Ok. Had an idea.
Im thinking of using the hull of Thoroughbred's 1:600 scale Banshee I.
http://thoroughbredmodels.com/images/TS74.jpgIts got a very simular appearence and the same length to beam ratio.
Ok, maths time.
This ship (Banshee) was roughly 200' long in real life and the model is at 1/600th scale, thus at 1/1200 it would represent a ship 400' long. At 1/2400 it would be 800'.
The Great Eastern was just shy of 700' long, so the Banshee at 1/2400 scale should be just about right I think. I think I can pass off a 100' extension without too much trouble, afterall, the union did add a ram and a forward casemate.
On another note, how would anyone arm a ship this size? any ideas?
Thanks again
Mr.Marx