HB0111 BOHAI SEA SUBMARINE WORK FOR MV MINGZHOU62 IN WEST ANCHORAGE OF QINHUANGDAO PORT FROM 0030UTC TO 1100UTC DAILY FROM 8 TO 13 NOV. ENTERING AND ANCHORING PROHIBITED WITHIN 0.3 MILES RADIUS OF 39-43.68N/119-39.48E. PASS WITH SLOW SPEED. CAUTION ADVISED. HEBEI MSA CHINA.