View source for Improvement

{{PortMechanicsPortal}}
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.
*''See the full list of improvable equipment [[:Category:Improvable Equipment|here]] (this omit the equipment not improvable but obtainable already improved) .
*''See the full list of ship Helpers [[Improvement/Helper|here]].
*''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 {{Star}}'''+1''' to {{MaxStar}} (+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]].
#** This works on an equipment-to-equipment and ship-to-ship basis with no general rule.
# 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 ({{DM}}{{IM}}) 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 {{Star}}'''+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 '''{{Q|F13}}''', '''{{Q|F14}}''', '''{{Q|F15}}''', '''{{Q|F19}}''', {{Q|Fm1}}, and {{Q|F24}} to {{Q|F30}}, that do not require improved equipment, will carry over any {{Star}} 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 {{Q|F62}}, {{Q|F89}}, {{Q|F70}}, and {{Q|F107}}, allow to use improved equipment, but any {{Star}} 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.
*Most improved stats will come as decimal numbers due to the use as base decimals and how [[wikipedia:Square root|square roots]] work.
*It is important to note that '''decimals must not be discarded in favor of whole numbers''', as stats will be multiplied by various formulas anyway, to finally be rounded down/up. 
*''For calculated improvment bonuses, please refer to the [[Improvement/Categories|Categories Charts]] or [[Improvement/Reference_Charts|Reference Charts]].''

The improvement effects are unknown for some equipment types/cases.

==Square Rooted Bonus==
Most bonuses are all a function of the square root of the improvement level. The bonus can be calculated by:
{|style="padding:10px; margin:20px; border:1px solid orange; border-radius:10px"
|valign="center"|  <math>\text{Bonus}_\text{stat} = \sum_{\text{All equips}} \text{Mod}_\text{equip} \sqrt{\bigstar}</math>
|}

