A closer look
German submarine U-1206 sank during World War II after the captain improperly operated its highly complex deep-water flushing toilet, causing pressurized seawater and human waste to flood the battery compartment and generate lethal chlorine gas. There is arguably no worse way for a fearsome instrument of naval warfare to meet its demise than a literal plumbing catastrophe triggered by someone not reading the manual for the commode. It serves as a beautiful, albeit tragic, reminder that no matter how much advanced engineering you pack into a steel tube, the human digestive tract will always find a way to ruin everything






