ss oder 6-12-1868

I am a novice and I think I need some help with my ancestors emigration from Norway. I think I found them on the ss Oder departing June 12 1868 but they were traveling to Hull so I know there must have been a connecting ship to the US. I simply do not know where or how to find it. My ancestors are Johannes Johannesen, his wife Vibik Olsdttr, his brother Tale Johannesen and 9 year old son Johan Johannesen. They all settled in Wisconsin. Thank you for any assistance you can give.