GD0031 SOUTH CHINA SEA DRILLING OPERATION CARRY OUT BY DRILLING PLATFORM “NAN HAI QI HAO” IN AREA WITHIN 1NM RADIUS OF 21-16-51.29N 115-24-01.18E FROM 20 FEB. TO 20 APR. SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA