Home / Standards / GB/T 40523.2-2021 GB/T 40523.2-2021 Active Ships and marine technology—Measurement of changes in hull and propeller performance—Part 2: Default method 船舶与海上技术 船体和螺旋桨性能变化测量 第2部分：默认方法 Standard Type GBT ICS 47.020.99 CCS U40 Status 现行 Issue Date 2021-08-20 Implementation 2022-03-01 Responsible Dept 国家标准委 Drafting Unit N/A