Talk:Iowa/@comment-117.20.51.194-20160301030206/@comment-21356142-20160303055017

There have only been two cases in history of a dreadnought battleship sinking to a submarine, both of which were built before 1914 (and Kongou arguably isnt a real battleship).

And on that note, the original Dreadnought sank a submarine through ramming.

So no, submarines generally aren't a major threat to battleships, who generally stalk much more vulnerable prey. (Iku also hit a battleship in her legendary spread, which as is expected of a BB, survived.)