The most easiest way is a taxi because Nanjing road it not far from the Ship Terminal. (starts from 12 Yuan = 1,30 Euro)
So i Think maximum will be 30 - 50 yuan. It would be easy if you have the name of the street where you want to go in chinese or try to get a map at the VVV in your country or on the internet.
Metro Line 2 stops at Nanjing Road East and West(maximum 5 Yuan)
but you'll have to transfer twice from other lines.
Regards ms Joan