I am staying by the Shanghai Ocean Hotel close to the cruise terminal.

You cannot use the high speed train but you can use metro line. Walk northeast about 800m to take outer ring of Metro Line 4 to Baoshan Road and then transfer to Metro Line 3 to Baoyang Road. Get out of the Exit 1 and then walk west about 400m to take Baoshan Bus Line 29 to Wusongkou Cruise.