World of Warships update 0.6.0 brought tremendous, and much needed, changes to Captain Skills. They've reduced the skill "tree" from five levels to four, and broadened it to eight columns in four categories. This means captains will have a top skill like Concealment Expert with only 10 points, and will be nearly twice as skilled at maximum points than previously possible. Does that may a difference with the Shiratsuyu? You bet your arse it does.