Deck/Nautical Equipment/372501 RADAR TRANSPONDER 99HZ

At least 1 radar transponder shall be carried on each side of every cargo ship of 500 gross tons or more.  Upon receiving radio waves from 9 GHz shipboard radar, this unit sends signals to indicate its position and bearing on the screen. 

每艘500总吨或以上的货船的每舷须载备至少1部雷达应答器。当接收到来自9 GHz舰载雷达的无线电波时，该单元发送信号以在屏幕上指示其位置和方位。