Marine ships start patrol mission in S China Sea

Marine patrol ship Haixun 31 sails out of the port of Sanya, South China's Hainan Province, Feb 28, 2013. A formation of three marine patrol ships Haixun 21, Haixun 31 and Haixun 166 started their coast guard mission in South China Sea on Thursday, a second one by the national Maritime Safety Administration at this water area in 2013. The first mission was conducted from Jan. 15, 2013 to Jan 17, 2013.[Photo/Xinhua]