Thanks for doing the research. It looks like -44.7% is the new +/- 10%.Well at 2 squares per dTon, the AHL deckplans only cover 66358/2 = 33179 dTons, and it's a 60K ton ship.
Oh well!
This makes me realize that designing a ship of a certain size or larger will be quite the undertaking. Might be better to design the ship and just imagine the interior, or just design the decks that are necessary to the campaign. Or don't let the Players Characters get on a ship that size at all!