GB/T 12303-2009
ActiveMeasurement of sound pressure level for sound signal appliances by seagoing vessel
海船声号器具的声压级测量
Application Summary AI generated
This standard specifies the measurement methods and requirements for sound pressure levels of sound signal appliances (such as whistles, horns, and bells) installed on seagoing vessels. It is applied during vessel construction, certification, and periodic inspections to ensure that acoustic warning devices meet international maritime collision prevention regulations (COLREGS). The standard is used by shipbuilders, classification societies, and maritime authorities to verify audibility and compliance for safe navigation in busy waterways and poor visibility conditions.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.