Port of Jingtang (Tangshan)  Position : 39°12'45" N 119°00'45" E  located in the west of Bohai Gulf  Channel : depth / 9.8 meters; length/ 4.4 kilometers.  Temperature : annual average 10.2°, the highest temperature is July with average of 24°C and the lowest is January with average of - 6.9°C.  Wind : wind direction more from the southwest, strong wind more from the northeast.  Precipitation : annual precipitation is 616.8 mm and nearly 60% falls in July and August.  Ice : ice period covered from January to February with thickness leaves no influence for vessel's navigation in the channel and terminal basis.  Fog : annual average 2.8 days.  Hydrology : spring and neap tide changes every half day irregularly with water level rising of 2.24 meters in the highest and 0.04 meters in the lowest, tide difference is 1.23 meters, tide speed 0.5 meters per second.  Hinterland : the port covers municipality of Beijing and part of hebei province.