Like what about emergency communication devices like the #blackbox's have on airplanes. Or maybe a #beacon? The #titanicsubmarine may just have lacked a proper #safety #DFMEA Design Failure Mode and Effect Analysis. ....hmmm what are the ways one could get stuck down there, and have we mitigated those risks with proper tactics... #flotation devices, #radio beacons, #emergency heat #blankets, oxygen replenishment devices, extra raccoons(yes! auto complete), and #rations. Exit suit/s. #rope?