Where does the smoke from a submarines engine go?#fyp#submarine

When a submarine dives deep into the ocean, where does all the engine smoke go? Here's the truth. There is no smoke at all. Traditional diesel engines do produce exhaust, but submarines only use them when they're on the surface or just below it. At that point, they use a device called a snorkel, a pipe that sticks out above the water to pull in fresh air while pushing exhaust gas back into the atmosphere. But once the submarine dives deep, everything changes. It can stay underwater for months at a time, sometimes five to six months without surfacing. And during that time, it switches to a completely different power system. Electric motors, massive battery packs. These systems don't burn fuel, which means no smoke, no exhaust. They provide quiet, stealthy power, perfect for staying hidden in the deep ocean. Only when the batteries run low does the submarine return closer to the surface to recharge using its diesel generators. So that's why deep underwater you'll never see any engine smoke. Would you trust a machine that can stay hidden underwater for months?