View source for Improvement

Improvements are upgrades to equipment that increase their performance or upgrade them to better versions. Improvements are done in [[Akashi's Improvement Arsenal]], requiring [[Akashi]]. Improvement Materials {{IM}} are notably used for improvements.
*''For a comprehensive list of improvements, please refer to [https://akashi-list.me/ Akashi-List] or the List of Improvements.''

=Overview=
# Improvement levels are displayed beside equipment names.
#* They run from [[File:Icon Star.png]]'''+1''' to [[File:Icon Imp.png]] (+10).
# Improvement bonuses are '''hidden'''. The increase in stats is not reflected on ship girls' stat cards.
#* This means they do not count for [[Support Expedition]]s or for reaching certain thresholds like for [[OASW]].
#* Those bonuses work to some extent to reach regular [[Expeditions]] thresholds.
#* Some improvements on equipment can add some additional visible [[Equipment Bonuses|Fit Bonuses]].
# Equipped equipment cannot be improved.
#* There is an option to unequip the equipment from the improvement list.
# Equipment must be unlocked in order to be upgraded to a better version.
# Improvements have a chance to fail. Please see [[#Improvement Success Rates|below]].
#* '''Materials and any fodder equipment are still lost on failure.'''
#** [[Item]]s are not lost.
#* The equipment being improved is never lost.
#* It is '''recommended''' to use the guaranteed improvement toggle when dealing with expensive improvements and/or rare fodder at [[File:Icon Star.png]]'''+6''' and beyond.
#* [[Akashi Kai]] has a higher success rate than her base version.
# Improved equipment cannot be used as fodder.
# Certain conversion quests like '''[[Quests#F13|F13]]''', '''[[Quests#F14|F14]]''', '''[[Quests#F15|F15]]''', '''[[Quests#F19|F19]]''', [[Quests#F22|F22]], and [[Quests#F24|F24]] to [[Quests#F30|F30]], that do not require improved equipment, will carry over any [[File:Icon Star.png]] to the upgraded equipment.
#* This is currently the '''only''' way to obtain improved versions of the {{Equipment/Link|Tenzan Model 12 (Tomonaga Squadron)}}, {{Equipment/Link|Suisei (Egusa Squadron)}} & {{Equipment/Link|Reppuu (601 Air Group)}} (unimprovable otherwise).
# Certain conversion quests like [[Quests#F62|F62]], [[Quests#F89|F89]], [[Quests#F70|F70]], and [[Quests#F107|F107]], allow to use Improved equipment, but any [[File:Icon Star.png]] 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. <!--Note that the browser version has a '''small chance of failure''' even when the listed rate is 100%.--><!--NO SOURCE-->

{|class="wikitable" style="text-align:center"
!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% 
|}
<references/>
{{Clear}}

=Improvement Bonuses=
The bonus stats gained from improvement will vary depending on the type of equipment as well as the stat itself.
*''For calculated improvment bonuses, please refer to the [[Improvement/Reference_Charts|Reference Charts]].''

The {{:User:Chocolatecravinghobo/Sandbox/10/Icon|{{TorpedoWeapon}}|Minisub}} {{Equipment/Link|Type A Kouhyouteki|Type C Kouhyouteki|Type D Kouhyouteki Kai (Kouryuu Kai)|text=Midget Submarines|link_category=Midget Submarine}} and {{Rations}} {{EquipmentLink|Combat Ration|Combat Ration (Special Onigiri)|Canned Saury|text=Rations|link_category=Ration}} are the only equipment that do not gain any stats from improvement.
*Improving them only serves to upgrade them into their improved versions.
*Since improving a {{EquipmentLink|Combat Ration}} up to +6★ cost '''0''' screw, it is possible to farm some screw by upgrading a ration once a day while doing quest [[Quests#F18|F18]].

===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.

