YELLOW SEAM/V “HAIYANGSHIYOU 278” TRIAL VOYAGE FROM 080200UTC TO 130900UTC FEB IN AREA BOUNDED BY THE LINES JOINING. 37-20N/123-15E; 37-20N/123-30E; 36-35N/123-30E; 36-35N/123-15E, CAUTION ADVISED. SHANDONG MSA CHINA