GD0261 ZHANJIANG PORT LIGHTED BUOY 17/19/21/23/25 REMOVED ON 24 DEC. AND LIGHTED BUOY 17 VIRTUAL AIS ESTABLISHED IN POSN 21-02-27.86N 110-43-03.51E,MMSI：994136803 LIGHTED BUOY 23 VIRTUAL AIS ESTABLISHED IN POSN 21-02-52.46N 110-39-26.91E MMSI：994136804 CAUTION ADVISED GUANGDONG MSA CHINA