Rumor has it that the barge captains that hauled the boat up the river helped themselves to a few goodies, some of which were the depth gauges. All nine H-9 diving horns are missing, as well, but the Navy may have salvaged those. Other items have been looted and broken over the years.
Originally, the boat was not intended for public viewing. An American Legion post put a ton of money together to bring it up the river for their own personal viewing pleasure. The original Post is supposedly on the verge of extinction and another Am. Legion post is supposed to start helping out with the museum.
In other news, Rick located a ton of money set aside for the Batfish, but I guess he has some policital and legal hoops to jump through. I won't disclose the amount or its location, but it's plenty to get the outer hull looking brand new.