Ah, you came in from Richmond then?
From the refugee camp you ended up at, go one map west and then all the way (2 or 3 maps) down to the port. At the bottom right of that map is a captain standing next to his ship that will ferry you to Rathpike for... i think 20 silver. He has a special thing over his head, can't miss him once you see him.
Wow, there he is, thank you so so much. I've been stuck forever doing every single side quest hoping one would take me there...