GD81/25 SOUTH CHINA SEA M/V “HAI YANG SHI YOU 670” TOWING DRILLING PLATFORM “NAN HAI JIU HAO” FROM 19-50.1N 112-44.7E TO 19-46.1N 112-39.0E.FROM 1 TO 2 MAY. LENGTH OVERALL 500M SPEED 4KN SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA