urgent information meaning in English

紧急通知

Navtex technical specifications and operational requirements for the systems of promulgation of navigational and meteorological warnings and urgent information
发播航行警告气象信息和其他紧急信息系统
Global maritime distress and safety system - part 6 : narrowband direct - printing telegraph equipment for the reception of navigational and meteorological warnings and urgent information to ships navtex - operational and performance requirements , methods of testing and required test results
海上呼救和安全装置.第6部分:船用船海,气象预报和应急信息接收窄带直接打印电报设备.操作和性能要求,试验方法和结果