Introduction

Improvements are upgrades to equipment that increase their performance or upgrade them to better versions. Akashi is required to improve equipment. Improvements are done in Akashi's Improvement Arsenal. Improvement Materials   are needed for all improvements except Battle Ration improvements.

For a comprehensive list of improvements, please refer to Akashi-List or the List of Improvements.

Overview

  1. Improvement levels are displayed beside equipment names.
    • They run from  +1 to   (+10).
  2. Improvement bonuses are hidden. The increase in stats is not reflected on ship girls' stat cards.
  1. Equipped equipment cannot be improved.
    • There is an option to unequip the equipment from the improvement list.
  2. Equipment must be unlocked in order to be upgraded to a better version.
  3. Improvements have a chance to fail. Please see below.
    • Materials and any fodder equipment are still lost on failure.
    • The equipment being improved is never losed.
    • It is highly recommended to use the guarateed improvement toggle when dealing with expensive improvements and/or rare fodder at  +6 and beyond.
    • Akashi Kai has a higher success rate than her base version.
  4. Improved equipment cannot be used as fodder.
  5. Certain conversion quests like F13, F14, F15, F19, F22, and F24 to F30, that do not require improved equipment, will carry over any   to the upgraded equipment.
  6. Certain conversion quests like F62, F89, F70, and F107, allow to use Improved equipment, but any   are lost during conversion.

Improvement Success Rates

Akashi's level does not affect improvement rates. However, her remodel status does. It is highly recommended that she be remodeled to Kai as soon as possible, to maximize improvement success rates. The data below is sourced from KanColle Kai.

Modification Level 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★ Upgrade
Akashi 100% 100% 100% 100% 95% 90% 80% 77% 72% 60% 50%
Akashi Kai 100% 100% 100% 100% 100% 95% 90% 82% 77% 67% 62%

Improvement Bonuses

For calculated improvment bonuses, please refer to the Reference Charts.

Square Rooted Bonus

Bonuses to attack power (day shelling, night shelling, torpedo, ASW), anti-air, LoS, accuracy and evasion are all a function of the square root of the improvement level. The bonus can be calculated by:

[math]\displaystyle{ \text{Bonus}_\text{stat} = \sum_{\text{All equips}} \text{Mod}_\text{equip} \sqrt{\bigstar} }[/math]

  • [math]\displaystyle{ \bigstar }[/math] is the improvement level of the equipment.
  • [math]\displaystyle{ \text{Mod}_\text{equip} }[/math] is the equipment modifer for that stat. Please refer to the table below for details.
Equipment Type Day Battle Night Battle ASW AA LoS Accuracy Evasion
Firepower Torpedo Equipment AA Fleet AA Shelling Torpedo Shelling Torpedo
Main Guns Small Guns (Red)
 
1 - 1 - - - - 1 - - -
Main High-Angle Guns (Green)
 
1 - 1 - 0.7 3 - 1 - - -
Medium Guns (Red)
 
1 - 1 - - - - 1 - - -
Large Guns
 
1.5 - 1 - - - - 1 - - -
Secondary Guns Surface (Yellow)
 
1 - 1 - - - - 1 - - -
High-Angle (Green)
 
Linear 0.2 - Linear 0.2 - 0.7 3 - 1 - - -
Anti-Air Guns
 
1 1.2 - - 0.7 - - - 2 - -
Anti-Aircraft Fire Directors
 
1 - 1 - 0.7 2 - 1 - - -
Torpedoess
 
0 1.2 1 - - - - - 2 - -
Carrier Recons
 
- - - - - - 1.2 - - - -
Seaplanes (Reconnaissance & Bomber)
 
- - - - - - 1.2 - - - -
Radars
 
Surface Radars - - - - - - 1.25 1.7 - - -
Air Radars - - - - - 1.5 1.25 1 - - -
Depth Charges
 
0.75 - - 0.66 - - - - - - -
Sonars
 
0.75 - - 0.66 - - - 1.3[1] - - 1.5
Engines
 
- - - - - - - - - - 1.5
Shells
  
1 - 1 - - - - - 1 - -
Landing Crafts & Amphibious Tank
  
1 - 1 - - - - - - - -
Searchlights
 
1 - 1 - - - - - - - -
Anti-Ground Artillery
 
1 - 1 - - - - - - - -
  1. Applies to ASW only.

Linear Bonus

Bonuses to fighter power, dive bomb, plane torpedo, plane ASW, armour, anti-installation bonus and expedition bonus just have a linear growth. The bonus per improvement level is given by the table below.

Equipment Type Fighter Power Dive Bomb Torpedo ASW Armour Anti-Installation Bonus[1] Expedition Bonus[2]
Carrier-based Planes Fighter
 
0.2 - - - - - -
Fighter-Bomber
 
0.25 - - - - - -
Dive Bomber (ex. FB)
 
- 0.2 - 0.2 - - -
Torpedo Bomber
 
- - 0.2 0.2 - - -
Land-Based Fighter/Interceptor
  
0.2 - - - - - -
Bulge
 
Medium - - - - 0.2 - -
Large - - - - 0.3 - -
Seaplane Bombers
 
- 0.2 - - - - -
Auto-gyro
 
Basic[3] - - - 0.2 - - -
Advanced[4] - - - 0.3 - - -
Landing Craft Daihatsu
 
- - - - - 0.02% 0.05%[5]


0.02%[6]

Amphibious Tank
 
- - - - - 0.03% 0.01%

See Also

Akashi's Improvement Arsenal
Improvement/Table
Improvement/Reference Charts
Improvement Priority
https://akashi-list.me/