Advanced Survey Techniques for Port Infrastructure Assessment: A Collision Investigation Case Study

This paper presents a case study demonstrating the effective integration of advanced technologies for a comprehensive current conditions survey following a collision accident at the Interflour port's waterfront jetty in Phu My town, Ba Ria, Vung Tau province, Vietnam. To reconstruct the accident and assess the port's future operability, a combination of 3D laser scanning, unmanned aerial vehicle (UAV) aerial photography, bathymetric surveying by unmanned surface vehicles (USVs), and side-scan sonar for marine obstacle detection were conducted. 3D laser scanning provided high-precision data (up to 1.0 mm accuracy) for modeling and simulations of above-water structures. UAVs enabled detailed inspection of the vast jetty area. USVs generated accurate bathymetric maps, while side-scan sonar detected underwater obstacles. Data from all sources was integrated into a Geographic Information System (GIS) platform for streamlined management and analysis. The paper aims to highlight the value of technological solutions in accident investigations. Integrating these methods facilitates highly accurate data collection and visualization, even in challenging environments. The results have implications for improving survey accuracy and efficiency, supporting the assessment and restoration of critical infrastructure following accidents.