and security interests. Due to Part XI, the United States refused to ratify the UNCLOS, although it expressed agreement with the remaining provisions of the convention.
From 1982 to 1990, the United States accepted all but Part XI as customary international law, while attempting to establish an alternative regime for exploitation of the minerals of the deep seabed. An agreement was made with other seabed mining nations and licenses were granted to four international consortia. Concurrently, the Preparatory Commission was established to prepare for the eventual coming into force of the convention-recognized claims by applicants, sponsored by signatories of the convention. Overlaps between the two groups were resolved, but a decline in the demand for minerals from the seabed made the seabed regime significantly less relevant. In addition, the decline of communism in the late 1980s removed much of the support for some of the more contentious Part XI provisions.
In 1990, consultations began between signatories and non-signatories (including the United States) over the possibility of modifying the convention to allow the industrialized countries to join the convention. The resulting 1994 Agreement on Implementation was adopted as a binding international convention. It mandated that key articles, including those on limitation of seabed production and mandatory technology transfer, would not be applied, that the United States, if it became a member, would be guaranteed a seat on the Council of the International Seabed Authority, and finally, that voting would be done in groups, with each group able to block decisions on substantive matters. The 1994 Agreement also established a Finance Committee that would originate the financial decisions of the Authority, to which the largest donors would automatically be members and in which decisions would be made by consensus.
On 1 February 2011, the Seabed Disputes Chamber of the International Tribunal for the Law of the Sea (ITLOS) issued an advisory opinion concerning the legal responsibilities and obligations of states parties to the convention with respect to the sponsorship of activities in the area in accordance with Part XI of the convention and the 1994 agreement. The advisory opinion was issued in response to a formal request made by the International Seabed Authority following two prior applications the authority's Legal and Technical Commission had received from the Republic of Nauru and the Kingdom of Tonga regarding proposed activities (a plan of work to explore for polymetallic nodules) to be undertaken in the area by two state-sponsored contractors – Nauru Ocean Resources Inc. (sponsored by the Republic of Nauru) and Tonga Offshore Mining Ltd. (sponsored by the Kingdom of Tonga). The advisory opinion set forth the international legal responsibilities and obligations of sponsoring states and the authority to ensure that sponsored activities do not harm the marine environment, consistent with the applicable provisions of UNCLOS Part XI, Authority regulations, ITLOS case law, other international environmental treaties, and Principle 15 of the UN Rio Declaration.
Part XII – Protecting the marine environment
Part XII of UNCLOS contains special provisions for the protection of the marine environment, obligating all states to collaborate in this matter, as well as placing special obligations on flag states to ensure that ships under their flags adhere to international environmental regulations, often adopted by the
Biodiversity beyond national jurisdiction
In 2017, the
The convention was opened for signature on 10 December 1982 and entered into force on 16 November 1994 upon deposition of the 60th instrument of ratification. The convention has been ratified by 169 parties, which includes 165 UN member states, 1 UN Observer state (Palestine), two non-member states (the Cook Islands and Niue) and the European Union.
The significance of UNCLOS stems from the fact that it systemizes and codifies the standards and principles of international maritime law, which are based on centuries of maritime experience and are expressed to a great extent in the United Nations Charter and current international maritime law norms, such as the Geneva Conventions of 1958. A large portion of these requirements were further strengthened and expanded.
|International ownership treaties|
- Virginia Commentary
- International Seabed Authority – Intergovernmental body to regulate mineral-related activities on the seabed
- Automatic identification system – Automatic tracking system that uses transceivers on ships
- Admiralty law – Law of the oceans and their use
- Fisheries management – Regulation of fishing
- Freedom of navigation – International maritime legal concept
- International Tribunal for the Law of the Sea – Intergovernmental organization
- Law of the sea – International law concerning maritime environments
- Law of salvage – Principle of maritime law
- Legal assessments of the Gaza flotilla raid – Evaluation of action by Israeli navy
- Maritime Security Regimes – Security portions of customary maritime law
- Montreux Convention Regarding the Regime of the Straits – 1936 agreement on the Turkish Straits
- Operation Sharp Guard – Naval blockade of Adriatic, 1993–96
- Territorial disputes in the South China Sea
- Territorial waters – Coastal waters that are part of a sovereign state's sovereign territory
- United States and the United Nations Convention on the Law of the Sea – American involvement in drafting but non-ratification
- USA/USSR Joint Statement on Uniform Acceptance of Rules of International Law Governing Innocent Passage – 1989 statement of common understanding
- United Nations General Assembly resolution – Decision or declaration by the General Assembly of the United Nations
- Seabed Arms Control Treaty – 1971 international agreement limiting nuclear weapons on the sea floor
- List of territories governed by the United Nations
- Enyew, Endalew Lijalem (2022). "Sailing with TWAIL: A Historical Inquiry into Third World Perspectives on the Law of the Sea". 21(3) Chinese Journal of International Law.
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- "The United Nations Convention on the Law of the Sea (A historical perspective)". United Nations Division for Ocean Affairs and the Law of the Sea. Archived from the original on 15 September 2022. Retrieved 30 April 2009.
- "Chronological lists of ratifications of, accessions and successions to the Convention and the related Agreements". United Nations Division for Ocean Affairs and the Law of the Sea. 8 January 2010. Archived from the original on 14 April 2009. Retrieved 24 February 2010.