;With
* <math>\bigstar</math> is the improvement level of the equipment.
* <math>\text{Mod}_\text{equip}</math> is the equipment modifier 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|Fighter Power
!rowspan=2|LoS
!colspan=4|Accuracy<ref>[https://docs.google.com/spreadsheets/d/183MFdMfBS7Oc3doCZYyI-R1jxDaCZ-Y9wMt_HW8PFEg/edit#gid=0]</ref>
!colspan=2|Evasion
|-
!Firepower!!Torpedo
!Ship!!Fleet
!Day!!Night!!Torpedo!!ASW
!Shelling!!Torpedo
|-
| rowspan=3|[[Main Gun]]s
|([[Very Large Caliber Main Gun|Very]]) [[Large Caliber Main Gun|Large]]<br>{{Large Gun}}{{Very Large Gun}}
| 1.5|| -|| 1|| -|| -|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
|[[Medium Caliber Main Gun|Medium]]/[[Small Caliber Main Gun|Small]] (Red)<br>{{Med Gun}}{{Light Gun}}
| 1|| -|| 1|| -|| -|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
|[[:Category:Main High-Angle Guns|HA]] (Green)<br>{{Main Green}}
| 1|| -|| 1|| -||rowspan=3| 2<ref name="aa1">For base {{AA}} AA ≤ 7</ref><br>3<ref name="aa2">For base {{AA}} AA ≥ 8</ref>||rowspan=3| 2<ref name="aa1"/><br>3<ref name="aa2"/>|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
| rowspan=4|[[Secondary Gun]]s
|{{EquipmentLink|90mm Single High-angle Gun Mount|text=90 mm Single HA}}<br>{{Sec Green}}
| 1|| -|| 1|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
|(Large) [[:Category:Secondary High-Angle Guns|HA]] (Green)<br>{{Sec Green}} {{Large Sec Green}}
|rowspan=2| [[#Linear Bonus|Linear]] 0.2<ref name="fp1">For base {{Firepower}} FP ≤ 3</ref><br>[[#Linear Bonus|Linear]] 0.3<ref name="fp2">For base {{Firepower}} FP ≥ 5</ref>|| -||rowspan=2| [[#Linear Bonus|Linear]] 0.2<ref name="fp1"/><br>[[#Linear Bonus|Linear]] 0.3<ref name="fp2"/>|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
|Surface (Yellow)<br>{{Sec Gun}}
| -|| -|| -|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
|{{EquipmentLink|15.2cm Single Gun Mount|text=15.2 cm Single}} & {{EquipmentLink|OTO 152mm Triple Rapid Fire Gun Mount|text=OTO}}<br>{{Sec Gun}}
| 1|| -|| 1|| -|| -|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
| colspan=2|[[Anti-Aircraft Fire Director]]s<br>{{AAFD}}
| 1|| -|| 1|| -|| 2<ref name="aa1"/><br>3<ref name="aa2"/>|| 2<ref name="aa1"/><br>3<ref name="aa2"/>|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
| colspan=2|[[AA Gun|Anti-Air Guns]]<br>{{AA Gun}}
| 1|| 1.2|| -|| -|| 4<ref name="aa1"/><br>6<ref name="aa2"/>|| -|| -|| -|| -|| -|| 2|| -|| -|| -
|-
| colspan=2|[[Torpedo]]es<br>{{TorpedoWeapon}}
| -|| 1.2|| 1|| -|| -|| -|| -|| -|| -|| 1.3|| 2|| -|| -|| -
|-
| colspan=2|[[Midget Submarine]]s<br>{{Minisub}}
| -|| -|| 1|| -|| -|| -|| -|| -|| -|| 1.3|| -|| -|| -|| -
|-
| colspan=2|(Large) [[Carrier Recon]]s/[[Large Flying Boat]]s<br>{{Carrier Recon}}{{Large Recon}}{{LFB}}
| -|| -|| -|| -|| -|| -|| -|| 1.2|| -|| -|| -|| -|| -|| -
|-
| colspan=2|[[LB Recon]]s<br>{{Land-Based Recon}} 
| -|| -|| -|| -|| -|| -|| -|| 1.2?<ref>LoS might be affected like other recons, but it is not measurable, due to how LBAS work.</ref>|| -|| -|| -|| -|| -|| -
|-
| rowspan=2|[[Seaplane]]s<br>{{Seaplane}}{{Night Recon}}
|[[SPR|Recons]]
| -|| -|| -|| -|| -|| -|| -|| 1.2|| -|| -|| -|| -|| -|| -
|-
|[[SPB|Bombers]]
| -|| -|| -|| -|| -|| -|| -|| 1.1|| -|| -|| -|| -|| -|| -
|-
| colspan=2|[[Rotorcraft]]/[[Liaison Aircraft]]<br>{{Autogyro}}{{ASWPlane}}
| -|| -|| -|| [[#Linear Bonus|Linear]]|| -|| -|| -|| -|| 1?<ref name="?">Unconfirmed yet</ref>|| 1.3?<ref name="?"/>|| -|| -|| -|| -
|-
| rowspan=2|[[Land Based Bomber]]s
|[[LB Attacker|Attackers]]/[[LB Assault|Assault]]/[[LB Patrol|ASW]]/[[LB Heavy|Heavy Bombers]]<br>{{LB Attacker}}{{LB Assault}}{{LB ASW}}{{LB Heavy}}
| -||{{ToolTip|0.7*|both {{Torpedo}} and {{Dive}}[https://twitter.com/Divinity_123/status/1659942246353891329]}}|| -|| -|| -|| -||rowspan=2| 0.5|| -|| -|| -|| -|| -|| -|| -
|-
|{{EquipmentLink|Bomb-carrying Type 1 Fighter Hayabusa Model III Kai (65th Squadron)|text=Hayabusa bomber}}<br>{{IconText|{{LB Fighter 2}}|bomber}} 
| -|| {{ToolTip|0.7*|only against DD and Installation [https://twitter.com/Divinity_123/status/1659942251257004035] }}|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -
|-
| colspan=2|[[Radar]]s<br>{{Radar}}
| -|| -|| -|| -|| -|| 0<ref>For [[Surface Radar]]s</ref><br>1.5<ref>For [[Air Radar]]s</ref>|| -|| 1.25<ref>For [[Small Radar]]s</ref><br>1.4<ref>For ([[Very Large Radar|Very]]) [[Large Radar]]s</ref>|| 1<ref>For pure [[Surface Radar]]s & Large Dual Purpose Radars</ref><br>1.7<ref>For pure [[Air Radar]]s & Small Dual Purpose Radars</ref>|| 1.3<ref>For base {{Hit}} Acc ≤ 2</ref><br>1.6<ref>For base {{Hit}} Acc ≥ 3</ref>|| -|| -|| -|| -
|-
| colspan=2|[[Depth Charge]]s<br>{{DepthCharge}}
| 0.75|| -|| -||rowspan=2| 0.67|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -
|-
| colspan=2|{{EquipmentLink|Type 95 Depth Charge|text=T95 DC}} & {{EquipmentLink|Type 2 Depth Charge|Type 2 Depth Charge Kai 2|text=T2/K2 DC}}<br>{{DepthCharge}}
| -|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -
|-
| colspan=2|[[Sonar]]s<br>{{Sonar}}
| 0.75|| -|| -|| 0.67|| -|| -|| -|| -|| -|| -|| -|| 1.3|| -|| 1.5
|-
| colspan=2|[[Engine Improvement]]s<br>{{Turbine}}
| -|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -||colspan=2| 1.5
|-
| colspan=2|[[Shell]]s/[[Searchlights]]/[[Lookout]]s<br>[[Landing Equipment]]/[[Command Facilities]]<br>{{AA Shell}}{{AP Shell}}{{Searchlight}}{{SurfaceShipPersonnel}}{{LandingCraft}}{{Amphibious Tank}}{{Army Units}}{{FCF}}
| 1|| -|| 1|| -|| -|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
| colspan=2|[[Aviation Personnel]]s/[[Anti-Ground Rocket]]s<br>[[Smoke Generator]]s<br>{{Aviation Personnel}}{{AntiGroundArtillery}}{{Smoke}}
| 1|| -|| 1|| -|| -|| -|| -|| -|| 1?<ref name="?"/>|| 1.3?<ref name="?"/>|| -|| -|| -|| -
|}
<references/>
{{Clear}}

