BOHAI SEA TUG ZHONG YOU HAI 251 TOWING ZHONG YOU HAI 63 DRILLING PLATFORM FROM 40-39.57N 121-43.71E TO 39-30.50N 121-23.50E AT 112200UTC OCT LENGTH OVERALL 400 METRES SPEED 4 KNOTS VIA 40-05.50N 121-25.30E,39-36.08N 121-05.88E,39-27.38N 121-11.94E.WIDE BERTH REQUESTED.LIAONING MSA CHINA.