1Study on the Method for High-Precision Free Surface Identification in MPS MethodWANG Li-zhu, JIANG Qin, ZHANG Chang-kuan165-1752Numerical Simulation of Coastal Dynamic Evolution of the Sanya BayYAN Zhen-zhen, DU Xiao-ping, FAN Xiang-tao176-1863Study on Hydrodynamic Characteristics of Floating Box-Type Wave-Dissipating FacilitiesYU Ding-yong, XIE Yu-jia, HUANG Dong-yan, ZHAO Jian-hao187-1934Study on the Operation Mode of "One River, Three Distributaries" in the Yellow River EstuaryCHEN Xiong-bo, QIU Wei-guo, LIU Juan194-2025Research on 3D Visualization of Multi-Beam Seabed TerrainWANG Nan, XU Yong-chen, TAO Chang-fei203-2096Analysis on the Sea Level Changes in the Caofeidian Coastal Area of Hebei ProvinceDONG Mei-ling, SHAO Jie, FENG Jun-ling, YU Dao-yong, WU Hai210-2167Improvements of Potential Flow Model for Submarine Pipeline ScourWANG Jun-qin, XIA Hua-yong217-2238Numerical Simulation of Tide-Induced Residual Current in the Bohai BayLIU Xin-cang, LIU Yan-ling, CHI Wan-qing, LU Zhi-yong, HUANG Bing-zhi224-2319Research on Detection Technology of Subsea Well MouthYANG Xiao-di, YAO Zhi-guang, CHUN Ming-hao, LUO Xiao-qiao232-23910Preliminary Application of UAV Low-Altitude Remote Sensing System in Maritime Surveillance and MonitoringJIANG Wan-jun, YIN Zhong-hui, TAO Jin-bo, MA Hai-jing, LIU Ai-dong240-246