Commander Liu Zhendong (R) and captain Huang Qiquan study the cruise lines on China's patrol ship "Haijian 50", which patrols in waters near the Diaoyu Islands, March 16, 2012. The patrol by China Marine Surveillance, the country's maritime law enforcement authorities, was carried out by two patrol ships "Haijian 50" and "Haijian 66", which arrived in waters near the Diaoyu Island and its affiliated isles in the early morning of Friday. Authorized by the Chinese State Council, the State Oceanic Administration (SOA), the country's maritime authority, and the Ministry of Civil Affairs released standard names of the Diaoyu Island and its affiliated isles recently.