> They all timing ticking bomb, since most (all by now) are nuclear reactor propelled. When, after posting your comment, you then go to read the article, you w

> They all timing ticking bomb, since most (all by now) are nuclear reactor propelled. When, after posting your comment, you then go to read the article, you will discover that the ARA San Juan is a diesel-electric submarine. It's in the second paragraph. Relatedly, modern diesel submarines that use air-independent propulsion are significantly quieter than nuclear submarines while being cheaper to field, which fills a strategic role more effectively than the nuclear submarines would in replacing them. That the United States fields an all-nuclear submarine fleet does not suggest that the rest of the world does or is going in that direction. (edit: and, further, something like eight or nine nuclear submarines have already sunk and while not trivial problems, they are not the gasping danger you imply.)