I preview a couple skills that work quite well with Japanese Battleships and other battleship lines. Fire Prevention, Catapult Fighter, and HEAP all are nice addition that will improve your effectiveness in battleships. HEAP allows HE to penetrate, it improves your damage output against bow on battleships and destroyers. Extra fighter overhead is nice to AA protection and scouting torpedoes/around islands. Fire prevention was buffed with a interesting change to help reduce fire damage taken. Hope this is interesting and hope you have a wonderful day!
Tier VII Japanese Battleship Nagato Replay