GD0068 SOUTH CHINA SEA SEISMIC SURVEY CARRY OUT BY M/V “HAI YANG SHI YOU 721” IN AREA BOUNDED BY 22-05-23.9N 115-11-52.5E，22-05-54.2N 115-51-45.9E，21-27-21.8N 115-40-27.8E，21-20-14.2N 115-09-08.4E AND 21-20-39.1N 114-57-07.5E FROM 14 APR. TO 10 MAY THE VESSEL TOWING 12 CABLES LENGTH 6000M WITH YELLOW VISUAL BUOY AT EACH CABLE END FLASHING WHITE LIGHT AT NIGHT SPEED 4.5KN SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED CROSSING THE CABLES AREA PROHIBITED GUANGDONG MSA CHINA