The USS Torsk (SS-423), a
Tench class sub, is a museum piece in Baltimore. I live in VA, but I take a lot of trips up to Baltimore for medical care at Johns Hopkins. Yesterday after an appt, my wife and I went down to the Inner Harbor for lunch. I really wanted to tour the Torsk, but I wasn't in shape for it. I hope that in the near future I can take the tour (and a ton of photos).
The Torsk has the distinction of sinking the last Japanese warships during WWII (two coastal defense frigates on the day before the cease fire was declared). It was later upgraded under the Fleet Snorkel program and again upgraded as a guidance boat for the Regulus missile system. For historical purposes, I'd rather tour a sub in WWII configuration... but I'm still excited about touring the Torsk.
The only other sub I've toured was the USS Growler (SSG-577), the Regulus launch boat now permanently on display in NYC as a part of the Intrepid museum.
Anyhow... fairly off topic but here are some links for the Torsk if anyone is planning their vacations in the area.

Lotsa pictures in the links too.
Baltimore Maritine Museum
Official Torsk site
Darn shame SH4 didn't come with the Tench class as an option...
-m