There is no place quite so cold as a ship without power in the winter.
Many, many years ago I took a last walk through a USN ship I had sailed on for a couple of years. The next day she was going to be decommissioned. It felt like a tomb as I walked through it. It was almost as if it had died and it's soul had departed.
I can imagine sleeping on the JFK in winter under tow with all the ghosts wondering about.