China's first 3,000-meter-deep engineering ship put into operation(1/2)

Photo taken on November 9, 2014 shows a trial operation of China's first multifunctional offshore engineering ship, "Offshore Oil 286". [Photo: Xinhua]

China's first multifunctional offshore engineering ship that can operate 3,000 meters under the water was put into operation on Sunday, a major progress of China to proceed into the deepwater.