So, my three favorite ships in the Sci Fi genre are as follows (not in order because please don’t make me do that):
Battlestar Galactica, Serenity, and the Millenium Falcon.
I did a scale check to see how they stack up. I knew the order of size would be Millenium Falcon at the smallest, Firefly at nearly double the size, and BSG would be the proverbial tractor trailor. I had no idea it would be THIS extreme until I started actually looking up the number. From the best resources I could find, this is an image of the scale (click to view full size):