GD0086 SOUTH CHINA SEA DRILLING OPERATION BY DRILLING PLATFORM “NAN HAI QI HAO” IN AREA WITHIN 1N MILE RADIUS OF 19-42-12.49N 112-26-19.61E FROM 21 APR. TO 21 JUN. SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA
