Southeast Shipbuilding Launches 18,500-Ton Oil and Chemical Carrier

On October 20, the 18,500-DWT oil and chemical tanker (DN517-7), built by Southeast Shipbuilding under Fujian Mawei, was successfully launched.

This vessel has a total length of 149.8 meters, a molded breadth of 22.8 meters, and a molded depth of 12.7 meters. It is designed to transport primarily crude oil, petroleum products with a density below 1.54 tons per cubic meter, as well as Class II and Class III chemicals, liquid chemicals—including cargo covered under MARPOL Annex I and IMO Class II and III petroleum products specified in the IBC Code. The ship’s main engine and generator sets are equipped with a nitrogen oxide emission control system (SCR), meeting the stringent IMO Tier III standards, and it also complies with the ICE CLASS 1C requirement for enhanced ice-going capabilities.

This vessel features a multi-load-line design, meeting the requirements of various flag states and port authorities. The liquid cargo system is equipped with six independent transmission systems driven by variable-frequency hydraulic motors, simultaneously powering six cargo pumps and one ballast pump. This setup enables the ship to unload cargo from all six systems concurrently. Each individual cargo pump can deliver at a rate of 300 cubic meters per hour, with a maximum combined discharge capacity of up to 1,800 cubic meters per hour. The propulsion system relies on a low-speed two-stroke diesel engine, paired with an adjustable-pitch propeller and a front-mounted energy-saving guide wheel assembly, as well as a flapped rudder equipped with a bulbous bow. Additionally, the vessel is fitted with a variable-frequency shaft-driven generator set, allowing it to operate without the generator during navigation. This innovative configuration not only reduces the ship's overall energy consumption but also significantly enhances its maneuverability and operational efficiency.

This series of oil chemical vessels has seen the successful, consecutive construction of multiple units, marking Southeast Shipbuilding's establishment of a mature, standardized, and serialized construction model for this vessel type. Throughout the continuous building process, the company has consistently refined key operational procedures—such as modular fabrication, dock assembly, and launching & commissioning—while drawing on insights gained from earlier projects to continuously improve its construction plans. This approach not only enhances both the quality and efficiency of shipbuilding but also ensures smooth delivery of subsequent vessels, providing a solid foundation for securing additional orders of similar ships in the future.

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