BOHAI SEA ， TUG “HAI YANG SHI YOU 677” TOWING “KAN TAN LIU HAO” PLATFORM FROM BZ19-6-9（38°26′09〞N/119°01′38〞E）TO BZ22-1-3（38°23′39〞N/119°25′48〞E）FROM 241000 UTC DEC TO 261000 UTC DEC. SPEED 4 KNOTS. LENGTH OF TOWING 550 METERS. CAUTION REQUESTED. SHANDONG MSA.