Shekou Yiulian got a great achievement on the repair of the semi-submersible drilling rig "NAN HAI NO.2" from China Oilfield Services Limited(COSL). The main job includes: 40,000m electric cables renewal; diesel generator system & emergency generator system renewal; 41,000M² of special coating; 22,800M² of external blasting & painting; more than 300 steel work; accommodation conversion. The entire project satisfied the owner and class societies, DNV & CCS. Shekou Yiulian used to undertake the task of repairing "NAN HAI NO.5" for COSL successfully. These two successful repairs show Shekou Yiulian is powerful on the offshore drilling rig repair.