BOHAI SEA, FROM 160500UTC TO 211500UTC DEC, TUG HAIYANGSHIYOU677 TOWING BOHAI4HAO DRILLING PLATFORM, LENGTH OVERALL 550 METERS, SPEED 4 KNOTS, VIA:
A:37-59-56N/119-38-51E；
B:37-49-00N/119-29-00E；
C:37-44-46N/119-32-07E.
CAUTION TO AVOID.
SHANDONG MSA CHINA.