SD181/24,YELLOW SEA,242330UTC APR M/V BEI HAI 553 SAIL FROM QINGDAO BEIHAI SHIPYARD 35-59.3N 120-15.1E FOR SEA TRIAL.25 TO 26 APR ,SEA TRIAL IN AREA BOUNDED BY THE LINES JOINING 36-01.9N 121-06.0E,36-05.0N 122-05.0E,35-50.0N 122-05.0E,35-52.5N 121-06.0E. 26 APR TO 2 MAY, SEA TRIAL IN AREA BOUNDED BY THE LINES JOINING 36-28.0N 122-00.0E,36-28.0N 123-00.0E,35-08.6N 123-00.0E,35-08.6N 122-00.0E.2 TO 4 MAY, SEA TRIAL IN AREA BOUNDED BY THE LINES JOINING 35-59.5N 120-44.5E,36-02.8N 121-12.0E,35-57.3N 121-12.0E,35-57.7N 120-44.5E.CAUTION ADVISED. SHANDONG MSA CHINA