Acoustic Cameras Measurements of Moving Cargo Ships in the Port of Livorno

Commercial ports, characterized by intense human activity, are susceptible to elevated noise levels, with ships being significant contributors to the complex acoustic environment. During ship manoeuvres, specific port zones are directly exposed to noise, potentially impacting both workers and nearby residential areas. The CLASTER project, a European research initiative, is dedicated to enhancing the sustainability of commercial ports by contributing to the reduction of acoustic pollution in the Maritime cooperation space. This study, conducted within the CLASTER project context (RUMBLE dataset), presents a case study of Livorno City's port in Italy, employing an innovative approach utilizing Acoustic Camera technology. The implementation of this measurement technique proves beneficial in characterizing and monitoring port noise, especially considering challenges posed by the large dimensions of ships, the sparse location of various noise sources on ships, and the dynamic movement of those sources during ship manoeuvres. We identify and analyse diverse noise sources during the pass-by of various cargo ships, including auxiliary propulsion systems, ventilation, and exhaust. Given the global significance of ports in commerce and the proximity of residential areas in some Mediterranean cities to port zones, understanding and mitigating these noise sources assumes critical importance.