I'm just getting started with 3D animation in Blender, and I just want a highly detailed model to play around with. Sorry if I'm not experienced enough to give more info.
Just to satisfy my curiosity (and see how mine compares!), can someone post a image rendered with this model?
https://www.artstation.com/artwork/zO1krd
Good catch! It's a great looking model, but if those are missing, there are probably other things...
The grooves on the nacelle end caps are square and there's an extra indentation.
Since @Disposable_Ensign asked about "accurate" models the OP would need to ask themselves the question of accurate to what? and how accurate? 
Lewis Nevin's has beautiful texturing with just minor differences like the missing 3 tabs on the nacelle dome caps when compared to the 11' model and extra three lights next to the impulse exhausts. Most people wouldn't even notice the difference, IMHO.
Which is, of course, balanced by the fact that it is free and publicly available.
It almost makes me want to volunteer. (No.)Makes me pine for a similarly "near accurate" 3d mesh of the Seaview from Voyage to the Bottom of the Sea available for download. What I have spotted so far (and I've Googled on and off for years) are just so bloody "off model" as to make me grit my teeth. Scans of official elevation drawings exist on the net (I've downloaded them) for the film version and the TV style (for both scales filming miniatures) so there just isn't a reason for models to have "manta ray" fins as wide as airplane wings or hulls curved like bananas!
Uh, sorry for the off topic tirade.
I left those tabs off because they struck me as something that was there because of 'real world' requirements, ie, attaching the caps, as opposed to in universe features. I didn't set out to recreate the 11ft exactly, more an approximation of what I felt was right. So yeah its not 100% 'accurate', but then the filming model was missing an entire port side, who who's model is :P.
