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Line 26: − − *So far, improvement only serves to upgrade {{Rations}} {{EquipmentLink|Combat Ration|text=Onigiri}} 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}}. Line 51:
Line 51: − ===Square Rooted Bonus===+ Line 91:
Line 91: − + Line 141:
Line 141: − + Line 150:
Line 150: − + Line 159:
Line 159: − ===Linear Bonus===+ − + + + + + + + + Line 213:
Line 220: − ===Averaged Bonus===+ Line 221:
Line 228: − + − + Line 228:
Line 235: − + − + − + − + + − + + + + + + + + + + − ===Misc Bonuses===+ Line 249:
Line 266: + + Line 257:
Line 276: − + Line 267:
Line 286: + + − ====Resource Node Bonus====+ − Uniquely on the [[Resource Node]]s of [[1-6]] and [[3-5]], improvements {{Star}} slightly increase resource gains. − {{Gain Modifier Sp2}} − − ====Myths==== Line 280:
Line 297: − + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + Line 287:
Line 627: +
→Visible Fit Bonuses
{{PortMechanicsPortal}}
{{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.
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.''
*''For a comprehensive list of improvements, please refer to [https://akashi-list.me/ Akashi-List] or the List of Improvements.''
#* Those bonuses work to some extent to reach regular [[Expeditions]] thresholds.
#* Those bonuses work to some extent to reach regular [[Expeditions]] thresholds.
#* Some improvements on equipment can add some additional visible [[Equipment Bonuses|Fit Bonuses]].
#* 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.
# Equipped equipment cannot be improved.
#* There is an option to unequip the equipment from the improvement list.
#* There is an option to unequip the equipment from the improvement list.
#* 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).
#* 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.
# 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=
=Improvement Success Rates=
The improvement effects are unknown for some equipment types/cases.
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:
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"
{|style="padding:10px; margin:20px; border:1px solid orange; border-radius:10px"
| 1|| -|| 1|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
| 1|| -|| 1|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
|-
|[[:Category:Secondary High-Angle Guns|HA]] (Green)<br>{{Sec Green}}
|(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|| -|| -|| -|| -
|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|| -|| -|| -|| -
|-
|-
| 0.75|| -|| -||rowspan=2| 0.67|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -
| 0.75|| -|| -||rowspan=2| 0.67|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -
|-
|-
| colspan=2|[[Type 95 Depth Charge|T95 DC]] & [[Type 2 Depth Charge|T2 DC]]/[[Type 2 Depth Charge Kai 2|K2]]<br>{{DepthCharge}}
| 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| 1.5
| -|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -|| -||colspan=2| 1.5
|-
|-
| colspan=2|[[Shell]]s/[[Searchlights]]/[[Lookout]]s/[[Landing Equipment]]<br>[[Anti-Ground Rocket]]s/[[Command Facilities]]<br>{{AA Shell}}{{AP Shell}}{{Searchlight}}{{SurfaceShipPersonnel}}{{LandingCraft}}{{Amphibious Tank}}{{Army Units}}{{FCF}}
| 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|| -|| -|| -|| -
| 1|| -|| 1|| -|| -|| -|| -|| -|| 1|| 1.3|| -|| -|| -|| -
|-
|-
{{Clear}}
{{Clear}}
==Linear Bonus==
Some bonuses have a linear growth. The bonus per improvement level is given in the table below.
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"
{|class="wikitable" style="text-align:center"
{{Clear}}
{{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.
The average is counted using all craft on the ship for anti-installation, and all "working" craft in the fleet for expeditions.
{|class="wikitable" style="text-align:center"
{|class="wikitable" style="text-align:center"
!rowspan=2|Equipment Type
!colspan=2 rowspan=2|Equipment Type
!colspan=2|Anti-Installation Bonuses
!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
!rowspan=2|Expedition Bonus
|-
|-
! style="color:tomato"|C
! style="color:tomato"|C
|-
|-
|[[Landing Craft]]<br>{{LandingCraft}}
|colspan=2|[[Landing Craft]]<br>{{LandingCraft}}
|1 + (Average {{Star}} /50)
|1 + (Average {{Star}} /50)
|[1 + (Average {{Star}} /50)]<sup>'''N'''</sup><ref>N = 1 for any [[Landing Craft]], +1 to N for each unique:
|[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 (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}}</ref>
*{{EquipmentLink|Daihatsu Landing Craft (Panzer II/North African Specification)|text=DLC + Panzer II}}
|rowspan=2| 1 + (Average {{Star}} /100)
*{{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>
|-
|-
|[[Amphibious Tank]]s<br>{{Amphibious Tank}}
|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)
| 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/>
<references/>
{{Clear}}
{{Clear}}
==Misc Bonuses==
Other bonuses observed in the game.
Other bonuses observed in the game.
*''See [[Smoke Generator]]s for more details,
*''See [[Smoke Generator]]s for more details,
!Equipment Type
!Equipment Type
! Smoke Trigger Rate
! Smoke Trigger Rate
! Smoke Level
|-
|-
|[[Smoke Generator]]s<br>{{Smoke}}
|[[Smoke Generator]]s<br>{{Smoke}}
| ''Increased''<ref>https://discord.com/channels/118339803660943369/178613137430282240/1160847799106158662</ref>
| ''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>
|}
|}
{|class="wikitable" style="text-align:center"
{|class="wikitable" style="text-align:center"
!Equipment Type
!Equipment Type
! Smoke Trigger Rate
! Effect
|-
|-
|[[Submarine Equipment]]s<br>{{SubmarineRadar}}
|[[Submarine Equipment]]s<br>{{SubmarineRadar}}
<references/>
<references/>
{{Clear}}
{{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.
