CNOOC’s Greenergy Sea LNG Carrier Named and Delivered

According to China National Offshore Oil Corporation, the Greenergy Sea, the second vessel in phase two of its long‑term FOB‑linked LNG carrier programme, has been named and handed over at Changxing Island in Shanghai. The project forms China’s largest single LNG carrier construction scheme. Eight out of the planned twelve vessels have now been completed, marking a two‑third delivery rate.

The Greenergy Sea belongs to the domestically developed fifth‑generation Changheng series. It measures 299 metres in length and 46.4 metres in breadth, with a design cargo capacity of 174,000 cubic metres of liquefied natural gas. The cargo carried on one voyage can supply gas for 7 million households across one month.

The vessel is fitted with the latest cargo containment system, achieving a natural boil‑off rate as low as 0.085 per cent. An onboard LNG reliquefaction plant further cuts vapour losses from the cargo tanks. Its dual‑fuel main engine incorporates an intelligent exhaust gas recirculation unit and water treatment equipment, satisfying IMO Tier III nitrogen oxide emission limits whether running on fuel oil or gas. The design delivers lower overall energy consumption, wider tank compatibility, improved cargo carrying capacity and greater operational flexibility on international routes than the preceding vessel class.

The full programme comprises twelve 174,000‑cubic‑metre LNG carriers, split evenly between phase one and phase two. The completed Greenergy‑series vessels already serve more than 50 receiving terminals across five continents. Work proceeds steadily on the four remaining hulls. The third vessel of phase two has passed its second dry‑docking inspection and outer hull painting, with final delivery preparations underway. The fourth vessel is being readied for sea trials. The cargo tank of the fifth vessel has been finished, and equipment testing is in progress. Installation, testing and membrane tightness checks are ongoing for the sixth vessel of the phase. All twelve ships are scheduled for handover by the end of 2027.