On September 7, the 18,500 DWT /chemical tanker (DN517-6) built by Southeast Shipbuilding, a subsidiary of Fujian Shipbuilding, was successfully launched.
This type of ship has an overall length of 149.8 meters, a beam of 22.8 meters, and a depth of 12.7 meters. Its main transportable cargo includes crude oil, petroleum products with a density lower than 1.54 tons per cubic meter, chemicals (Category II and III), liquid chemicals, and goods such as IMO Category II and III petroleum products listed in MARPOL Annex I and the IBC Code. The ship’s main engine and generator sets are equipped with a nitrogen oxide emission control device (SCR), complying with IMO Tier III requirements and the ice class strengthening standard ICE CLASS 1C.
This ship type adopts a multi-load line design to meet the requirements of different flag states and ports. The liquid cargo system design uses a frequency conversion hydraulically driven system with six independent transfer systems, simultaneously driving six cargo pumps and one ballast pump, enabling the simultaneous unloading of six types of liquid cargo. The discharge rate of a single cargo pump is 300 cubic meters per hour, with a maximum discharge rate of 1,800 cubic meters per hour. The propulsion system employs a low-speed two-stroke diesel engine, paired with a controllable pitch propeller and a front-mounted energy-saving guide wheel device, as well as a flap rudder device with a rudder bulb. It is also equipped with a frequency conversion shaft generator set, allowing for operation without generator sets during navigation. This reduces the ship’s energy consumption while improving its maneuverability.
Fujian Shipbuilding has become highly proficient in the construction of this ship type. Through continuous optimization of production organization and efficiency improvement, promotion of technological empowerment and process upgrades, and enhanced efficient collaboration and risk control in the supply chain, the company has systematically summarized the difficulties, improvement points, and solutions encountered during the construction process. This has led to the creation of standardized operating instructions and process documents, which are quickly applied to subsequent ships, truly achieving “faster and better building” and ensuring the high-quality delivery of the remaining ships in the series on schedule.
