How do I get a tour of a submarine?

teh Museum of Sciencew and Industry has a captured Greman U-boat that you can take a tour through and rea all about it is pretty awesome since they rehabed it and made a brand new outside display of it

There's a decommissioned submarine on the Arkansas River in Little Rock, Arkansas. It's not as cool as a real live operational one of course, but it could give them some idea. Little Rock's also got a pretty cool downtown "River Market" district, the MacArthur Military museum (General McArthur was raised there), a Discovery Museum for any kids you may have in the party. There's some beautiful parks in the state too if you want to make a road trip out of it. I recommend Petit Jean State Park.

http://www.aimm.museum/

Not sure what part of the country you are in so...

Norfolk used to put a boat on display every weekend, check with the PA people there to see if they still do & when a sub might be on the schedule.

Or try the other big boatyards - especially the big sub bases on whichever coast is nearest.

There are a couple of WWII era subs on display around the country - my favorite is the Bowfin Museum at Pearl Harbor.

I'm betting you can't unless you go to one that has been decommissioned and turned into a museum. All of the new ones have way too much classified instruments and materials to just allow a family to get a tour of one.