The following have been confirmed to be negative.
*{{Star}} on {{Searchlight}} [[Searchlights]] do NOT increase:
*{{Star}} on {{Searchlight}} [[Searchlights]] do NOT increase:
*{{Star}} on {{SubmarineRadar}} [[Submarine Equipment]]s do NOT increase [[Night Cut-In]] rate.
*{{Star}} on {{SubmarineRadar}} [[Submarine Equipment]]s do NOT increase [[Night Cut-In]] rate.
===Expeditions Bonus===
==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}}
|Not improvable
|-
|{{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}}
|Not improvable
|-
|{{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}}
|Not improvable
|-
|{{EquipmentLink|6inch Triple Rapid Fire Gun Mount Mk.16 mod.2}}
|Not improvable
|-
|{{EquipmentLink|6inch Mk.XXIII Triple Gun Mount}}
|Not improvable
|-
|{{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}}
|Not improvable
|-
|{{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}}
|Not improvable
|-
|{{EquipmentLink|Locally Modified 10cm Twin High-angle Gun Mount}}
|Not improvable
|-
|{{EquipmentLink|12cm Single High-angle Gun Mount Model E Kai}}
|Not improvable
|-
!{{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}}
|Not improvable
|-
|{{EquipmentLink|12cm Single High-angle Gun Mount + 25mm Machine Guns Additions}}
|
|-
!rowspan=2|{{AA Gun}}
|{{EquipmentLink|2cm Flakvierling 38}}
|
|-
|{{EquipmentLink|3.7cm FlaK M42}}
|Not improvable
|-
!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)}}
|Not improvable
|-
!rowspan=3|{{Fighter}}
|{{EquipmentLink|Seafire Mk.III Kai}}
|Not improvable
|-
|{{EquipmentLink|Shiden Kai 4}}
|
|-
|{{EquipmentLink|Type 0 Fighter Model 64 (Air Superiority Fighter Specification)}}
|
|-
!rowspan=5|{{Dive Bomber}}
|{{EquipmentLink|SBD-5}}
|
|-
|{{EquipmentLink|SB2C-3}}
|Not improvable
|-
|{{EquipmentLink|SB2C-5}}
|Not improvable
|-
|{{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}}
|Not improvable
|-
|{{EquipmentLink|Type 2 Reconnaissance Aircraft}}
|
|-
|{{EquipmentLink|Saiun (Eastern Caroline Air Group)}}
|Not improvable
|-
|{{EquipmentLink|Saiun (4th Recon Squad)}}
|Not improvable
|-
|{{EquipmentLink|Fulmar (Reconnaissance Fighter/Skilled)}}
|Not improbable
|-
!{{Large Recon}}
|{{EquipmentLink|Prototype Keiun (Carrier-based Reconnaissance Model)}}
|
|-
!rowspan=8|{{SPR}}
|{{EquipmentLink|Ar196 Kai}}
|
|-
|{{EquipmentLink|Shiun}}
|
|-
|{{EquipmentLink|OS2U}}
|
|-
|{{EquipmentLink|SOC Seagull}}
|
|-
|{{EquipmentLink|SO3C Seamew Kai}}
|Not improvable
|-
|{{EquipmentLink|Shiun (Skilled)}}
|Not improvable
|-
|{{EquipmentLink|Type 0 Small Reconnaissance Seaplane}}
|Not improvable
|-
|{{EquipmentLink|Type 0 Small Reconnaissance Seaplane (Skilled)}}
|Not improvable
|-
!{{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)}}
|Not improvable
|-
|{{EquipmentLink|Type 1 Fighter Hayabusa Model III Kai (Skilled/20th Squadron)}}
|Not improvable
|-
!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}}
|Not improvable
|-
|{{EquipmentLink|Type 281 Radar}}
|Not improvable
|-
|{{EquipmentLink|Type 274 Fire Control Radar}}
|Not improvable
|-
!{{SubmarineRadar}}
|{{EquipmentLink|Late Model Radar & Passive Radiolocator + Snorkel Equipment}}
|Not improvable
|-
!rowspan=2|{{AA Shell}}
|{{EquipmentLink|Type 3 Shell Kai}}
|
|-
|{{EquipmentLink|Type 3 Shell Kai 2}}
|
|-
!{{SurfaceShipPersonnel}}
|{{EquipmentLink|Torpedo Squadron Skilled Lookouts}}
|Not improvable
|-
!{{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}}
|Not improvable
|-
|{{EquipmentLink|Special Type 4 Amphibious Tank Kai}}
|Not improvable
|}
==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.
For expedition stats requirements, improvements {{Star}} are globally simplified, overwriting the above-mentioned improvements.
*''See [[Expeditions#Adjusted Improvement|here]] for more details
*''See [[Expeditions#Adjusted Improvement|here]] for more details
*[[Akashi's Improvement Arsenal]]
*[[Akashi's Improvement Arsenal]]
*[[Improvement/Categories]]
*[[Improvement/Categories]]
*[[Improvement/Helper]]
*[[Improvement/Reference Charts]]
*[[Improvement/Reference Charts]]
*[[Help:Akashi Upgrades]]
*[[Help:Akashi Upgrades]]
*https://akashi-list.me/
*https://akashi-list.me/
{{Mechanics}}
{{Mechanics}}