How do I get from Chongqing North railway station to the Chao Tianmen Dock?

You can take the subway line 3 from the railway station and get off at Lianglukou Station, and then transfer to line 1 and get off at Xiaoshizi Station. Leave from the Exit 4B, which is about 1.2 km from the dock. You can walk or take a taxi to the destination.

Or you just take the taxi whole way, about CNY 30.