I built a Fenris cruiser, and it's 17 studs long, I was gonna build an Aten cruiser to go with it, but my HD fried and I lost what little I had of it, luckily I uploaded my Fenris to Brickshelf.com, I'll get the link, and all those who have MLcad can dl my version of it!
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=5523there it is, I'm also gonna build an Orion, on the same scale, about 200+ studs long!

yes 200+ STUDS LONG.
Man, and after that, I might have to build a Lucy to match it, maybe even a Typhon too!! Maybe, just wait and see

Cya
Cor, AFOL (Adult Fan Of Lego)