S57 标准，是 数字海道测量数据传输标准。在于对各国海道部门之间用于交换数字化海道数据以及传递给 生产常见、航海者和其他用户的标准加以说明。(S57 standard is the digital hydrographic data transmission standard. Is to explain the national Hydrographic Department for digital hydrographic data exchange standard and passed to the common production, navigation and other users.)