TIL In 1945, the German submarine U-1206 was sunk after a toilet malfunctioned, resulting in seawater flooding into the hull, which when coming into contact with a battery, created chlorine gas, forcing the submarine to resurface. At the surface, it was discovered and sunk by Allied Forces.

Read more: https://en.wikipedia.org/wiki/German_submarine_U-1206

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  1. >U-1206 was one of the late-war boats fitted with new deepwater high-pressure toilets which allowed them to be used while running at depth. Flushing these facilities was an extremely complicated procedure and special technicians were trained to operate them. Incorrectly opening valves in the wrong sequence could result in waste or seawater flowing back into the hull.

    I’m an engineer and this part makes my head hurt. They installed a toilet that was so complicated that you needed a specially trained technician to operate it? Fuck me.

    >On 14 April 1945, **24 days before the end of World War II in Europe**, while U-1206 was cruising at a depth of 200 feet (61 m), eight nautical miles (15 km; 9.2 mi) off Peterhead, Scotland, misuse of the new toilet caused large amounts of seawater to flood the boat.

    And this. lol.

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