GD164/21 SOUTH CHINA SEA DRILLING OPERATION BY DRILLING PLATFORM “NAN HAI SI HAO” IN AREA WITHIN 1NM RADIUS OF 20-30.6N 109-30.8E FROM 30 JUL. TO 27 SEP. SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA
