BOHAI SEA ， TUG “HAIYANGSHIYOU677” TOWING “HAIYANGSHIYOU281” PLATFORM FROM BZ34-2EW（38°07′37.33〞N/119°33′24.73〞E） TO BZ34-5WJ （38°03′57〞N/119°32′34〞E） FROM 290600 UTC MAR .TO 310700 UTC MAR.SPEED 4.5 KNOTS.LENGTH OF TOWING 500 METERS. CAUTION REQUESTED.