BOHAI SEA TUG HAI YANG SHI YOU 677 TOWING HAI YANG SHI YOU 922 DRILLING PLATFORM FROM 40-09.39N 121-03.17E TO 39-57.39N 120-48.34E AT 090400UTC OCT LENGTH OVERALL 510 METRES SPEED 4 KNOTS VIA 40-02.00N 120-48.34E.WIDE BERTH REQUESTED.CANCEL LN208/21.LIAONING MSA CHINA.