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Improvement

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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 Instant construction are needed for all improvements except Battle Ration improvements.

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

Overview

  1. Improvement levels are displayed beside equipment names.
    • They run from ★+1 to ★MAX (+10).
  2. Improvement bonuses are hidden. The increase in stats are not reflected on the stat cards of ship girls.
  3. Equipped equipment cannot be improved.
    • There is an option to unequip the equipment from the improvement list.
  4. Equipment must be unlocked in order to be upgraded to a better version.
  5. Improvements have a chance to fail. Please see below for details.
    • Materials and any fodder equipment are still lost on failure.
    • You will not lose the actual equipment being improved.
    • It is highly recommended you 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.
  6. Improved equipment cannot be used as fodder.
  7. Certain conversion quests like F15 and F29 that do not require ★MAX equipment will carry over any improvements to the upgraded equipment.

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 you obtain her to maximise your improvement success rates. The data below is sourced from KanColle Kai. Note that the browser version has a small chance of failure even when the listed rate is 100%.

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

  • [math]\bigstar[/math] is the improvement level of the equipment.
  • [math]\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 Anti-Air Line of Sight Accuracy Evasion
Firepower Torpedo Equipment AA Fleet AA Shelling Torpedo Shelling Torpedo
Main Guns Small Caliber (Red)
Small Caliber Main Gun
1 - 1 - - - - 1 - - -
Small Caliber High-Angle (Green)
Dual-purpose Gun
1 - 1 - 0.7 3 - 1 - - -
Medium Caliber
Intermediate Caliber Main Gun
1 - 1 - - - - 1 - - -
Large Caliber
Large Caliber Main Gun
1.5 - 1 - - - - 1 - - -
Secondary Guns Normal (Yellow)
Auxiliary Gun
1 - 1 - - - - 1 - - -
High-Angle (Green)
Dual-purpose Gun
Linear 0.2 - Linear 0.2 - 0.7 3 - 1 - - -
Anti-Air Guns
Anti-aircraft Point-defense Weapon
1 1.2 - - 0.7 - - - 2 - -
Anti-Aircraft Fire Director
Anti Aircraft Fire Director
1 - 1 - 0.7 2 - 1 - - -
Torpedoes
Torpedo-based Weapon
0 1.2 1 - - - - - 2 - -
Carrier-Based Reconnaisance
Reconnaissance Aircraft
- - - - - - 1.2 - - - -
Seaplanes (Reconnaissance & Bomber)
Seaplane
- - - - - - 1.2 - - - -
RADAR
RADAR
LOS[1] - - - - - - 1.25 1.7 - - -
Anti-Air[2] - - - - - 1.5 1.25 1 - - -
Depth Charges
Depth Charges
0.75 - - 0.66 - - - - - - -
SONARs
SONAR
0.75 - - 0.66 - - - 1.3[3] - - 1.5
Engines
Propulsion Systems
- - - - - - - - - - 1.5
Shells
Armor Piercing AmmunitionSanshiki "Beehive" Ammunition
1 - 1 - - - - - 1 - -
Landing Craft
Landing Craft Amphibious Tank
1 - 1 - - - - - - - -
Searchlight
Searchlight
1 - 1 - - - - - - - -
Anti-Ground Rocket
Anti-Ground Artillery
1 - 1 - - - - - - - -
  1. With LoS View Range greater than 5.
  2. With Anti-Air Anti-Air stat.
  3. 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
Fighter
0.2 - - - - - -
Fighter-Bomber
Dive Bomber
0.2 - - - - - -
Torpedo Bomber
Torpedo Bomber
- - 0.2 0.2 - - -
Land-Based Fighter/Interceptor
Interceptor Fighter Interceptor Fighter
0.2 - - - - - -
Bulge
Armor add-on
Medium - - - - 0.2 - -
Large - - - - 0.3 - -
Seaplane Bombers
Seaplane
- 0.2 - - - - -
Auto-gyro
Autogyro
Basic[3] - - - 0.2 - - -
Advanced[4] - - - 0.3 - - -
Landing Craft Daihatsu
Landing Craft
- - - - - 0.02% 0.05%[5]


0.02%[6]

Amphibious Tank
Amphibious Tank
- - - - - 0.03% 0.01%

See Also

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