渤海湾
Icing: Ice cover in the Bohai Bay is highest in February. Shore icing extends an average of 500 m, with an average thickness of 10–25 cm, maximum of 40 cm. Drift ice extends 15–20 nm, roughly to the 10–15 m isobath. Average drift ice thickness is around 5 cm, maximum thickness is 20–25 cm. Ice flows are SE–NW, at an average speed of 30 cm/s, maximum of 100 cm/s.