GD139/21 SOUTH CHINA SEA M/V “HAI YANG SHI YOU 670” TOWING DRILLING PLATFORM “NAN HAI QI HAO” FROM 19-47-05N 112-21-55E TO 19-23-45N 112-04-18E FROM 3 TO 6 JUL. LENGTH OVERALL 400M SPEED 3KN TO 4KN SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA