Photo taken on Nov. 26, 2015 shows the North Dragon, a North Sea semi-submersible drilling rig delivered by CIMC Raffles to North Sea Rigs AS in Yantai, east China's Shandong Province. North Dragon, which is the first semi-submersible drilling rig ever built by China having the capacity of operating in the Arctic area, is designed to operate in water depths of 500 meters, up to 1,200 meters and drill to depths of 8,000 meters. (Photo: Xinhua/Tang Ke)
