Haijian 49
 Haijian 49 (Chinese: 中国海监 49) is a China Marine Surveillance (CMS) ship in the 4th Marine Surveillance Flotilla of the East China Sea Fleet. On September 11 2012 after Japanese Prime Minister Yoshihiko Noda decided to purchase Diaoyu Islands from its private owner Haijian 46 and Haijian 49 set out to conduct cruise operations in waters around the disputed Diaoyu Islands.