GD55/22 SOUTH CHINA SEA M/V “HAI YANG SHI YOU 678” TOWING DRILLING PLATFORM “SINOOCEAN AUSPICIOUS” FROM 21-17-42N 115-26-56E TO 21-18-48N 115-21-10E FROM 28 TO 29 MAY LENGTH OVERALL 300M TO 600M SPEED 3KN TO 6KN SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA