Definition

Noun: - A closed sea: A body of water, such as a sea or ocean, that is under the exclusive jurisdiction and control of a single nation or state, and is therefore not freely open to the navigation or use of other nations.

Usage

The term is used in the context of international law and maritime history to describe a legal doctrine or a specific body of water claimed by a sovereign power. - In the 17th century, some nations advocated for the concept of mare clausum, asserting control over vast ocean territories. - The debate between mare clausum and mare liberum (free sea) was central to the development of modern maritime law.

Advanced Usage

• As a legal principle: The doctrine of contrasts with the principle of (freedom of the seas). It represents the assertion of national sovereignty over maritime zones.
  • The country's claim of mare clausum over the adjacent sea was challenged by its neighbors.

Variants and Related Words

• Mare liberum (n): The principle or status of a sea being open to all nations for navigation and trade.
• Territorial waters (n): The modern legal concept of a belt of coastal waters under a state's sovereignty, which is a contemporary application related to the historical idea of a .

Synonyms

• Closed sea
• National sea (in a historical/legal context)
• Sovereign maritime domain

Related Phrases

• Claim of sovereignty: The act of asserting exclusive control, which is the basis for declaring a .
• Exclusive economic zone (EEZ): A modern maritime zone where a state has special rights, conceptually descended from debates over open and closed seas.

Noun

1. (closed sea) a navigable body of water under the jurisdiction of a single nation