本文件规定了船用起重机的噪声限值、噪声测量方法和听力保护，包括电动液压缸变幅起重机、电动液压钢丝绳变幅起重机和电动钢丝绳变幅起重机。 本文件适用于船用起重机的噪声评估及其操作员的保护。

This document specifies noise limits, noise measurement methods and hearing protection for marine cranes, including electro-hydraulic cylinder luffing cranes, electro-hydraulic wire rope luffing cranes and electric wire rope luffing cranes. This document is applicable to the noise assessment of marine cranes and for the protection of their operators.