==Linear Bonus==
Some bonuses have a linear growth. The bonus can be calculated by:
{|style="padding:10px; margin:20px; border:1px solid orange; border-radius:10px"
|valign="center"|  <math>\text{Bonus}_\text{stat} = \sum_{\text{All equips}} \text{Mod}_\text{equip} \times \bigstar</math>
|}

;With
* <math>\bigstar</math> is the improvement level of the equipment.
* <math>\text{Mod}_\text{equip}</math> is the equipment modifier for that stat. Please refer to the table below for details.

{|class="wikitable" style="text-align:center"
!colspan=2|Equipment Type
!Fighter Power
!Dive Bomb
!Torpedo
!ASW
!Armor
|-
| colspan=2|[[Submarine Torpedo]]es<br>{{Sub Torpedo}}
| -|| -|| 0.2|| -|| -
|-
| colspan=2|[[Fighter]]s<br>{{GreenPlane}}
|rowspan=3| 0.2|| -|| -|| -|| -
|-
| colspan=2|[[Seaplane Fighter]]s<br>{{SeaplaneFighter}}
| -|| -|| -|| -
|-
| colspan=2|[[Interceptor|LB Fighters]]<br>{{Interceptor Fighter}}{{Interceptor Fighter2}}
| -|| -|| -|| -
|-
| colspan=2|[[Fighter-Bomber]]s<br>{{RedPlane}}
|rowspan=2| 0.25|| -|| -|| -|| -
|-
| colspan=2|{{EquipmentLink|Type 0 Fighter Model 64 (Two-seat w/ KMX)|Type 0 Fighter Model 64 (Skilled Fighter-bomber)|text=Mod 64 Zero FB}}<br>{{RedPlane}}
| -|| -||rowspan=3| 0.2||| -
|-
| colspan=2|[[Dive Bomber]]s (ex. FB)<br>{{RedPlane}}
| -|| 0.2|| -|| -
|-
| colspan=2|[[Torpedo Bomber]]s<br>{{BluePlane}}
| -|| -|| 0.2|| -
|-
| colspan=2|[[Seaplane Bomber]]s<br>{{Seaplane}}
| -|| 0.2|| -|| -|| -
|-
| colspan=2|[[Rotorcraft]]<br>{{Autogyro}}
| -|| -|| -||0.2<ref>For base {{ASW}} ASW ≤ 10</ref><br>0.3<ref>For base {{ASW}} ASW ≥ 11</ref>|| -
|-
| colspan=2|[[Liaison Aircraft]]<br>{{ASWPlane}}<ref>[https://twitter.com/hedgehog_hasira/status/1522381044976013315][https://twitter.com/CC_jabberwock/status/1621947944596557824]</ref>
| -|| -|| -|| 0.2<ref>For base {{ASW}} ASW ≤ 7</ref><br>0.3<ref>For base {{ASW}} ASW ≥ 8</ref>|| -
|-
| rowspan=2|[[Extra Armor]]<br>{{ArmorEquipment}}
| [[Medium Extra Armor|Medium]]
| -|| -|| -|| -|| 0.2
|-
| [[Large Extra Armor|Large]]
| -|| -|| -|| -|| 0.3
|}
<references/>
{{Clear}}

