GD0099 SOUTH CHINA SEA GEOLOGICAL SURVEY CARRY OUT BY M/V “HAI YANG SHI YOU 708” IN AREA BOUNDED BY 21-42-11.19N 116-40-51.44E，21-40-33.62N 116-40-51.66E，21-40-33.93N 116-43-45.65E AND 21-42-11.50N 116-43-45.47E FROM 23 MAY TO 31 AUG. SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED ADVISED TO AVOID GUANGDONG MSA CHINA