Nothing nails the Size of the Enterprise debate down like a ship from a JJ film.I think the Kelvin may be something similar, although not really like an aircraft carrier, it has a saucer larger than the TOS ship would be (if the TOS ship is 289 meters), and it seems to have most of its secondary hull full of space for shuttles.
Again, I generally don't consider anything made after Nemesis to be canon anyway. All I meant was that a ship something like the Kelvin might have existed, and been able to hold 800 people instead 203-430 people, but it would need to be in some role that made it less prominent to the excitement we see in TOS. Some have suggested a colony ship for the Kelvin; additionally I have suggested that it has long-range scout-like purpose and enters an area then sends out teams in shuttles to explore. That would be why it only has one warp nacelle: it needs little maneuverability since it goes into more or less one place and stays while smaller craft do most of the collecting of "strange new" information.

