BOHAI SEA ，TUG “BEI HAI JIU 118” TOWING “HAI YANG SHI YOU 937” PLATFORM FROM BZ25-1WHPD（38°12′39.75047″N， 119°05′42.98284″E）TO BZ34-1CEPA（38°08′27.531″N，119°31′39.062″E）, FROM 261000 UTC APR.TO 021600 UTC MAY. SPEED 4 KNOTS.LENGTH OF TOWING 515.25 METERS. CAUTION REQUESTED.