Patrol officers raise China's national flag on patrol ship "Haijian 15" at Tuandao Port in Qingdao, east China's Shandong province, Jan. 6, 2011. Two new patrol vessels, namely 1,500-tonnage "Haijian 15" and 1,000-tonnage "Haijian 23", were officially launched by China Marine Surveillance, China's marine supervisory organ, here Thursday.

Patrol ship "Haijian 15" leaves for duty after the launching ceremony at Tuandao Port in Qingdao, east China's Shandong province, Jan. 6, 2011. Two new patrol vessels, namely 1,500-tonnage "Haijian 15" and 1,000-tonnage "Haijian 23", were officially launched by China Marine Surveillance, China's marine supervisory organ, here Thursday.