Mare clausum (legal Latin meaning "closed sea") is a term used in international law to mention a sea, ocean or other navigable body of water under the jurisdiction of a state that is closed or not accessible to other states. ...

What does the term Mare Clausum mean?

: a navigable body of water (such as a sea) that is under the jurisdiction of one nation and is closed to other nations.

Who wrote Mare Clausum?

His argument was answered in 1631 by an English jurist, John Selden (1584–1654), who wrote Mare Clausum, which upheld the doctrine of that waters contiguous to the coastline of a country should be solely under the dominion of that country.