As far as I know, there is no good way to fortify a submarine base against a nuclear weapon (which is one of the reasons why Object 825 GTS is a museum - some o

As far as I know, there is no good way to fortify a submarine base against a nuclear weapon (which is one of the reasons why Object 825 GTS is a museum - some of the other ones being that it's on Ukrainian soil and that it's easy to trap submarines in the Black Sea, restricting their utility - Russia operates nuclear submarines only out of the Arctic and the Pacific).