how many miles out is considered international waters
12 nautical miles
title: Airspace text: waters as being 12 nautical miles (22.2 km) out from a nation's coastline. Airspace not within any country's territorial limit is considered international, analogous to the "high seas" in maritime law. However, a country may, by international agreement, assume responsibility for controlling parts of international airspace, such as those over the oceans. For instance, the United States provides air traffic control services over a large part of the Pacific Ocean, even though the airspace is international. There is no international agreement on the vertical extent of sovereign airspace, with suggestions ranging from about —the extent of the highest aircraft and title: Sea text: by the International Maritime Organization. Its objectives include developing and maintaining a regulatory framework for shipping, maritime safety, environmental concerns, legal matters, technical co-operation and maritime security. UNCLOS defines various areas of water. "Internal waters" are on the landward side of a baseline and foreign vessels have no right of passage in these. "Territorial waters" extend to 12 nautical miles (22 kilometres; 14 miles) from the coastline and in these waters, the coastal state is free to set laws, regulate use and exploit any resource. A "contiguous zone" extending a further 12 nautical miles allows for hot pursuit of vessels title: United Nations Convention on the Law of the Sea text: Maritime Organization, the International Whaling Commission, and the International Seabed Authority (ISA). (The ISA was established by the UN Convention.) UNCLOS replaces the older 'freedom of the seas' concept, dating from the 17th century: national rights were limited to a specified belt of water extending from a nation's coastlines, usually (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 promulgated by Hugo Grotius). In the early 20th century, some nations title: International waters text: International waters The terms international waters or trans-boundary waters apply where any of the following types of bodies of water (or their drainage basins) transcend international boundaries: oceans, large marine ecosystems, enclosed or semi-enclosed regional seas and estuaries, rivers, lakes, groundwater systems (aquifers), and wetlands. International waters have no sovereignty, ergo is "Terra nullius" as no state controls it. All states have the freedom of: fishing, navigation, overflight, laying cables and pipelines, as well as research. Oceans, seas, and waters outside national jurisdiction are also referred to as the high seas or, in Latin, "mare liberum" (meaning "free sea"). The title: Three-mile limit text: which developed into a limit of . (It has also been suggested that the three-mile limit derived, at least in some cases, from the general application of the league (a common unit of measurement at sea) rather than from the range of cannon.) Since the mid-20th century, numerous nations have claimed territorial waters well beyond the traditional three-mile limit. Commonly these maritime territories extend from a coastline, and this was eventually established as the international norm by the 1982 United Nations Convention on the Law of the Sea. As a result, the three-mile limit has become largely obsolete. , only