==Averaged Bonus==
The average is counted using all craft on the ship for anti-installation, and all "working" craft in the fleet for expeditions.

All the following bonuses are part of bigger formulas:
*''See [[Anti-Installation]] for more details,
*''See [[Expeditions#Expedition_Rewards|Expedition]] for more details.

{|class="wikitable" style="text-align:center"
!colspan=2 rowspan=2|Equipment Type
!colspan=2|Anti-Installation Bonuses<ref>The average stars are counted on a per-category basis, with each 3 categories being counted separately.</ref><ref>https://bbs.nga.cn/read.php?tid=39595977&rand=587</ref>
!rowspan=2|Expedition Bonus
|-
! style="color:tomato"|A1
! style="color:tomato"|C
|-
|colspan=2|[[Landing Craft]]<br>{{LandingCraft}}
|1 + (Average {{Star}} /50)
|[1 + (Average {{Star}} /50)]<sup>'''N'''</sup><ref name="N">N = 1 for any [[Landing Craft]]/[[Ka-Tsu]], +1 to N for each unique:
*{{EquipmentLink|Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)|text=DLC + T89 tank}} OR {{EquipmentLink|Toku Daihatsu Landing Craft + Type 1 Gun Tank|text=Toku DLC + Ho-Ni}}
*{{EquipmentLink|Daihatsu Landing Craft (Panzer II/North African Specification)|text=DLC + Panzer II}}
*{{EquipmentLink|Toku Daihatsu Landing Craft + Panzer III (North African Specification)|text=Toku DLC + Panzer III}}</ref>
|rowspan=3| 1 + (Average {{Star}} /100)<ref>Does not work for Type 3 [[Landing Tank]]s</ref>
|-
|rowspan=2|[[Amphibious Vehicle]]s<br>{{Amphibious Tank}}
|{{Equipment/Link|Special Type 2 Amphibious Tank|text=Ka-Mi tank}}
| 1 + (Average {{Star}} /30)
| 1 + (Average {{Star}} /30)
|-
|{{Equipment/Link|Special Type 4 Amphibious Tank|Special Type 4 Amphibious Tank Kai|text=Ka-Tsu tanks|link=Ka-Tsu}}
| 1 + (Average {{Star}} /50)
|[1 + (Average {{Star}} /50)]<sup>'''N'''</sup><ref name="N"/>
|-
|colspan=2|[[Landing Force]]s<br>{{Landing Forces}}
|colspan=2|''Unknown yet
| -
|}
<references/>
{{Clear}}

==Misc Bonuses==
Other bonuses observed in the game.
*''See [[Smoke Generator]]s for more details,

{|class="wikitable" style="text-align:center"
!Equipment Type
! Smoke Trigger Rate
! Smoke Level
|-
|[[Smoke Generator]]s<br>{{Smoke}}
| ''Increased''<ref>https://discord.com/channels/118339803660943369/178613137430282240/1160847799106158662</ref>
| ''Increased''<ref>2 smokes at {{MaxStar}} can trigger level 3 smoke[https://twitter.com/Nanano88_/status/1777318858845749464]</ref>
|}

