I am a stickler for accuracy in the models. I also have noticed the Revell tendency to cut down their "full hull" models to make a flat bottom just at the bilge curve.
I've heard this explained away as being due to the Navy's censorship on the propulsion units of their Cold War warships, but this explanation rings false w/respect to the C-3 variants and the attack transport models, which were produced over 25 years after the last of these ships left the ways.
Most likely they were modeled this way because of the complexity of the underwater fairing and contour lines, etc. Plus it was relatively easier to make a stand on which to rest the flat bottomed models.
Again, thanks for the helpful replies and I will certainly be kept busy sorting out the various kits mentioned.