That Nautilus island appears to suffer from one rather big problem (though how big, of course, depends on how picky the modeler is). Like every Yorktown and Enterprise kit ever put on the market, it lacks The Gap.
I've mentioned this in several other Forum threads; it's a rather curious, but conspicuous feature of the first two Yorktown-class carriers. I found out about it quite some time back when I was starting a conversion (which, like most of my ambitious ideas, I never finished) of the Tamiya 1/700 Enterprise to the Yorktown. I ordered a copy of the "Booklet of General Plans" for the Yorktown from The Floating Drydock. (They are, by the way, fascinating - and an excellent, reasonably priced source for anybody working on a model of the ship.) The first feature of the drawings that caught my eye was that they made a defect of the Tamiya kit ludicrously obvious: the kit's island is way too skinny. And on the plan view of the uppermost deck of the island - the deck, that is, that forms the bottom of the big, slablike funnel structure - there was a space, between the tripod mast and the front of the foremost funnel itself, marked "Void."
I guess the plating of the funnel structure was conceived as a fairing around the three stack uptakes, to insulate them and, maybe, make the whole structure look better. According to the plans, there was a fair amount of empty space surrounding the stacks themselves (except at the very top, where the whole structure was capped off by a platform with three holes in it for the stack uptakes.) At the forward end of this structure there was a considerable space - I'll guess it was ten feet wide or thereabouts - where, to put it in plastic modeler's terms, the port and starboard halves didn't meet. There's no explanation on the plans for this; I guess the idea was simply to increase air circulation around the stacks.
It's a rather significant feature of the funnel structure. The problem is that, due to its location, it's extremely difficult to see in photographs of the ships. But if you know what you're looking for you can make it out in some pictures. It looks like there's a wide, black stripe painted on the front of the funnel structure, all the way from the deck to the cap. The Gap can also be seen in a few of the published photos of the wreck of the Yorktown. (You may be tempted to think you're looking at an example of corrosion, but you're not. The National Geographic Society used to have some beautiful shots of the wreck on its website, but not any more. I guess the public's lost interest.)
For some reason or other the design of the Hornet's island was changed. There's no Gap in it; the plating runs all the way around the funnel structure.
My good friend Mike F6F is working on a 1/700 Enterprise in which he's taken pains to get The Gap right. It's fairly easy to add in the process of correcting the Tamiya island; as you add spacers to make the rest of the island fatter, just leave the two halves of the funnel structure as they are. Here's a link to Mike's thread, which contains some good, accurate information about the point - including a photo of the real ship: /forums/1145160/ShowPost.aspx .
Adding The Gap to a cast resin aftermarket island would be a bigger challenge - and I don't blame any modeler who concludes that it isn't worth the trouble. I have to confess that The Gap is one of the first things I look for when I see a model of either of those two great ships, but that's undoubtedly a characteristic of fundamental weirdness on my part.
Another small, but visually conspicuous point. Sometime before the war started the Yorktown's bridge structure was modified. The platform immediately below the armored conning tower was altered; if I remember correctly the captain had requested the change, so he'd have a more convenient, open area to observe flight operations. The new configuration is shown in this shot: http://www.navsource.org/archives/02/020503.jpg . She had that platform configuration throughout her wartime career. The photo of the Nautilus island that Ed posted doesn't seem to have that detail. Maybe the kit includes a separate resin part for it.
It seems odd that this famous and important ship has attracted so little attention from the kit manufacturers. There are lots of Enterprise and Hornet kits on the market, and for a while Revell sold its (rather basic) 1/485 Yorktown-class kit in a box labeled "Battle of Midway Carrier," in which configuration the modeler supposedly could build it as any of the three ships. But the only kit specifically labeled as the Yorktown that I can think of is a 1/485 version Revell released in (according to Dr. Graham's book) 1968. It was in fact a reissue of the mediocre Enterprise kit, with some of the anti-aircraft guns omitted and instructions to paint the SBDs silver and yellow.
Seems like the Yorktown deserves more attention than that. To anybody building a model of her - bravo and good luck.