GD148/21 SOUTH CHINA SEA M/V “HAI YANG SHI YOU 681” TOWING DRILLING PLATFORM “SINOOCEAN AUSPICIOUS” FROM 21-12-38N 115-10-48E TO 21-11-43N 115-08-41E FROM 10 TO 11 JUL. LENGTH OVERALL 300M TO 600M SPEED 3KN TO 6KN SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA