BOHAI SEA ， TUG“HAI YANG SHI YOU 677” TOWING “ZHONG YOU HAI 17” PLATFORM FROM BZ26-5-1（38°15′36.424″N；119°19′06.203″E）TO BZ29-4WHPA（38°12′15.314″N；119°43′21.655″E）。FROM 291200 UTC APR.TO 041600 UTC MAY. SPEED 4 KNOTS.LENGTH OF TOWING 520 METERS. CAUTION REQUESTED.