I like the look of this beast, a very credible looking vessel. I'll like to add that as far as my knowledge goes, a nuclear vessel is always steam propelled, so an auxiliary "get me home" diesel engine is likely.
I also join erik_t remerks about the vacant looking superstructure block, especially when considering that the life boat and rafts are on those levels without any access doors or hatches.
That aside I like this drawing very much
Thank you Kim for the crest
"Never fear to try on something new. Remember that the Titanic was built by professionals, and the Ark by an amateur"