The New Stealth Submarines Explained (Quick Guide)

The latest submarines may increasingly feature a new angular outer hull. For example the German Ttpe-212CD. This has to do with stealth. Let me try to briefly explain... Info on the Type-212CD https://www.navalnews.com/naval-news/2021/09/radical-new-stealth-submarine-type-212cd-will-be-much-larger/