Hi,
I have reasonable/decent plans from The Engineer or Engineering Technical Journals of that period, also lithographs of the ship and I think one or two others of that period. Plenty of plans of early American warships from the 1860's US Civil War on - it was an interest once.
I think I also have a plan from Russia which is a bit basic, but would cetainly serve to produce a reasonable model, if you were so enclined.
I also know how to make a model from the plans so could help you there, if you wanted too.
By model, I mean static scale or for radio control, like a working model, which is all I build, in card.
The above material dates back to the 1880's and as such should not be subject to copyright which they didn't have then anyway.
Could be interested in a trade of some sort - over to you - email address and follow up - in your court now.
J77ason