HB65/22 BOHAI SEA SEA TRIALS FROM 2300UTC TO 1100UTC DAILY FROM 27 TO 30 APR IN FOLLOWING AREAS.
AREA ONE BOUNDED BY THE LINES JOINING:
（1）39-54.29N/119-36.31E； （2）39-54.20N/119-36.21E；
（3）39-54.18N/119-36.20E； （4）39-54.18N/119-36.34E；
AREA TWO BOUNDED BY THE LINES JOINING:
（1）39-54.56N/119-54.02E； （2）39-50.14N/119-52.50E；
（3）39-49.12N/119-59.11E； （4）39-54.08N/120-00.20E.
CAUTION ADVISED. HEBEI MSA CHINA.