[Spaceships] Hull size of Falcon...

[GoblynByte]

Originally Posted by Fred Brackin

Do not try and figure Spaceships SM from linear size. It will not only drive you crazy it will give you bad answers too.
paceships..

For better or worse, though, linear size is the *only* quantified bit of data we have on any given Star Wars vessel. Taken from the only tangible and measurable source that exists: The movie assets (in this case, ship models). Everything else (e.g. the amount of cargo mass a YT-1300 can carry) is apocryphal at best, usually grabbed out of thin air by an author (with the occasional use of real-world analogues, as you suggest with the F-15) or supported by vague and useless statements in the script ("She'll make 0.5 past lightspeed").

Beyond that, the only thing that is important is getting roughly the stuff in the design that appears in the movies. If that means I only get 50 tons of cargo instead of 100 tons, I'm okay with that.