Anti-Air Fire

Introduction

This page is to provide detail on how plane shoot down is calculated during the Fleet Air Defense phase of aerial combat.

Fleet Air Defense

Adjusted Anti-Air

There are two adjusted anti-air values that are taken into account when calculating shoot down; the ship adjusted AA and fleet adjusted AA.

[math]\displaystyle{ \text{Adj AA}_\text{ship} = \text{AA}_\text{ship} + \sum_{\text{All Slots}} \left( \text{Mod}_\text{equipS} \times \text{AA}_\text{equip} \right) + \left( \text{Mod}_\text{ImprS} \times \sqrt{\bigstar} \right) }[/math]

• [math]\displaystyle{ \text{AA}_\text{ship} }[/math] is the base of the ship.
• [math]\displaystyle{ \text{Mod}_\text{equipS} }[/math] is the ship anti-air equipment modifier. See the table below for details.
• [math]\displaystyle{ \text{AA}_\text{equip} }[/math] is the base of the equipment.
• [math]\displaystyle{ \text{Mod}_\text{ImprS} }[/math] is the ship anti-air equipment improvement modifier.
  • High-Angle Mounts: [math]\displaystyle{ 3.0 }[/math]
  • Anti-Air RADARs: [math]\displaystyle{ 0 }[/math]
  • Anti-Air Guns: [math]\displaystyle{ 4.0 }[/math]
• [math]\displaystyle{ \bigstar }[/math] is the level of Improvement.

[math]\displaystyle{ \text{Adj AA}_\text{fleet} = 1.54 \times \left[ \text{Mod}_\text{formation} \times \sum_{\text{All Ships}} \left( \sum_{\text{All Slots}} \left( \text{Mod}_\text{equipF} \times \text{AA}_\text{equip} \right) + \left( \text{Mod}_\text{ImprF} \times \sqrt{\bigstar} \right) \right) \right] }[/math]

• [math]\displaystyle{ \text{Mod}_\text{formation} }[/math] is the formation modifier.
  • Line Ahead/Echelon/Line Abreast/Combined Fleet Cruising 2/Combined Fleet Cruising 4: [math]\displaystyle{ 1.0 }[/math]
  • Vanguard/Combined Fleet Cruising 1: [math]\displaystyle{ 1.1 }[/math]\
  • Double Line: [math]\displaystyle{ 1.2 }[/math]
  • Combined Fleet Cruising 3: [math]\displaystyle{ 1.5 }[/math]
  • Diamond: [math]\displaystyle{ 1.6 }[/math]
• [math]\displaystyle{ \text{Mod}_\text{equipF} }[/math] is the fleet anti-air equipment modifier. See the table below for details.
• [math]\displaystyle{ \text{AA}_\text{equip} }[/math] is the base of the equipment.
• [math]\displaystyle{ \text{Mod}_\text{ImprS} }[/math] is the fleet anti-air equipment improvement modifier.
  • High-Angle Mounts: [math]\displaystyle{ 3.0 }[/math]
  • Anti-Air RADARs: [math]\displaystyle{ 1.5 }[/math]
  • Anti-Air Guns: [math]\displaystyle{ 0 }[/math]
• [math]\displaystyle{ \bigstar }[/math] is the level of Improvement.

Fixed Shoot Down

[math]\displaystyle{ \text{Shootdown}_\text{fixed} = \frac{ \left[ \text{Mod}_\text{equipped} \times \frac{\text{AA}_\text{ship} + \text{Adj AA}_\text{fleet}}{\text{Mod}_\text{equipped}} \right] \times \text{Mod}_\text{AACI} \times \text{Mod}_\text{CF}}{10} }[/math]

• [math]\displaystyle{ \text{Mod}_\text{equipped} }[/math] is the modifier if the ship has any anti-air equipment equipped.
  • It is [math]\displaystyle{ 2 }[/math] if she is equipped with something and [math]\displaystyle{ 1 }[/math] if not.
• [math]\displaystyle{ \text{Mod}_\text{AACI} }[/math] is the anti-air cut-in modifier. See below for details.
• [math]\displaystyle{ \text{Mod}_\text{CF} }[/math] is the combined fleet modifier. It is [math]\displaystyle{ 1 }[/math] otherwise.
  • Main Fleet: [math]\displaystyle{ 0.72 }[/math]
  • Main Fleet: [math]\displaystyle{ 0.48 }[/math]

Proportional Shoot Down

[math]\displaystyle{ \text{Shootdown}_\text{proportional} = \frac{ \left[ \text{Mod}_\text{equipped} \times \frac{\text{AA}_\text{ship}}{\text{Mod}_\text{equipped}} \right] \times \text{Mod}_\text{CF}}{400} \times \text{N}_\text{planes} }[/math]

• [math]\displaystyle{ \text{Mod}_\text{equipped} }[/math] is the modifier if the ship has any anti-air equipment equipped.
  • It is [math]\displaystyle{ 2 }[/math] if she is equipped with something and [math]\displaystyle{ 1 }[/math] if not.
• [math]\displaystyle{ \text{Mod}_\text{CF} }[/math] is the combined fleet modifier. It is [math]\displaystyle{ 1 }[/math] otherwise.
  • Main Fleet: [math]\displaystyle{ 0.72 }[/math]
  • Main Fleet: [math]\displaystyle{ 0.48 }[/math]
• [math]\displaystyle{ \text{N}_\text{planes} }[/math] is the current plane count of the targeted slot.