GD77/25 SOUTH CHINA SEA SEMISUBMERSIBLE VESSEL “WEI XIAO TIAN SHI” SHIPPING DRILLING PLATFORM “HAI YANG SHI YOU 165” FROM 21-04.94N 110-32.61E TO 20-51.26N 108-40.95E. FROM 26 APR TO 28 APR.SIGNAL LIGHTS AND SHAPES WILL BE EXHIBITED WIDE BERTH REQUESTED GUANGDONG MSA CHINA