USS COD crew participated in a weekend community festival in a Cleveland suburb. Our participation in the event for families was decidedly non-electronic (low-tech? Maybe, maybe not)... three Cartesian diving simulators. The kids put down their IPods and Gameboys and took up our challenge to "dive a sub to periscope depth." Who knew you could have this much fun (and learn a bit about bouyancy) with an empty pop bottle, some water, and an eyedropper? This kid was among the best and understood the concept of controlled dives! As in bouncing off the bottom is not an option for subs!
The picture below shows the COD display... the depthcharge and Mk. 43 torpedo were getting cabin fever in Building 13 and needed to get out for a morning.