Well I don’t know if this is THE definitive size comparison chart for Sci-Fi starships…..
But man, if this ain’t close, I don’t know what is!!!!
It’s enormous! It’s incredibly detailed! It’s totally geeky!

Enjoy!

size_comparison___science_fiction_spaceships_by_dirkloechel-d6lfgdf

Image Source: [TrekBBS][DeviantArt]