It is confirmed that none of the usual stats, probably nothing at all, is given to the following equipment types<ref>https://twitter.com/Divinity_123/status/1377666014834479104</ref>.
{|class="wikitable" style="text-align:center"
!Equipment Type
! Effect
|-
|[[Submarine Equipment]]s<br>{{SubmarineRadar}}
| "Nothing"
|-
|[[Combat Ration]]s<br>{{Rations}}
| "Nothing"<ref>[[Morale and Fatigue#Morale modifiers|Morale gains]] might be affected.</ref>
|}
<references/>
{{Clear}}
*So far, {{Rations}} {{EquipmentLink|Combat Ration|text=Onigiri}} improvement only serves to upgrade into {{EquipmentLink|Combat Ration (Special Onigiri)|text=Special Onigiri}}.
** 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 {{Q|Fd6}}.

===Myths===
The following have been confirmed to be negative.
*{{Star}} on {{Searchlight}} [[Searchlights]] do NOT increase:
**[[Night Cut-In]] rate of neither fleets,
**[[Shooting Order and Targeting#Searchlights|Targeting]] rate.
*{{Star}} on {{SurfaceShipPersonnel}} [[Lookout]]s do NOT increase [[Night Cut-In]] rate,
*{{Star}} on {{SubmarineRadar}} [[Submarine Equipment]]s do NOT increase [[Night Cut-In]] rate.

==Visible Fit Bonuses==
The following equipment provide additional [[Visible Fit Bonuses]] to some ships when improved:

