HB20/22 BOHAI SEA SEA TRIALS BY MV JIAOGONG63 FROM 0000 TO 0900 DAILY FROM 21 TO 25 JAN IN AREA BOUNDED BY THE LINES JOINING:
(1)39-55.00N 119-53.70E;
(2)39-50.00N 119-53.70E;
(3)39-50.00N 120-03.00E;
(4)39-55.00N 120-03.00E.
CAUTION ADVISED. HEBEI MSA CHINA.