BOHAI SEA, FROM 210800UTC MAR TO 031600UTC APR, DIVING WORK CARRIED IN TWO AREAS:
AREA1：WITHIN 500 METERS RADIUS OF 37-55.5N/119-35.9E ;
AREA2：WITHIN 500 METERS RADIUS OF 37-59.9N/119-38.9E.
CAUTION TO AVOID.
SHANDONG MSA CHINA.