NANJING

natural conditions Wind conditions: The prevailing wind direction is northeast, with an average annual wind speed of 2.6 meters per second. The strong wind direction is northwest, with a maximum wind speed of 25 meters per second and an instantaneous maximum wind speed of 39.9 meters per second. Tropical cyclones (typhoons) in summer and autumn have a certain impact on the port area. Precipitation: The maximum annual rainfall is 1612.3 millimeters, the minimum annual rainfall is 567.6 millimeters, the average annual precipitation is 1001.8 millimeters, the average annual rainfall days are 120 days, and the average number of days with daily rainfall greater than or equal to moderate rain is 29.4 days per year. Fog condition: The average annual foggy days are 32 days, with the majority in February, April, and August. Generally, it is radiation fog with a short duration. Temperature: The annual average temperature is 15.4 ℃, with a historical maximum temperature of 43 ℃ and a minimum temperature of -14 ℃. Ice condition: The average snowfall days per year are 9 days, with a maximum snow depth of 51 centimeters. It belongs to the tidal section of the Yangtze River. The highest water level over the years is 10.22 meters, the lowest water level is 1.54 meters, and the annual average water level is 5.31 meters (based on Wusong zero point); The average tidal range during the dry season is 0.7-0.9 meters, while during the flood season it is 0.3-0.5 meters, with a maximum tidal range of 1.56 meters and a minimum tidal range of 0.1 meters. Navigation assistance information Channel: The downstream of the Yangtze River from Nanjing to the mouth of the Yangtze River is a sea passage. Currently, the Longzhaoyan to Yanziji channel maintains a water depth of -10.5 meters and a width greater than 200 meters. The turning radius of the channel is much larger than 5 times the length of the navigable ships. Ships with a full load and shallow draft depth below -9.70 meters can navigate year-round. Due to the limitations of the clearance height and channel depth of the Nanjing Yangtze River Bridge, 5000 ton ships above the bridge can reach Wuhu, and during moderate flood levels, they can reach Jiujiang and Wuhan; A 3000 ton ship can reach Wuhan and Chenglingji. There are 82 navigation markers in the port area, including 15 river crossing buoys, 60 ship buoys, and 7 coastal markers. In addition, there are 5 sets of bridge and culvert markers. Anchorage: There are a total of eight locations, namely Meizhong Anchorage, Meizizhou Anchorage, Shangyuanmen Anchorage, Xinshengwei Anchorage, Qixia Mountain Anchorage, Niaoyuzhou Anchorage, Yizheng Anchorage, and Joint Inspection Anchorage.