GD0067 SOUTH CHINA SEA DRILLING OPERATION CARRY OUT BY DRILLING PLATFORM “NAN HAI LIU HAO” IN AREA WITHIN 1NM RADIUS OF 20-23-25.91N 115-25-54.69E FROM 14 APR. TO 30 JUN. SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA