The USS Clamagore SS is a submarine. What surprised me most about it was imagining what it must have been like for so many people to be working in there for days straight. It is very tight, very hot (120 degrees with the hatch open and only one engine running), and loud (that was with only one engine running). With all three engines running it must have been even more hot, and three times as loud. I assume it smelled bad in there after a few days.