YELLOW SEA， M/V ZHAO SHANG 270 TRIAL VOYAGE FROM 200000UTC TO 290900UTC APR. IN AREA BOUNDED BY THE LINES JOINING. 37-20N 123-15E； 37-20N 123-10E； 36-35N 123-30E； 36-35N 123-15E. CAUTION ADVISED. SHANDONG MSA CHINA
