On July 4th at 9:00 AM, accompanied by a loud whistle, the H1798A ship built by Hudong-Zhonghua for Qatar Energy successfully completed its “two-in-one” sea trial mission and safely returned to dock.
This vessel is the second LNG carrier primarily constructed by the General Assembly Division III. Building on the experience of the previous ship, the team strengthened collaboration with multiple departments, including General Assembly Division II/Containment System Department, LNG Technology Research Institute, LNG Industry Chain Cryogenic Laboratory, Supply Chain Management Department, and Quality Assurance Department. Through close coordination, they identified process improvement points to advance lean management. The cooling test and natural gas loading at the dock were completed in five days—one day ahead of schedule—laying a solid foundation for the smooth sea trial.
During the trial, the project team actively leveraged the temporary Party branch’s role as a stronghold. Led by the branch secretary, they adjusted the test plan based on actual conditions, efficiently arranged test items, and ensured key test positions were led by Party members. Through round-the-clock efforts and seamless teamwork, critical tests such as endurance trials, unmanned engine room operations, and speed measurements were completed in a single attempt. All trial items were finished in six days, with key performance indicators and equipment operations meeting technical requirements and standards. The efficient trial earned high praise from the shipowner and inspection team. Additionally, the liquid cargo tank inert gas project, originally scheduled for post-trial submission, was fully completed during the sea trial, ensuring the tanks were ready for opening before docking.
Even after returning to the shipyard, the project team remained fully engaged in finalizing tasks such as issue resolution and documentation.
It is reported that this vessel is the fifth-generation “Changheng Series” 174,000 cubic meter LNG carrier independently developed and designed by Hudong-Zhonghua. It integrates the latest design concepts, cutting-edge technical equipment, superior environmental performance, and forward-thinking innovations, embodying the essence of the company’s LNG carrier designs over the years. The ship measures 299.00 meters in length, 46.40 meters in width, 26.25 meters in depth, and has a design draft of 11.50 meters. It features an efficient low-speed dual-fuel diesel direct propulsion system and is equipped with the GTT NO.96 membrane-type cargo containment system.
Custom-built to the technical standards of Qatar Energy’s existing global fleet—the largest LNG fleet in operation—this vessel adopts the latest twin-skeg hull design and incorporates multiple low-carbon and digital technologies. Its advantages include excellent speed performance with reduced emissions, high technological sophistication and global adaptability, lightweight construction with strong cargo capacity, and flexible gas-oil balance for enhanced route compatibility.
