BOHAI SEA ，TUG “SHENG LI 291” TOWING “SHENG LI QI HAO ” PLATFORM FROM QingDong43（37°24′53.84″N,119°04′14.58″E）TO CB814（38°15′41.28″N，118°55′32.64″E）. FROM 261600 UTC FEB. TO 041600 UTC MAR. SPEED 4 KNOTS. LENGTH OF TOWING 500 METERS. CAUTION REQUESTED.