Eight years ago, I was staying with my future husband for spring break in Charleston, SC. We went down to the docks I guess you could call it, and we watched this Civil War submarine be towed back to shore. Read up on it here: http://www.military.com/news/article/fate-of-civil-war-sub-a-cold-case-file.html?ESRC=navy.nl
I am thinking field trip might be in order. They have a model on display as well as tours to check out the actual boat.