GB/T 44042-2024 "Measuring method of underwater radiated noise from ships" specifies the equipment, measurement requirements, measurement process and data processing method for underwater radiated noise measurement of ships in marine or lake environments. This standard is applicable to surface ships of all types of navigation conditions, including manned and unmanned ships, and Miscellaneous underwater navigation bodies Underwater radiated noise measurement. Covering measurement needs from deep water to shallow water environments, ensuring accuracy and comparability of measurement results. The standard refers to a number of domestic and foreign acoustic and navigational standards, such as GB/T 3947-1996 Acoustic terminology and ISO 17208-2:2019 Acoustics Description of the amount of ship underwater noise and its Measuring method Part 2, which provides specifications and guidance for ship noise environment assessment and monitoring.