Tickets are tight, so you'd better book them in advance at the ticket office ~
1. Baotuo Ship:/kloc-0 sails from Putuoshan Bus Terminal to nanpu bridge Bus Terminal at 3: 20, and the sailing time is about 4 hours. 17: 20 arrives in Shanghai. Only the middle cabin (ordinary soft seat) costs 225 yuan, and the minimum cost for six adults is 225*6= 1530 yuan.
(How old is the child? Are you above 1.5 or above 1.2? )
2. Putuoshan Ship sails at 16: 30, sails from Putuoshan Bus Terminal to Shanghai Wusong Port for about 14 hours, and arrives in Shanghai at 06: 30 the next morning. The fare for the fourth class (12 persons) is 139 yuan/person, and the minimum fare for six adults is 139*6=834 yuan.
Personally, I suggest choosing Putuo Mountain Wheel. Although the sailing time is long, the sleeper can facilitate children and adults to have a good rest.