Home / Standards / GB/T 19721.3-2017 GB/T 19721.3-2017 Active The issue of marine forecasts and warnings—Part 3: The issue of sea ice forecasts and warnings 海洋预报和警报发布 第3部分：海冰预报和警报发布 Standard Type GBT ICS 07.060 CCS A45 Status 现行 Issue Date 2017-03-09 Implementation 2017-10-01 Responsible Dept 自然资源部（海洋） Drafting Unit N/A