On June 21, 2022, MIN SHENG HAO, the first modified LNG Dual-fuel commercial ro-ro vehicle carrier on the Yangtze River, was delivered after a survey. The ship is owned by Minsheng Shipping Co., Ltd., and its plan approval and modification survey were implemented by China Classification Society (CCS).
MIN SHENG HAO has a total length 110.00 m, molded breadth 17.80 m, molded depth 4.80 m, full-load draft 3.12 m, gross tonnage 8,932 t, and the maximum vehicle-carrying capacity 916 cars. Equipped with two LNG dual-fuel engines, the carrier has a total rated power 882 kW. For the modification of this ship, the closed circulating water heating LNG supply system, one of the new technologies for the LNG dual-fuel power system, was used for the first time.
During the modification, the shipowner and shipyard encountered many difficulties in LNG equipment installation and commissions. Especially, there was a technical difficulty that the system would switch to the mode of fuel oil burning due to the insufficient LNG gasification heat in the gas supply. CCS Chongqing Branch leveraged its years’ technical superiority, its plan approval department, product department and site survey cooperated as a whole, and responded to customers’ demands actively.
During the installation and commission, the marine surveyors and LNG product experts of CCS Chongqing Branch visited the shipyard for communication and guidance, and, with their help, the shipowner and shipyard managed to overcome the technical difficulties of the excessively low gas supply volume and temperature during the LNG supply. Meanwhile, they provided valuable field experience in the application of the closed circulating water heating technology in LNG dual-fuel power modification, laying solid foundation for the safe delivery of the ship and winning high recognition from the shipowner and the shipyard.
The smooth delivery of MIN SHENG HAO represented another successful case that CCS plays its leading and demonstration role in the field of LNG dual-fuel vessel technologies. Adhering to the principle of “safety, environmental protection, and creating value for customers and society”, CCS keeps enhancing and solidifying the new LNG fuel technologies, provides customers with quality service about the LNG power technology in the plan approval, products and ship survey, makes full use of its role as the “main force” and “national team” in the marine survey, and unswervingly advances the efficient utilization of clean energy, so as to fulfill its responsibility and commitment for guarding “green hills and clear waters”.
