GD161/21 SOUTH CHINA SEA M/V “HAI YANG SHI YOU 684” TOWING DRILLING PLATFORM “NAN HAI SHI HAO” FROM 21-39-46N 116-05-42E TO 21-39-47N 116-08-59E FROM 28 TO 29 JUL. LENGTH OVERALL 300M TO 600M SPEED 3KN TO 6KN SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA