territorial waters, Waters under the sovereign jurisdiction of a nation or state, including both marginal sea and inland waters. The concept originated in the 17th-century controversy over the status of the sea. Though the doctrine that the sea must be free to all was upheld, a nation’s jurisdiction over its coastal waters was also recognized. Nations subscribing to the Law of the Sea observe a territorial limit of 12 nautical mi (22 km) from shore. Territorial rights include the airspace above those waters and the seabed below them. See also high seas.
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Law of the Sea Summary
Law of the Sea, branch of international law concerned with public order at sea. Much of this law is codified in the United Nations Convention on the Law of the Sea, signed Dec. 10, 1982. The convention, described as a “constitution for the oceans,” represents an attempt to codify international law