{|class="wikitable" style="text-align:center"
!colspan="2" rowspan="2"| Equipment Type
!colspan="2"| Day Battle
!rowspan="2"| Night Battle
!rowspan="2"| ASW
!colspan="2"| AA
!rowspan="2"| LoS
!colspan="2"| Accuracy
!colspan="2"| Evasion
|-
!Firepower
!Torpedo
!Equipment AA
!Fleet AA
!Shelling
!Torpedo
!Shelling
!Torpedo
|-
| rowspan="4"| [[:Category:Main Gun|Main Guns]]
| [[:Category:Small Gun|Small Guns]] (Red)<br>{{RedGunLight}}
| 1
| -
| 1
| -
| -
| -
| -
| 1
| -
| -
| -
|-
| [[:Category:Main High-Angle Gun|Main High-Angle Guns]] (Green)<br>{{GreenGunDP}}
| 1
| -
| 1
| -
| 0.7
| 3
| -
| 1
| -
| -
| -
|-
| [[:Category:Medium Gun|Medium Guns]] (Red)<br>{{RedGunMedium}}
| 1
| -
| 1
| -
| -
| -
| -
| 1
| -
| -
| -
|-
| [[:Category:Large Gun|Large Guns]]<br> {{RedGunHeavy}}
| 1.5
| -
| 1
| -
| -
| -
| -
| 1
| -
| -
| -
|-
| rowspan=3| Secondary Guns
| [[:Category:Secondary Gun|Surface]] (Yellow)<br>{{YellowGun}}
| 1
| -
| 1
| -
| -
| -
| -
| 1
| -
| -
| -
|-
| [[:Category:Secondary High-Angle Gun|High-Angle]] (Green)<br>{{GreenGunDP}}
| [[#Linear Increase|Linear]] 0.2
| -
| [[#Linear Increase|Linear]] 0.2
| -
| 0.7
| 3
| -
| 1
| -
| -
| -
|-
| {{EquipmentLink|5inch Twin Gun Mount (Secondary Armament) Concentrated Deployment|text=5" Twin Secondary CD}}<ref>https://twitter.com/hedgehog_hasira/status/1548329561636495373</ref><br>{{GreenGunDP}}
| [[#Linear Increase|Linear]] 0.3
| -
| [[#Linear Increase|Linear]] 0.3
| -
| 0.7?
| 3?
| -
| 1?
| -
| -
| -
|-
| colspan=2| [[:Category:Anti-Air Gun|Anti-Air Guns]]<br>{{GreenGunMG}}
| 1
| 1.2
| -
| -
| 0.7
| -
| -
| -
| 2
| -
| -
|-
| colspan="2"| [[:Category:Anti-Aircraft Fire Director|Anti-Aircraft Fire Directors]]<br>{{AntiAircraftFireDirector}}
| 1
| -
| 1
| -
| 0.7
| 2
| -
| 1
| -
| -
| -
|-
| colspan="2"| [[:Category:Torpedoes|Torpedoess]]<br>{{TorpedoWeapon}}
| 0
| 1.2
| 1
| -
| -
| -
| -
| -
| 2
| -
| -
|-
| colspan="2"| [[:Category:Recon Aircraft|Carrier Recons]]<br>{{YellowPlane}}
| -
| -
| -
| -
| -
| -
| 1.2
| -
| -
| -
| -
|-
| colspan="2"| Seaplanes ([[:Category:Reconnaissance Seaplane|Reconnaissance]] & [[:Category:Seaplane Bombers|Bomber]])<br>{{Seaplane}}
| -
| -
| -
| -
| -
| -
| 1.2
| -
| -
| -
| -
|-
| rowspan="2"| [[:Category:Radar|Radars]]<br>{{Radar}}
| [[:Category:Surface Radar|Surface Radars]]
| -
| -
| -
| -
| -
| -
| 1.25
| 1.7
| -
| -
| -
|-
| [[:Category:Air Radar|Air Radars]]
| -
| -
| -
| -
| -
| 1.5
| 1.25
| 1
| -
| -
| -
|-
| colspan="2"| [[:Category:Depth Charges|Depth Charges]]<br>{{DepthCharge}}
| 0.75
| -
| -
| 0.66
| -
| -
| -
| -
| -
| -
| -
|-
| colspan="2"| [[:Category:Sonar|Sonars]]<br>{{Sonar}}
| 0.75
| -
| -
| 0.66
| -
| -
| -
| 1.3<ref>Applies to ASW only.</ref>
| -
| -
| 1.5
|-
| colspan="2"| [[:Category:Engines|Engines]]<br>{{Turbine}}
| -
| -
| -
| -
| -
| -
| -
| -
| -
| -
| 1.5
|-
| colspan="2"| [[:Category:Shells|Shells]]<br>{{RedAmmo}}{{GreenAmmo}}
| 1
| -
| 1
| -
| -
| -
| -
| -
| 1
| -
| -
|-
| colspan="2"| [[:Category:Landing Craft|Landing Crafts]] & [[:Category:Amphibious Tank|Amphibious Tank]]<br>{{LandingCraft}}{{Amphibious Tank}}
| 1
| -
| 1
| -
| -
| -
| -
| -
| -
| -
| -
|-
| colspan="2"| [[:Category:Searchlight|Searchlights]]<br>{{Searchlight}}
| 1
| -
| 1
| -
| -
| -
| -
| -
| -
| -
| -
|-
| colspan="2"| [[:Category:Anti-Ground Artillery|Anti-Ground Artillery]]<br>{{AntiGroundArtillery}}
| 1
| -
| 1
| -
| -
| -
| -
| -
| -
| -
| -
|}
<references/>
{{Clear}}

