first of all good day , I have 1 issue that I would like to suggest.
1- Fog Mechanics: Only dd's and cl's do the fogging in the game , if only we could add and remove it manually in dry dock. The type of ship we want. After all , battleships can also fogging. While expanding the in-game usage area, their duration can be adjusted again to improve it. For example
Battleships: 30sec active , 7,5 min cd
CL , CA , BC: 45 sec active , 6 min cd
DD's : 1 min active , 5 min dc
As for the qualifications , they can fall out of detection(out of radar and hydro range) , they can be detected again if fire is opened. These are my personal opinions and maybe some of you might like it.