SD424/25,BOHAI STRAIT,FROM 300700 UTC JUN TO 011300 UTC JUL,TUG WEIGANGTUO21 TOWING JIANGHONGLUXING, FROM 37-33.36N 121-23.69E TO 36-50.87N 122-09.91E,MAINLY VIA: 37-33.06N 121-23.80E,37-32.97N 121-24.45E,37-33.03N 121-24.77E, 37-33.35N 121-25.70E,37-35.15N 121-26.92E,37-38.36N 121-29.55E, 37-45.10N 121-32.18E,37-39.32N 122-09.52E,37-36.84N 122-27.23E, 37-31.05N 122-42.24E,37-24.84N 122-46.96E,37-02.83N 122-46.72E, 36-52.30N 122-42.63E,36-39.72N 122-19.78E,36-47.35N 122-12.12E, TOWING LENGTH OVERALL 200 METERS,SPEED 5 KNOTS.CAUTION TO AVOID.SHANDONG MSA CHINA.