PanzerDevastator1803

If the formula from the wiki is correct, fire prevention is almost useless as it lowers fire starting chance of each shot only by 7%, while demolition expert increase it by a really larger amount. I haven't played IJN cruisers yet, but on US line i prefered the perk that increase turrets turning rate. Also torpedoes one could be an intresting choice, if you heavily rely on them. My 2 cent (from a player with really few matches)