H11596: NOS Hydrographic Survey , Shumagin Islands, Alaska, 2006-08-06
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The National Oceanic and Atmospheric Administration (NOAA) has the statutory mandate to collect hydrographic data in support of nautical chart compilation for safe...
美国国家海洋和大气管理局(National Oceanic and Atmospheric Administration,以下简称NOAA)拥有收集水文数据的法定职权,以支撑用于保障航行安全的海图编制工作……



