HB0135 BOHAI SEA SUBMARINE WORK FOR MV HANGMINFUHUA IN WEST ANCHORAGE OF QINHUANGDAO PORT FROM 170500UTC TO 201100UTC DEC. ENTERING AND ANCHORING PROHIBITED WITHIN 0.3 MILES RADIUS OF 39-50.41N/119-36.21E. PASS WITH SLOW SPEED. CAUTION ADVISED. HEBEI MSA CHINA.