S63标准就是加密的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。(The S63 standard is the encryption of the S57 standard, is the transfer standard for digital hydrographic data. Is to explain the national Hydrographic Department for d