On July 15, the 18,500 DWT oil/chemical tanker (MW516-1), built by Fujian Shipbuilding Group’s subsidiary Mawei Shipbuilding, successfully completed its five-day, four-night sea trial and returned to port.
The vessel has an overall length of 149.8 meters, a beam of 22.8 meters, and a depth of 12.7 meters. It is designed with provisions for future conversion to methanol dual-fuel capability. Its primary cargo includes crude oil, petroleum products with a density below 1.54 tons per cubic meter, chemicals (Class II and III), liquid chemicals, and IMO Class II and III petroleum products listed in MARPOL Annex I and the IBC Code. The vessel’s main engine and generator sets are equipped with nitrogen oxide emission control (SCR) systems, complying with IMO Tier III standards and ice-class reinforcement requirements (ICE CLASS 1C).
The ship features a multi-load line design to meet the requirements of different flag states and ports. Its liquid cargo system employs a variable-frequency hydraulic drive with six independent transfer systems, capable of simultaneously operating six cargo pumps and one ballast pump. This allows for the concurrent unloading of six liquid cargoes, with a single cargo pump discharge rate of 300 cubic meters per hour and a maximum discharge rate of 1,800 cubic meters per hour. The propulsion system utilizes a low-speed two-stroke diesel engine paired with an adjustable-pitch propeller, an energy-saving pre-swirl stator, and a flap rudder with a rudder bulb. Additionally, the vessel is equipped with a variable-frequency shaft generator, enabling operation without auxiliary generators during navigation, thereby reducing energy consumption while enhancing maneuverability.
Before the sea trial, the project team meticulously planned the trial schedule, optimized the test sequence, and coordinated equipment debugging and personnel arrangements. During the trial, the team strengthened communication and coordination with the shipowner and classification society, successfully completing a series of tests, including the main engine, steering gear, side thruster, and vessel performance evaluations. The ship’s overall technical performance, system operation, and construction quality fully met the contractual technical requirements. Currently, the project team is closely focusing on key milestones, rigorously advancing follow-up work plans, and collaborating with all stakeholders to ensure the vessel is delivered on time with high quality and efficiency.
