What is the underwater length and deepest depth of Nanjing Yangtze River Tunnel?

The underwater length of Nanjing Yangtze River Tunnel should be equal to the width of the river it crosses, which is related to the season. For example, the width in flood season is much wider than that in winter. According to the map, there are two underwater tunnels, namely Lvshuiwan 1 section and the main channel of the Yangtze River 1 section. From the map, the length of the two sections is about 1985 m, that is, the underwater degree of Nanjing Yangtze River Tunnel is usually about 1985 m.. According to official reports, the deepest part of Nanjing Yangtze River Tunnel is 65 meters.