HB0009 BOHAI SEA SUBMARINE WORK FOR MV XIEHAITENGFEI IN WEST ANCHORAGE OF QINHUANGDAO PORT FROM 0030UTC TO 1100UTC DAILY FROM 19 TO 21 JAN. ENTERING AND ANCHORING PROHIBITED WITHIN 0.4 MILES RADIUS OF 39-50.93N/119-37.54E. PASS WITH SLOW SPEED. CAUTION ADVISED. HEBEI MSA CHINA.