bad things. This is much more practical for torpedoes. In fact you would almost call those missiles at that point. Yup, it appears that is already a thing: http

bad things. This is much more practical for torpedoes. In fact you would almost call those missiles at that point. Yup, it appears that is already a thing: http://en.wikipedia.org/wiki/List_of_supercavitating_torpedoes http://en.wikipedia.org/wiki/List_of_supercavitating_torpedo...