GD0054 SOUTH CHINA SEA WELLSITE SURVEY WORK CARRY OUT BY M/V “FEN DOU SI HAO” AND “FEN DOU WU HAO” IN AREA WITHIN 2.5NM RADIUS OF 21-41-15N 116-43-00E FROM 29 MAR. TO 11 MAY SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED ADVISED TO AVOID GUANGDONG MSA CHINA