And a 19th century ship of the line never needs to refuel. A hull can be 16" thick of solid steel and still be unsound. Crew size for simply
maintaining a battleship will exceed 1000 (the last iteration required 1800 -- and the ships were
only ~40 years old then. Now they are topping 60, with all the problems aging vessels have. It doesn't help that one is now a museum and the other hasn't been actively maintained for more than a decade.
If the Navy really wants a battelship, it's best bet is to design and build one from scratch, not reactivate one built for a war fought more than half a century back.
A hull can be 16" thick of solid steel and still be unsound. Yes, of course. That's why Iraqi soldiers surrendered to the first adumbration of their coming.
If you think the Iowa's steel is unsound........here's a paint chipper, get busy. Show me all the unsound bits, sailor.
LOL.