我国自研，海试成功！

Core Viewpoint - The successful sea trial of China's self-designed and built ultra-large dredging vessel "Tongzhen" marks a significant advancement in the country's maritime capabilities, filling a gap in the market for dredging vessels with a capacity of over 35,000 cubic meters, and providing essential support for national marine development and the Belt and Road Initiative [1][3]. Group 1: Vessel Specifications and Performance - "Tongzhen" is the first ultra-large dredging vessel in China with a capacity of 35,000 cubic meters, boasting a maximum capacity of 38,168 cubic meters, ranking first in Asia and second in the world [3]. - The sea trial lasted five days, during which 30 major and 91 minor tests were conducted, validating the vessel's core performance in navigation, dredging, and intelligent control systems [3][4]. - The vessel demonstrated excellent stability and maneuverability in complex sea conditions, with key indicators meeting or exceeding design standards [3]. Group 2: Technological Advancements - The intelligent performance of "Tongzhen" was verified through the "Intelligent Dredging Control System" and intelligent navigation systems, achieving full-process intelligent control from precise navigation to efficient dredging operations [3]. - The intelligent operation mode covers the entire chain of "dredge - transport - discharge," showcasing an internationally leading level of automation [3]. Group 3: Future Applications - The vessel is expected to be widely applicable in various construction scenarios, including port dredging, land reclamation, coastal maintenance, deep-sea sand extraction, and deep-sea trench excavation and backfilling [3].