On August 15, 2011 at 22:57 UTC (August 16, 2011 at 06:57 Beijing Time) the "Chang Zheng-4B” (Long March-4B) rocket-carrier was launched from the Taiyuan Satellite Launch Center in Shanxi Province in north China.
The rocket orbited the "Haiyang-2” maritime satellite. The satellite is for the supervision and survey of the maritime environment, an important measure for prevention and reduction of maritime disasters.