Q:Given the following passage  "The BeiDou-2 system began offering services for the Asia-Pacific region in December 2012. At this time, the system could provide positioning data between longitude 55°E to 180°E and from latitude 55°S to 55°N.",  answer the following question. Note that the answer is present within the text.  Question: What covers the South China Sea
A:
BeiDou-2