Well, I started Carrier and never finished it awhile ago, and I haven't lived on ships yet but didn't it focus mostly on junior enlisted, officers and some of the leadership?
The great majority of Nukes are going to be petty officers by the time they hit the fleet, which may explain why you didn't see many of them. As far as I know there aren't separate barracks for different rates, although they might try to put you close to where you work during the day.
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