China's territorial waters 12 nautical miles wide!
Taking the straight line connecting the base point of the mainland coast and the islands at the outer edge of the coastal coast as the baseline, the waters extending outward from the baseline 12 nautical mile are China's territorial waters.
How to determine the baseline of territorial sea?
The baseline of territorial sea refers to "the coastal low tide line marked by large-scale charts officially recognized by coastal countries."
Low tide line: the dividing line between the sea surface and the land when the sea surface falls to low tide.
We generally have three methods to determine the territorial sea baseline of coastal countries:
Normal baseline method;
Linear baseline method;
Mixed baseline method.
Straight baseline method
When the coastline is extremely tortuous, or there are a series of islands in the coastal waters, select some appropriate points on the coastline or islands and connect them to form a straight baseline.
Because the coastline of our country is tortuous and there are many islands, the straight baseline method is used to determine the territorial sea baseline.
The baseline of Xisha Islands territorial sea is a straight line baseline method.