Question

what is territorial water

Answer 1

Territorial waters or a territorial sea, as defined by the 2013 United Nations Convention on the Law of the Sea, is a belt of coastal waters extending at most 12 nautical miles from the baseline of a coastal state
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Answer 2

Answer:

The term territorial waters is sometimes used informally to refer to any area of water over which a state has jurisdiction, including internal waters, the territorial sea, the contiguous zone, the exclusive economic zone and potentially the continental shelf.