BOHAI SEA ，TUG “HAI YANG SHI YOU 677” TOWING “ZHAO SHANG HAI LONG 9” PLATFORM FROM KL10-2-17Sa （37°44′18.408″N；119°33′30.595″E）TO LD6-2CEPA（39°53′02.083″N；120°58′26.835″E）, FROM 010400 UTC SEP TO 081600 UTC OCT. SPEED 4 KNOTS.LENGTH OF TOWING 520 METERS. CAUTION REQUESTED.