Yan Bing, Deputy Chief Engineer of Shanghai Zhenhua Heavy Industries Group, explained that the two dredgers, known as "all-around champions" in the dredging industry, possess four key features: strong groundbreaking power, deep dredging, long haul, and long blowing distance. They can operate normally in force 8 winds and waves, and their unlimited navigation area makes them suitable for global projects. They will be widely used in port dredging, deep-sea sand extraction, land reclamation, and deep-sea mining. They not only demonstrate the technological strength of China's dredging industry, but also fill several gaps in the country's ultra-large dredging equipment sector.

The "Tongjun" and "Junguang" vessels built by Zhenhua Heavy Industries this time, with their maximum dredging depth of 120 meters (equivalent to seabed operations at a height of 40 stories) and Asia's largest mud tank capacity of 35,000 cubic meters (the amount of fill pumped into one vessel can raise a standard football field by 5 meters), have broken the monopoly of European companies in high-end large-scale dredging projects.

At the same time, the intelligent dredging system carried by the ship realizes "one-button control" of the entire chain of "digging-transporting-blowing". One crew member can complete all navigation and construction tasks, and the mud tank can be filled within 90 minutes, with the world's leading loading efficiency.

As the builder of two ultra-large trailing suction hopper dredgers (UHDs), Zhenhua Heavy Industries (ZPMC), not only established itself as the world's largest port machinery manufacturer, provider of automated terminal system solutions, and transporter of port machinery, has successfully transformed China's dredging equipment industry from a laggard to a leader. The construction process presented an unprecedented challenge, requiring the modular construction of 284 sections, each weighing over 100 tons on average. To achieve this, ZPMC deployed two independent production lines, assembled two specialized shipbuilding teams, and planned a "two-ship parallel" construction plan. The 284 sections were pre-classified by specialty, assembled into several sections for installation within three months, ultimately reducing the main hull construction cycle for both vessels by three months, achieving an accuracy of within plus or minus 4 millimeters. Wen Keyi, project manager for the Junguang, explained that the project significantly shortened the typical 24-month construction cycle for large, specialized vessels, taking only 14 months from steel plate cutting to completion. The team overcame challenges such as supply chain disruptions and employed innovative working methods to ensure timely completion of key project milestones.

It is reported that the successful launching of the "Tongjun" and "Junguang" vessels is the result of Zhenhua Heavy Industries' 20 years of deep cultivation in marine engineering, and it is also a new milestone in China's independent research and development and industrialization of dredging equipment.