S/S Argo 1 Connection 1868

I found my ancestors on the list which tells thier first stop was Hull. Then last was Chicago Illinios. I'm trying to find what was their connecting ship that brought them to the states. Their Departure was from Christianaon May22,1868. Their family was Niels Olsen, Hellene Hansdatter Olsen, Mauritz, Ovidia, and Nora. If anybody can help me hear that would be great. Thanks Kim[:)]