Users have inquired about the accuracy of the boundary representations.

All EEZ boundaries are calculated to at least six decimal digits of a degree. That is equivalent to 4.4 inches (or 11.2 centimeters) at the equator, which is much greater than other Google Earth border accuracy.

Where bilateral or multilateral treaties were ratified, the accuracy is often greater. For example, consider the maritime boundary between Singapore and Malaysia, in yellow as it appears in Google Earth (shown under the "fair use" copyright provisions when used for critical purposes). Compare that with the boundary shown in green as it is provided in the EEZ files.



The 72 points in the EEZ boundary were taken from the bilateral treaty W1 - W25 and E1 - E47.



Through a programmatic process, they were individually calculated to at least six decimal digits of a degree.



Treaty data source: R. Haller-Trost, The Contested Maritime and Territorial Boundaries of Malaysia:An International Law Perspective, from the International Boundary Studies Series, Springer, 1998, p. 491.