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

{|class="wikitable" style="text-align:center"
!colspan="2"| Equipment Type
!Fighter Power
!Dive Bomb
!Torpedo
!ASW
!Armour
!Anti-Installation Bonus<ref>See [[Anti-Installation#Damage_Bonuses|Anti-Installation]] for more details.</ref>
!Expedition Bonus<ref>See [[Expeditions#Expedition_Rewards|Expedition]] for more details</ref>
|-
| rowspan="4"| Carrier-based Planes
| [[:Category:Fighters|Fighters]]<br>{{GreenPlane}}
| 0.2
| -
| -
| -
| -
| -
| -
|-
| [[:Category:Fighter-Bombers|Fighter-Bombers]]<br>{{RedPlane}}
| 0.25
| -
| -
| -
| -
| -
| -
|-
| [[:Category:Dive Bombers|Dive Bombers]] (ex. FB)<br>{{RedPlane}}
| -
| 0.2
| -
| 0.2
| -
| -
| -
|-
| [[:Category:Torpedo Bombers|Torpedo Bombers]]<br>{{BluePlane}}
| -
| -
| 0.2
| 0.2
| -
| -
| -
|-
| colspan="2"| [[:Category:Interceptors|Interceptors]]<br>{{Interceptor Fighter}}{{Interceptor Fighter2}}
| 0.2
| -
| -
| -
| -
| -
| -
|-
| rowspan="2"| [[:Category:Armor|Armor]]<br>{{ArmorEquipment}}
| Medium
| -
| -
| -
| -
| 0.2
| -
| -
|-
| Large
| -
| -
| -
| -
| 0.3
| -
| -
|-
| colspan="2"| [[:Category:Seaplane Bombers|Seaplane Bombers]]<br>{{Seaplane}}
| -
| 0.2
| -
| -
| -
| -
| -
|-
| rowspan="2"| [[:Category:Rotorcraft|Rotorcrafts]]<br>{{Autogyro}}
| Basic<ref>[[Ka-type Observation Autogyro]] and [[O Type Observation Autogyro Kai]]</ref>
| -
| -
| -
| 0.2
| -
| -
| -
|-
| Advanced<ref>[[O Type Observation Autogyro Kai Ni]], [[S-51J]] and [[S-51J Kai]]</ref>
| -
| -
| -
| 0.3
| -
| -
| -
|-
| colspan="2"| [[:Category:Landing Craft|Landing Crafts]]<br>{{LandingCraft}}
| -
| -
| -
| -
| -
| 0.02%
| 0.05%<ref>For [[Daihatsu-class Landing Craft]] and [[Toku Daihatsu-class Landing Craft]].</ref>
<br>0.02%<ref>For [[Daihatsu-class Landing Craft (Type 89 Medium Tanks & Marines)]].</ref>
|-
| colspan="2"| [[:Category:Amphibious Tank|Amphibious Tanks]]<br>{{Amphibious Tank}}
| -
| -
| -
| -
| -
| 0.03%
| 0.01%
|}
<references/>
{{Clear}}

=See Also=
[[Akashi's Improvement Arsenal]]<br>
[[Improvement/Reference Charts]]<br>
https://akashi-list.me/<br>
{{Mechanics}}