- "The Freedom of the Seas (Latin and English version, Magoffin trans.) – Online Library of Liberty". oll.libertyfund.org. Archived from the original on 16 November 2020. Retrieved 27 January 2017.
- "Chapter 1: International Law, Adoption of the Law of the Sea Convention – Law of the Sea". Law of the Sea: A Policy Primer. The Fletcher School of Law and Diplomacy at Tufts University. Archived from the original on 14 April 2021. Retrieved 14 May 2019.
- "Three Mile Limit". www.offshoreradiomuseum.co.uk. Archived from the original on 4 November 2020. Retrieved 30 May 2020.
- "Three mile limit". Archived from the original on 25 February 2021. Retrieved 30 May 2020.
- IILSS (25 April 2021). "Table of claims to maritime jurisdiction (as at 15 July 2011)/maritime spaces of countries". IILSS-International institute for Law of the Sea Studies. Archived from the original on 6 October 2022. Retrieved 21 April 2022.
- "Chagos: A boundary dispute tips over a sovereignty ruling". www.lowyinstitute.org. Archived from the original on 10 October 2021. Retrieved 10 October 2021.
- "Professor Robert Beckman on the Role of UNCLOS in Maritime Disputes". Georgetown Journal of International Affairs. 6 May 2021. Archived from the original on 10 October 2021. Retrieved 10 October 2021.
- "Goal 14 targets". UNDP. Archived from the original on 30 September 2020. Retrieved 24 September 2020.
- "UNCLOS I". Archived from the original on 17 October 2013. Retrieved 16 October 2013.
- "UNCLOS 3 Article 51". United Nations Division for Ocean Affairs and Law of the Sea. Archived from the original on 21 April 2021. Retrieved 29 March 2016.
- "SECTION 4. CONTIGUOUS ZONE, Article 33". UNCLOS PART II – TERRITORIAL SEA AND CONTIGUOUS ZONE. United Nations. Archived from the original on 23 May 2021. Retrieved 19 January 2012.
- "Documents and Publications". International Seabed Authority. Archived from the original on 13 May 2008.
- Jon Copley (7 November 2020). "Deep-sea mining is making the seabed the hottest real estate on Earth". New Scientist. Archived from the original on 28 April 2021. Retrieved 8 November 2020.
- Jennifer Frakes, The Common Heritage of Mankind Principle and the Deep Seabed, Outer Space, and Antarctica: Will Developed and Developing Nations Reach a Compromise? Wisconsin International Law Journal. 2003; 21:409
- This principle was developed in the Convention on Transit Trade of Land-locked States.
- Case No. 17 – Responsibilities and Obligations of States Sponsoring Persons and Entities With Respect to Activities in the Area – Advisory Opinion Archived 27 September 2011 at the Wayback Machine, Seabed Disputes Chamber of the International Tribunal for the Law of the Sea (1 February 2011)
- International Tribunal on the Law of the Sea Finally Renders Advisory Opinion Establishing that the Precautionary Principle is Incorporated Within UNCLOS Law Archived 17 April 2021 at the Wayback Machine, ITSSD Journal on the UN Law of the Sea Convention (22 March 2011)
- Jesper Jarl Fanø (2019). Enforcing International Maritime Legislation on Air Pollution through UNCLOS. Hart Publishing.
- "Governing areas beyond national jurisdiction". IUCN. 29 March 2019. Archived from the original on 18 March 2022. Retrieved 2 June 2022.
- "|". www.un.org. Archived from the original on 23 July 2019. Retrieved 11 July 2022.
- "Summary report 7–18 March 2022". Archived from the original on 11 July 2022. Retrieved 11 July 2022.
- Heffernan, Olive. "Who Owns the Ocean's Genes? Tension on the High Seas". Scientific American. Archived from the original on 24 September 2022. Retrieved 24 September 2022.
- "Ocean treaty: Historic agreement reached after decade of talks". BBC News. 5 March 2023. Archived from the original on 5 March 2023. Retrieved 5 March 2023.
- "UN states agree 'historic' deal to protect high seas". France 24. 5 March 2023. Archived from the original on 5 March 2023. Retrieved 5 March 2023.
- Text of the treaty (pdf)
- List of countries that have ratified Law of the Sea Conventions
- International Tribunal for the Law of the Sea
- Permanent Court of Arbitration – Past and Pending Cases
- Decisions of the World Court Relevant to the UNCLOS (2010) and Contents & Indexes[permanent dead link]
- United Nations Division for Ocean Affairs and the Law of the Sea
- UN Commission on the Limits of the Continental Shelf
- "Technical aspects of the UN Law of the Sea" (PDF). Archived from the original (PDF) on 24 May 2013. Retrieved 12 September 2011. (4.89 MB)
- UNEP Shelf Programme, UN organisation set up to assist States in delineating their continental shelf beyond 200 nautical miles (370 km)
- UNCLOS Italian Database
- EEZ/CS Boundaries Canadian Database
- Digital Map of the World's Exclusive Economic Zones
- SOPAC Maritime Boundaries Database[permanent dead link]
- Introductory note by Tullio Treves, procedural history note and audiovisual material on the 1958 Geneva Conventions on the Law of the Sea in the Historic Archives of the United Nations Audiovisual Library of International Law
- Introductory note by Tullio Treves, procedural history note and audiovisual material on the United Nations Convention on the Law of the Sea in the Historic Archives of the United Nations Audiovisual Library of International Law