GD183/21 SOUTH CHINA SEA SEISMIC SURVEY BY M/V “HAI YANG SHI YOU 721” AND “HAI YANG SHI YOU 760” IN AREA BOUNDED BY 20-01-32N 113-18-17E、20-01-51N 113-34-05E、19-44-06N 113-34-28E、19-44-26N 113-51-46E、19-16-29N 113-52-19E AND 19-15-52N 113-19-19E FROM 19 AUG. TO 31 DEC. DURING OPERATION M/V “HAI YANG SHI YOU 721” TOWING 12 CABLES AND M/V “HAI YANG SHI YOU 760” TOWING 6 CABLES EACH LENGTH 6000M WITH ORANGE VISUAL BUOY AT 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