Home / Standards / GB/T 42640-2023 GB/T 42640-2023 Active Specification for underwater topographic survey by multibeam echosounding system 多波束水下地形测量技术规范 Standard Type GBT ICS 07.040;07.060 CCS A76 Status 现行 Issue Date 2023-05-23 Implementation 2023-12-01 Responsible Dept 自然资源部(海洋) Drafting Unit N/A