NORTH BOHAI SEA TUG HAI YANG SHI YOU 679 TOWING BO HAI 4 HAO DRILLING PLATFORM FROM 40-06.45N 121-09.13E TO 38-15.41N 119-28.64E AT 060000UTC AUG LENGTH OVERALL 545 METRES SPEED 4 KNOTS VIA 39-59.50N 121-01.00E,38-24.00N 119-33.00E.WIDE BERTH REQUESTED.LIAONING MSA CHINA.