"Marine Geology No. 2" completed its 33rd deep-sea scientific research mission and achieved multiple research results.

It was learned from the China Geological Survey of the Ministry of Natural Resources that the "Marine Geology No. 2" successfully completed the 33rd deep-sea scientific expedition mission, obtaining multiple scientific research achievements. In this expedition, the China Geological Survey, in collaboration with China Ocean University, the Second Institute of Oceanography of the Ministry of Natural Resources, and 16 other units with 100 scientific research personnel, boarded the "Marine Geology No. 2" for a 30-day voyage, conducting a variety of work including the national natural science fund and the standardization of marine trials in the national key research and development program. The researchers used the self-developed "Hai Ma" remote-controlled unmanned submersible to successfully deploy and recover 16 sets of self-developed in-situ observation probes, seabed microseismic arrays, seabed geomagnetic detectors, and other equipment, as well as successfully recovering 25 sets of sedimentation meters and turbidity meters deployed across years. Additionally, a large amount of geophysical data and sediment samples were collected, providing valuable data support for the study of deep-sea geological hazards and resource exploration and development. During this voyage, China's first set of 10,000-meter ultra-clean seawater sampling winch completed the deployment and retrieval of an 11,000-meter coaxial cable, functional testing, and demonstration applications, while also conducting standardization tests of other deep-sea instruments, assisting in the integration of deep-sea equipment technologies from research and development to engineering applications.