Well, crap. If I was a Hollywood big-shot, I'd go over to the Iowa in San Pedro and talk with the Curator.
ME: Hi. You know who I am. One of the items on my bucket list is to see battleship guns fire with my own eyes. Here's $3 million for fuel to steam offshore for a day and a couple broadsides. Whaddya say?
Curator: With what shells? We don't have any real shells or a way to get any. And it's no fun with blanks.
Bringing the engines online would be challenging, to say the least. Probably cheaper to arrange for a tug to tow the ship a ways out to sea.
There's also the little issue that the standard donation agreement the US Navy makes with museum organizations usually stipulates that the ship is never to move under its own power again, and should they fire her up and start sailing around under her own power, the Navy can (and likely will) repossess the ship and decide how to dispose of it. Given how close
Iowa came to being scrapped the
first time around, I don't see them wanting to risk it.
those boilers havent been started in...a decade is being nice about it. filled with rust, pipes need to be opened, and have to have fuel reayd to go, looking at a week to slowly bring preasure back into an engine that has been cold for the past decade plus. all turrets have been sealed, or fixed so they can not be fired without serious time in dry dock to fix it. You would need the hull repaired, any cracks and splits need to be fixed. 3 million wouldnt even cover a hundreth of the shit needed to get the Iowa steaming under her own power. It cost four times their original asking price to modernize them under Regan's 600 ship navy. If you bankrupt Saudi Arabi, you might be able to get the Iowa restored to like new, but then what about hiring people to keep an eye on the boiler? WHat about guys to man the turrets? who will feed the ammo and gunpowder? Need to bankrupt another country to get these people trained in doing that one day trip. Would be cheaper just to actually build the Montana instead, with new tech, new engines, and so forth, but you wouldnt have the 16 inch rifles to go "Boom". so yeah.
...while you bring up a good point about the boilers, the rest of this is... not such a strong argument. When
Iowa was in mothballs, she was equipped with a galvanic anti-corrosion system that I suspect was retained when she was museumed; she also continued to get routine drydockings to clean, inspect, and repair the hull. While I don't think she's been drydocked since becoming a museum ship, I'm pretty sure that her curators will have learned from the examples of
Texas and
North Carolina and have been setting aside money from day one to fund scheduled drydock repairs (because it's cheaper to do the routine maintenance ones than to have to do the sort of emergency work Big T's had to have). Restoring her to fully operational condition would probably be about a billion dollars, tops, given the condition the Navy required she be kept in until 2009. (Remember, much of the cost of the 1980s reactivation wasn't actually in material work on the ships themselves, but rather in replacing their electronics fits with modern sensors and communications gear--those black boxes are sold by the carat--and then making sure the damn things wouldn't break every time they fired the main battery. Even then, it cost only about $400 million per ship to reactivate them, and that's with a longer period in mothballs for all of them but Jersey. And no, there weren't cost overruns--apparently, there was a hard and fast rule that the reactivations
had to cost less per ship than a new Perry-class frigate would, and that the only actual requirements be that A) the ship be able to sail safely, and B) the Tomahawk battery had to be installed and working; literally everything else,
including reactivating the main battery, was considered an optional, "if there's money left in the budget" thing.)
As for crewmen, while it has been a while, given the age of the people who were involved at the time, I suspect that one could, fairly easily, manage to round up engineering and turret crews for one of the Iowas just by mining the pool of vets who served on them in their 80s careers; most of them would be in their 40s or 50s now, but if you're just doing a one-time trip as people described, that wouldn't be too much of an issue. Note also that you could mine snipes from veterans of the four Sacramento-class AOEs, each of which was built around half of an Iowa-class engineering plant taken from the never-completed
Illinois and
Kentucky, and which decomissioned in 2004-05, meaning you could probably find snipes who are in their 30s; additional sources of snipes who'd need minimal retraining--mainly just an opportunity to read the manuals and a couple of days crawling around the machinery spaces to get familiar with the layout--would be veterans from the oil-fired carriers, which were very similar. Also, anyone who's been qualified on nuclear power plants would be another option, as the only real difference between a nuclear plant and an oil-fired steam plant is the source of heat used to boil the water. (Indeed, I know of one man who, when he was getting qualified as a
civilian nuclear plant operator, as part of his final exam, was taken to a museum that operates steam locomotives, put in the cab of one that was cold, and,
without a manual, was given two hours to get it fired up and start building up a head of steam, to prove he knew how steam plants worked.)
tl;dr While a number of your points would be valid for bringing her back into daily operation (military or not), some aren't, and others wouldn't be as big an issue for a one-time "excursion" special trip where you could get people to take time off from their real jobs to help out.