Home / Standards / GB/T 30745-2014 GB/T 30745-2014 Active Gradation and classification on sea area 海域分等定级 Standard Type GBT ICS 07.060 CCS A45 Status 现行 Issue Date 2014-03-27 Implementation 2014-10-01 Responsible Dept 自然资源部(海洋) Drafting Unit N/A