Home / Standards / GB/T 3221-2020 GB/T 3221-2020 Active Code for mooring and sea trials of internal combustion engine-driven inland ships 内燃机动力内河船舶系泊和航行试验大纲 Standard Type GBT ICS 47.020 CCS U44 Status 现行 Issue Date 2020-11-19 Implementation 2021-06-01 Responsible Dept 交通运输部 Drafting Unit N/A