BOHAI SEA, FROM 300000UTC JUN TO 020400UTC JUL,tug GANGQING towing PLATFORM H419, LENGTH overall 200 meters, speed 4 knots，VIA：
A：37°37.880N,120°18.000E
B：37°38.530N,120°16.880E
C：37°38.430N,120°14.500E
D：37°39.000N,120°13.200E
E：37°41.000N,120°11.333E
F：37°55.000N,120°16.000E
G: 38°02.500N,120°23.500E
H：38°00.900N,120°40.000E
I：37°57.500N,121°00.000E
J: 37°51.000N,121°20.000E
K: 37°40.000N,121°26.000E
L: 37°36.375N,121°24.965E
CAUTION ADVISED.