BOHAI SEA ，TUG “HAI YANG SHI YOU 647”、“DE REN” TOWING “ZHONG YOU HAI 11” PLATFORM FROM KL10-2-5dSa (37°44′49.65384″N；119°30′14.07140″E)TO KL10-2-11 (37°46′55.662″N；119°33′00.020″E)。FROM 070800UTC APR.TO 091600 UTC APR. SPEED 4 KNOTS.LENGTH OF TOWING 510 METERS. CAUTION REQUESTED.