{|class="wikitable mw-collapsible mw-collapsed" 
!Type
!Equipment
!Notes
|-
!rowspan=10|{{Large Gun}}
|{{EquipmentLink|38cm Twin Gun Mount Kai}}
|
|-
|{{EquipmentLink|35.6cm Triple Gun Mount Kai (Dazzle Camouflage)}}
|
|-
|{{EquipmentLink|16inch Triple Gun Mount Mk.6}}
|
|-
|{{EquipmentLink|16inch Triple Gun Mount Mk.6 mod.2}}
|
|-
|{{EquipmentLink|16inch Triple Gun Mount Mk.6 + GFCS}}
|
|-
|{{EquipmentLink|38cm Quadruple Gun Mount Kai Deux}}
|
|-
|{{EquipmentLink|35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage)}}
|
|-
|{{EquipmentLink|35.6cm Twin Gun Mount Kai 4}}
|
|-
|{{EquipmentLink|14inch/45 Twin Gun Mount}}
|
|-
|{{EquipmentLink|14inch/45 Triple Gun Mount}}
|
|-
!rowspan=7|{{Med Gun}}
|{{EquipmentLink|SKC34 20.3cm Twin Gun Mount}}
|
|-
|{{EquipmentLink|14cm Twin Gun Mount Kai}}
|
|-
|{{EquipmentLink|6inch Triple Rapid Fire Gun Mount Mk.16}}
|
|-
|{{EquipmentLink|6inch Triple Rapid Fire Gun Mount Mk.16 mod.2}}
|
|-
|{{EquipmentLink|6inch Mk.XXIII Triple Gun Mount}}
|
|-
|{{EquipmentLink|14cm Twin Gun Mount Kai 2}}
|
|-
|{{EquipmentLink|Prototype 20.3cm (No.4) Twin Gun Mount}}
|
|-
!rowspan=7|{{Light Gun}}
|{{EquipmentLink|12.7cm Single Gun Mount}}
|
|-
|{{EquipmentLink|12.7cm Twin Gun Mount Model D Kai 2}}
|
|-
|{{EquipmentLink|12.7cm Twin Gun Mount Model A Kai 2}}
|
|-
|{{EquipmentLink|12.7cm Twin Gun Mount Model D Kai 3}}
|
|-
|{{EquipmentLink|120mm/50 Twin Gun Mount Kai A.mod.1937}}
|
|-
|{{EquipmentLink|12.7cm Twin Gun Mount Model C Kai 3}}
|
|-
|{{EquipmentLink|12.7cm Twin Gun Mount Model C Kai 3 H}}
|
|-
!rowspan=5|{{Small Green}}
|{{EquipmentLink|10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director}}
|
|-
|{{EquipmentLink|12.7cm Single High-angle Gun Mount (Late Model)}}
|
|-
|{{EquipmentLink|Locally Modified 12.7cm Twin High-angle Gun Mount}}
|
|-
|{{EquipmentLink|Locally Modified 10cm Twin High-angle Gun Mount}}
|
|-
|{{EquipmentLink|12cm Single High-angle Gun Mount Model E Kai}}
|
|-
!{{Sec Gun}}
|{{EquipmentLink|15.2cm Triple Gun Mount}}
|
|-
!rowspan=4|{{Sec Green}}
|{{EquipmentLink|8cm High-angle Gun Kai + Additional Machine Guns}}
|
|-
|{{EquipmentLink|10cm Twin High-angle Gun Mount Kai + Additional Machine Guns}}
|
|-
|{{EquipmentLink|65mm/64 Single Rapid Fire Gun Mount Kai}}
|
|-
|{{EquipmentLink|12cm Single High-angle Gun Mount + 25mm Machine Guns Additions}}
|
|-
!rowspan=2|{{AA Gun}}
|{{EquipmentLink|2cm Flakvierling 38}}
|
|-
|{{EquipmentLink|3.7cm FlaK M42}}
|
|-
!rowspan=3|{{TorpedoWeapon}}
|{{EquipmentLink|53cm Twin Torpedo Mount}}
|
|-
|{{EquipmentLink|61cm Triple (Oxygen) Torpedo Mount Late Model}}
|
|-
|{{EquipmentLink|61cm Quadruple (Oxygen) Torpedo Mount Late Model}}
|
|-
!rowspan=2|{{Sub Torpedo}}
|{{EquipmentLink|Late Model 53cm Bow Torpedo Mount (8 tubes)}}
|
|-
|{{EquipmentLink|Skilled Sonar Personnel + Late Model Bow Torpedo Mount (4 tubes)}}
|
|-
!rowspan=2|{{Fighter}}
|{{EquipmentLink|Shiden Kai 4}}
|
|-
|{{EquipmentLink|Type 0 Fighter Model 64 (Air Superiority Fighter Specification)}}
|
|-
!rowspan=5|{{Dive Bomber}}
|{{EquipmentLink|SBD-5}}
|
|-
|{{EquipmentLink|SB2C-3}}
|
|-
|{{EquipmentLink|SB2C-5}}
|
|-
|{{EquipmentLink|Type 0 Fighter Model 64 (Two-seat w/ KMX)}}
|
|-
|{{EquipmentLink|Type 0 Fighter Model 64 (Skilled Fighter-bomber)}}
|
|-
!rowspan=2|{{Torpedo Bomber}}
|{{EquipmentLink|Barracuda Mk.II}}
|
|-
|{{EquipmentLink|Barracuda Mk.III}}
|
|-
!rowspan=5|{{Carrier Recon}}
|{{EquipmentLink|Saiun}}
|
|-
|{{EquipmentLink|Type 2 Reconnaissance Aircraft}}
|
|-
|{{EquipmentLink|Saiun (Eastern Caroline Air Group)}}
|
|-
|{{EquipmentLink|Saiun (4th Recon Squad)}}
|
|-
|{{EquipmentLink|Fulmar (Reconnaissance Fighter/Skilled)}}
|
|-
!rowspan=8|{{SPR}}
|{{EquipmentLink|Ar196 Kai}}
|
|-
|{{EquipmentLink|Shiun}}
|
|-
|{{EquipmentLink|OS2U}}
|
|-
|{{EquipmentLink|SOC Seagull}}
|
|-
|{{EquipmentLink|SO3C Seamew Kai}}
|
|-
|{{EquipmentLink|Shiun (Skilled)}}
|
|-
|{{EquipmentLink|Type 0 Small Reconnaissance Seaplane}}
|
|-
|{{EquipmentLink|Type 0 Small Reconnaissance Seaplane (Skilled)}}
|
|-
!{{Night Recon}}
|{{EquipmentLink|Loire 130M}}
|
|-
!{{SPF}}
|{{EquipmentLink|Kyoufuu Kai 2}}
|
|-
!rowspan=3|{{ASWPlane}}
|{{EquipmentLink|Type 3 Command Liaison Aircraft Kai}}
|
|-
|{{EquipmentLink|Type 1 Fighter Hayabusa Model II Kai (20th Squadron)}}
|
|-
|{{EquipmentLink|Type 1 Fighter Hayabusa Model III Kai (Skilled/20th Squadron)}}
|
|-
!rowspan=2|{{DepthCharge}}
|{{EquipmentLink|Type 2 Depth Charge}}
|
|-
|{{EquipmentLink|Type 2 Depth Charge Kai 2}}
|
|-
!{{Small Sonar}}
|{{EquipmentLink|Type 3 Active Sonar Kai}}
|
|-
!{{Large Sonar}}
|{{EquipmentLink|Type 0 Passive Sonar}}
|
|-
!rowspan=2|{{Small Radar}}
|{{EquipmentLink|Type 13 Air Radar Kai (Late Model)}}
|
|-
|{{EquipmentLink|Passive Radiolocator (E27) + Type 22 Surface Radar Kai 4 (Calibrated Late Model)}}
|
|-
!rowspan=5|{{Large Radar}}
|{{EquipmentLink|FuMO25 Radar}}
|
|-
|{{EquipmentLink|Type 21 Air Radar Kai 2}}
|
|-
|{{EquipmentLink|Type 42 Air Radar Kai 2}}
|
|-
|{{EquipmentLink|Type 281 Radar}}
|
|-
|{{EquipmentLink|Type 274 Fire Control Radar}}
|
|-
!{{SubmarineRadar}}
|{{EquipmentLink|Late Model Radar & Passive Radiolocator + Snorkel Equipment}}
|
|-
!rowspan=2|{{AA Shell}}
|{{EquipmentLink|Type 3 Shell Kai}}
|
|-
|{{EquipmentLink|Type 3 Shell Kai 2}}
|
|-
!{{SurfaceShipPersonnel}}
|{{EquipmentLink|Torpedo Squadron Skilled Lookouts}}
|
|-
!{{Turbine}}
|{{EquipmentLink|New Model High Temperature High Pressure Boiler}}
|
|-
!rowspan=2|{{Large Armor}}
|{{EquipmentLink|Pugliese Underwater Protection Bulkhead}}
|
|-
|{{EquipmentLink|New Kanhon Design Anti-torpedo Bulge (Large)}}
|
|-
!{{Aviation Personnel}}
|{{EquipmentLink|Skilled Deck Personnel + Aviation Maintenance Hands}}
|
|-
!rowspan=2|{{Amphibious Tank}}
|{{EquipmentLink|Special Type 4 Amphibious Tank}}
|
|-
|{{EquipmentLink|Special Type 4 Amphibious Tank Kai}}
|
|}

