• +
• 

  Air Groups Modification 1
  Air squadron return speed	+20 %

• 

  Auxiliary Armaments Modification 1
  Secondary battery survivability	+100 %
  AA mount survivability	+100 %

• 

  Damage Control Party Modification 1
  Increases the action time of the Damage Control Party and Fast Damage Control Team consumables.
  Consumable action time	+40 %

• +
• 

  Damage Control System Modification 1
  Risk of catching fire	-5 %
  Risk of flooding	-3 %

• 

  Aircraft Engines Modification 1
  Squadron engine boost duration	+10 %

• +
• 

  Secondary Battery Modification 1
  Maximum secondary battery shell dispersion	-20 %
  Secondary battery firing range	+20 %

• 

  Torpedo Bombers Modification 1
  Torpedo bomber attack time	5 s

• 

  Attack Aircraft Modification 1
  Attack aircraft attack time	2 s

• 

  Aerial Torpedoes Modification 1
  Aerial torpedo speed	+5 %

• +
• 

  Damage Control System Modification 2
  Fire extinguishing time	-15 %
  Flooding recovery time	-15 %

• 

  Attack Aircraft Modification 2
  Attack aircraft HP	+7.5 %

• 

  Torpedo Bombers Modification 2
  Torpedo bomber HP	+7.5 %

• 

  Bombers Modification 2
  Bomber HP	+7.5 %

• 

  Airstrike Modification 1
  Depth charge damage	+15 %
  Depth charge damage	+15 %
  Depth charge damage	+15 %
  Depth charge damage	+15 %
  Airstrike armament reload time	-20 %
  Airstrike aircraft HP	+25 %

• +
• 

  Flight Control Modification 1
  Does not work with tactical squadrons
  Maximum number of aircraft of each type on the deck	+100 %
  Aircraft preparation time	-5 %

• 

  Concealment System Modification 1
  Dispersion of shells fired by enemies attacking your ship	+5 %
  Ship's detectability range	-10 %
  Ship's detectability range	-10 %
  Ship's detectability range	-10 %
  Ship's detectability range	-10 %
  Squadron detectability range	-10 %
  Ship detectability for submarines when underwater	-10 %

• 

  Squadron Consumables Modification 1
  Squadron consumable action time	+50 %