Thanks for putting up those links....very useful
The British paddle gunboat model provides a wealth of details....could come in handy for those of us into 'Nemesis' projects and Victorian warships in general.
The Argentinian one is particularly interesting and of great interest for those into the 'Ironclad' period as it covers various river gunboats, both paddlers and screw-driven from the Triple Alliance War. There is even a monitor in there.
However there quoted length of the 'Anhambay' at 412 metres would have made twice as long as than the Great Eastern?! (must be 41.2 m?).