Managed to max out the geiger counter, find the bottom of the lake, check the file a few times, then declared myself not fit to ever pilot anything bigger than a car. I've played a game called barotrauma before and while it isn't a game about piloting a submarine one of the main things I did in it was pilot a submarine. I still managed to get into a lot of trouble piloting the submarine in that game even though it was 2D so one could imagine how a 3D environment just added more layers of confusion. So it was fun until the charm wore off.