BOHAI SEA ，TUG “HAI YANG SHI YOU 677” TOWING “BO HAI 12 HAO” PLATFORM FROM ：BZ19-4-7d（38°16′53.301″N;119°03′44.673″E）TO LK25-5-1（38°12′46.606″N;120°09′23.237″E） FROM 190700 UTC Jan. TO 250700 UTC Jan. SPEED 4 KNOTS.LENGTH OF TOWING 506 METERS. CAUTION REQUESTED.