Repetition is the mother of knowledge!
As the true aces of the deep, in the game have the opportunity to learn to maneuver, when destroyers bombarded with depth charges, even if they kill multiple times!
And to aim and shoot right on target!
As said Capt without these things, there can not be reality
I think in experience points will be easier,you slide destroyers!
You can manually change any of the values in the menu Cfg/Basic>renown
It has written on this topic!
Or ready to take the file Basic from any mod