Home / Standards / GB/T 40709-2021 GB/T 40709-2021 Active Technical requirements for swell compensator of trailing suction hopper dredger 耙吸挖泥船波浪补偿器技术要求 Standard Type GBT ICS 47.020.50 CCS U34 Status 现行 Issue Date 2021-10-11 Implementation 2022-05-01 Responsible Dept 交通运输部 Drafting Unit N/A