YELLOW SEAM/V “BERGE DACHSTEIN” TRIAL VOYAGE FROM 060300UTC TO 091600UTC MAR IN AREA BOUNDED BY THE LINES JOINING.A:37°37′N,123°17′E; B:37°54′N,123°17′E; C:37°54′N,123°50′E; D:37°37′N,123°50′E,CAUTION ADVISED.