high_sea has definitions from the fields of nautical,geography
1
[ noun ] (nautical,geography) the open seas of the world outside the territorial waters of any nation

Used in print

(Morton A. Kaplan and Nicholas de B. Katzenbach,...)

States were free to enact , within broad though ( perhaps ) determinate limits , their own rules as_to the application of foreign law by their courts , to vary the law_merchant , and to enact legislation with regard_to many claims arising on the high_seas .

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