The listed Cruisers, Destroyers, and I believe the Super Carrier would have been from the U.S. 7th fleet, back before the war. These ships are/were stationed out of Yokosuka Japan. 

In an earlier nation sheet, before modifications, I had this fleet sailing back for the continental United States when the bombs dropped. The commander of this fleet would have stopped in Guam, and then Hawaii on the way back. The Missouri would have been anchored in Pearl, and even if Pearl was nuked, she would have still been afloat unless a bombed was dropped right atop of her. (https://en.wikipedia.org/wiki/Operation_Crossroads). The same would have gone for the USS Hornet. Even though both ships were no longer in their former glory, the Commander of the 7th fleet would have recognized their value, even if as morale pieces. 

The Hornet and the Missouri were to be mainly harbor defense ships, moored/docked most of the time. The main reason to take the Mighty Mo is that old world guns it had upon it, which in theory could be eventually copied and built/produced for other ships. This has yet to happen, as time and money have not been allocated for such.

Overall, its your call, I am not trying to power play, or be the biggest guy with the biggest guns. Just recognize the importance of historical artifacts and their usages for morale purposes.

As for the subs, both are WW2 era class subs, and have yet to been repaired sufficiently for maritime usage. They are in dry dock being studied and worked on for future use, should that time ever arrive. (Long way down the road.)