Mare clausum (legal Latin meaning "closed sea") is a term used in international law to refer to a sea, ocean or other navigable body of water under the jurisdiction of a state that is closed or not accessible to other states. Mare clausum is an exception to mare liberum (Latin for "free sea"), meaning a sea that is open to navigation to ships of all nations.
Mare clausum (legal Latin meaning "closed sea") is a term used in international law to refer to a sea, ocean or other navigable body of water under the jurisdiction of a state that is closed or not accessible to other states. Mare clausum is an exception to mare liberum (Latin for "free sea"), meaning a sea that is open to navigation to ships of all nations.
Source: Wikipedia "Mare clausum" · CC BY-SA 4.0
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