ExplorationSemisub assigned for Empyrean’s South China Sea campaignCOSL expected to use Nanhai 9 on Jade prospect in Pearl River Mouth basinChartered: COSL-owned semisub Nanhai 9 (right) is assigned for Empyrean's South China Sea campaign at the end of this yearPhoto: VLADIMIR PETKEVICH/CITY51/VK.COMXu YiheSingapore