HB0125 BOHAI SEA SUBMARINE WORK FOR MV MINGZHOU62 IN WEST ANCHORAGE OF QINHUANGDAO PORT FROM 010200UTC TO 011100UTC DEC. ENTERING AND ANCHORING PROHIBITED WITHIN 0.5 MILES RADIUS OF 39-45.45N/119-39.70E. PASS WITH SLOW SPEED. CAUTION ADVISED. HEBEI MSA CHINA.