NORTH BOHAI SEA TUG HAI YANG SHI YOU 677 TOWING BO HAI 4 HAO DRILLING PLATFORM FROM 40-12.78N 121-05.23E TO 40-28.06N 121-12.70E AT 240000UTC JUN LENGTH OVERALL 545 METRES SPEED 4 KNOTS VIA 40-25.00N 121-15.50E.WIDE BERTH REQUESTED.LIAONING MSA CHINA.