BOHAI SEA ，TUG “HAI YANG SHI YOU 679” TOWING “HAI YANG SHI YOU 922” PLATFORM FROM BZ19-4WHPB（38°22′29.223″ N;119°05′38.572″E）TO BZ34-1WHPD （38°08′28.248″N； 119°31′35.768″E）, FROM 100800 UTC APR.TO 181600 UTC APR. SPEED 4 KNOTS.LENGTH OF TOWING 507 METERS. CAUTION REQUESTED.