Great place to visit. Museum has interesting, and educational, materials. Watch the video before you tour the submarine. Very hands self-tour of sub. Make sure to look through the periscope. You can sit in the various places the crew would have been while operating and listen to what was going on. At various points there are buttons and when you press great audio explaining what you are seeing but also with oral history / little interviews with men who served on her. Even the cook's 'secret ingredient' to the newburg sauce is explained! I'd suggest that you watch the video in the museum before you go onto the submarine. We'd driven past many times on our way into Portsmouth but today we stopped and it was well worth it. Note - unlike many museum ships this one is set up to encourage you to touch and really become a part of what you are seeing.