thank you very much. Yes, this "Wilhelm Jakowsky" belong to me. But I know this data sheet, it is only the evidence that he left Hamburg in March 1873 and arrived in Hartlepool. But I have not the clear evidence that he took the "Spain" and arrived in New York.
The problem is that he appeared in Australia 6 years later (marrying an Australian girl) and I found no data when he exactly arrived in Australia. Unfortunately my great-great grandfather spread some false personal information in Australia. I try to reconstruct this missing 6 years.