BOHAI SEA ，TUG “HAIYANGSHIYOU677”TOWING “ZHAOSHANGHAILONG5” PLATFORM FROM BZ21-2-3(38°25′24.519″N,119°14′27.875″E)TO CB-B(38°26′33.328″N,118°25′50.921″E) FROM 050400 UTC AUG .TO 121500 UTC AUG.SPEED 4 KNOTS.LENGTH OF TOWING 507 METERS. CAUTION REQUESTED.