Talk:Submarine Radar & Waterproof Telescope/@comment-27999059-20170212222441/@comment-1915363-20170213152810

AACI and shelling royally sucks on a WW2 era submarines, and they could barely detect, let alone hit other submarines. Even if the oft chance you'll need to get a submarine to find another submarine, doing that with radar is basically impossible unless if you have an extremely powerful radar, which also doubles as a giant radio searchlight that gives away your position to surface ships.

One possibility is that they make them invincible in yasen nodes, but I wouldn't really count on that.