Toilets Get Clogged
On a submarine, toilets get blocked in much the same way as at home. Water from the bathrooms is supposed to be pumped into three sanitary tanks on board the ship, according to plan.
If the valve line is not working correctly, water would end up going places it’s not supposed to, like flowing out of your kitchen sink. And if you’re curious about what happens to all that wastewater once it goes down the drain, it gets dumped into the ocean.