==Equipability==
The following equipment have enhanced [[Equipment/Equipability|equipability]] when improved:
*{{EquipmentLink|Passive Radiolocator (E27) + Type 22 Surface Radar Kai 4 (Calibrated Late Model)}} at {{Star}}+4:
**Can be equipped in the [[RE]] of: {{Class|Kagerou}}, {{Class|Yuugumo}}, {{Class|Matsu}}, [[Shimakaze Kai]], [[Shigure Kai San]], [[Harusame Kai Ni]], {{Class|Kongou|Kai Ni B/C}}
*{{EquipmentLink|FuMO25 Radar}} at {{Star}}+7:
**Can be equipped in the [[RE]] of: {{Class|Bismarck}}, {{Class|Admiral Hipper}}

==Resource Node Bonus==
Uniquely on the [[Resource Node]]s of [[1-6]] and [[3-5]], improvements {{Star}} slightly increase resource gains.
{{Gain Modifier Sp2}}

==Expeditions Bonus==
For expedition stats requirements, improvements {{Star}} are globally simplified, overwriting the above-mentioned improvements.
*''See [[Expeditions#Adjusted Improvement|here]] for more details

=See Also=
*[[Akashi's Improvement Arsenal]]
*[[Improvement/Categories]]
*[[Improvement/Helper]]
*[[Improvement/Reference Charts]]
*[[Help:Akashi Upgrades]]
*https://akashi-list.me/
{{Mechanics}}