BOHAI SEA, FROM 150400UTC TO 171500UTC JUL,TUG HAIYANGSHIYOU 677 TOWING ZHONGYOUHAI 16， FROM 38-10N/119-42E TO 38-59N/119-00E, LENGTH OVERALL 550 METERS, SPEED 4 KNOTS. CAUTION ADVISED. SHANDONG MSA CHINA.
