YELLOW SEAM/V “CHANGLU 768” TRIAL VOYAGE FROM 180000UTC TO 180900UTC JAN IN AREA BOUNDED BY THE LINES JOINING. 37-38N 122-00E; 37-38N 122-05E; 37-40N 122-00E; 37-40N 122-05E, CAUTION ADVISED. SHANDONG MSA CHINA