No, no - it's completely plausible for a nuclear powered sub to get stuck in at most 150 meters of water and have all its life support systems fail badly enough

No, no - it's completely plausible for a nuclear powered sub to get stuck in at most 150 meters of water and have all its life support systems fail badly enough to kill a couple dozen sailors. Also, China simply hasn't mastered the complex technology to remove CO2/generate O2 in an emergency - nuclear reactors, sure, but a big canister of lithium hydroxide and some oxygen candles are completely beyond them. The whole article is dumb af. Maybe a sub bottomed out or smacked into something and had to head back to port - no way they lost a whole boat.