GD158/21 SOUTH CHINA SEA M/V “HAI YANG SHI YOU 671” TOWING DRILLING PLATFORM “NAN HAI QI HAO” FROM 19-41-30N 112-40-50E TO 19-23-45N 112-04-18E FROM 27 TO 30 JUL. LENGTH OVERALL 400M SPEED 3KN TO 4KN SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA