本标准描述了用于测试的测量系统、程序和方法 给定操作条件下船舶水下声压级的波束方位测量 条件产生的量以三分之一倍频程的标称源电平值报告 乐队。它不要求使用特定的海洋位置，但要求进行海洋测试 提供了一个网站。水下声压级测量是在远场进行的 然后校正至1 m的参考距离。本标准适用于任何和所有表面 有人或无人驾驶的船只。本标准不适用于水下船舶或 飞机描述了用于测量水下声压级的测量系统 以及水下传感器和目标船舶之间的距离或范围。 对数据的处理和报告进行了描述，并提供了信息指导。这 本标准未规定或提供水下噪声标准指南。

This standard describes the measurement systems, procedures, and methodologies used for the beam aspect measurement of underwater sound pressure levels from ships for a given operating condition. The resulting quantities are reported as nominal source level values in one-third octave bands. It does not require the use of a specific ocean location, but the requirements for an ocean test site are provided. The underwater sound pressure level measurements are performed in the far-field and then corrected to a reference distance of 1 m. This standard is applicable to any and all surface vessels either manned or unmanned. This standard is not applicable to submerged vessels or to aircraft. Measurement systems are described for measurement of underwater sound pressure levels and also the distance or range between the underwater transducers and the subject vessel. Processing and reporting of the data are described, and informational guidance is provided. This standard does not specify or provide guidance on underwater noise criteria.