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Comment Re:International waters (Score 4, Informative) 800

First of all, the 3-nmi line serves only as the boundary between state- and federally-controlled waters. The end of federal jurisdiction and the beginning of International waters actually occurs at the line 12 nautical miles from shore.

The official 3- and 12-nmi lines are demarcated on the highest-resolution NOAA charts for a particular area. These charts can be hard to find on-line, though it is possible to find certain areas though various state GIS websites and such. I also think the NOAA is systematically making vector data of the lines available.

In the case of Catalina Island, it has it's own 12-nmi belt of territorial sea, but the space between it and the mainland (so long as it is at least 12 nmi from either shore) is International waters.

There is a belt extending 24-nmi from shore called the "Contiguous Zone", in which a nation may exercize authority mainly to enforce environment and customs regulations. This area is still considered Internation waters, however.

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