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Difference between revisions of "Help:Akashi Upgrades"

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(→‎Introduction: moved from Improvement/Reference Charts)
 
(22 intermediate revisions by 3 users not shown)
Line 4: Line 4:
 
''Please refer to:
 
''Please refer to:
 
*''[[Improvement]] for more details on the stat bonuses,
 
*''[[Improvement]] for more details on the stat bonuses,
−
*''[https://akashi-list.me/ Akashi-List] for the costs involved.
+
*''[https://akashi-list.me/ Akashi-List] for the costs involved as well as the various stats behaviors.
  
−
===The Breakpoint Myth===
+
==Bonus Growth==
−
Breakpoints refer to points where upgrade bonuses reach whole numbers. These points are stressed because of the way the game rounds down the results of most formulas. The misconception is that a 1.99 bonus is just as good as a 1.00 bonus because of rounding. While there is a slight grain of truth to the myth, things get a little complex in practice. Due to how many multipliers and other bonuses are involved, trying to hit equipment upgrade breakpoints doesn't affect very much in the grand scheme of things.
+
The following describes how stats gained through '''"[[Improvement#Square Rooted Bonus|square rooted improvement bonuses]]"''' behave depending on the base modifier.
−
 
+
{|class="wikitable" style="text-align:center"
−
The most important thing to do is to upgrade your equipment to certain critical points:
+
!
−
* {{Star}}'''+1''' : Provides the biggest power increase (square-rooted only).
+
!colspan=10|★ Improvement Level
−
* {{Star}}'''+6''' : The point when failures start to kick in and costs take a jump.
+
|-
−
* {{MaxStar}} : The final step to maximize upgrade bonuses.
+
!Modifier
−
 
+
! 1|| 2|| 3|| 4|| 5|| 6|| 7|| 8|| 9|| 10
−
=Screw Guaranteeing/Saving=
+
|-
−
In most cases, it is statistically cheaper to either toggle or not the "guaranteed improvement".
+
!0.5
−
 
+
| 0.50|| 0.70|| 0.86|| 1.00|| 1.11|| 1.22|| 1.32|| 1.41|| 1.50|| 1.58
−
Reminder :
+
|-
−
{|class="wikitable" style="text-align:center" style="margin:auto"
+
!colspan=11|
−
!Modification Level  
+
|-
−
! 1★!! 2★!! 3★!! 4★!! 5★!! 6★!! 7★!! 8★!! 9★!! Max★!! Upgrade
+
!0.67
 +
| 0.67|| 0.94|| 1.15|| 1.33|| 1.49|| 1.63|| 1.76|| 1.89|| 2.00|| 2.11
 +
|-
 +
!colspan=11|
 
|-
 
|-
−
!Akashi
+
!0.7
−
| 100% || 100% || 100% || 100% || 95% || 90% || 80% || 77% || 72% || 60% || 50%
+
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
 
|-
 
|-
−
!Akashi Kai
+
!colspan=11|
−
| 100% || 100% || 100% || 100% || 100% || 95% || 90% || 82% || 77% || 67% || 62%
+
|-
−
|}
+
!0.75
−
 
+
| 0.75|| 1.06|| 1.29|| 1.50|| 1.67|| 1.83|| 1.98|| 2.12|| 2.25|| 2.37
−
Average screw cost when not guaranteed, assuming Akashi is Kai and not counting any equipment cost:
+
|-
 +
!colspan=11|
 +
|-
 +
!1.0
 +
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
 +
|-
 +
!colspan=11|
 +
|-
 +
!1.2
 +
| 1.20|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
 +
|-
 +
!colspan=11|
 +
|-
 +
!1.25
 +
| 1.25|| 1.76|| 2.16|| 2.50|| 2.79|| 3.06|| 3.30|| 3.53|| 3.75|| 3.95
 +
|-
 +
!colspan=11|
 +
|-
 +
!1.3
 +
| 1.30|| 1.83|| 2.25|| 2.60|| 2.90|| 3.18|| 3.43|| 3.67|| 3.90|| 4.11
 +
|-
 +
!colspan=11|
 +
|-
 +
!1.4
 +
| 1.40|| 1.97|| 2.42|| 2.80|| 3.13|| 3.42|| 3.70|| 3.95|| 4.20|| 4.42
 +
|-
 +
!colspan=11|
 +
|-
 +
!1.5
 +
| 1.50|| 2.12|| 2.59|| 3.00|| 3.35|| 3.67|| 3.96|| 4.24|| 4.50|| 4.74
 +
|-
 +
!colspan=11|
 +
|-
 +
!2.0
 +
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
 +
|-
 +
!colspan=11|
 +
|-
 +
!3.0
 +
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
 +
|}
  
−
[[File:Average costs.png|750px|center]]
+
===1.0+1.5 Modifier===
 +
Battleships' standard setup can take advantage of the firepower {{Firepower}} bonus from the 2 {{Large Gun}} large main guns (x1.5) and the {{AP Shell}} AP shell (x1.0).
 +
*''Highlights indicate threshold changes.
  
−
As expected, when the guaranteed cost is too high, not guaranteeing the upgrade is on average cheaper screw-wise, but this is not counting any potential equipment that may be lost and so may imply a higher screw cost.
+
{|class="wikitable mw-collapsible mw-collapsed" style="text-align:center"
−
 
+
!rowpsan=2 colspan=2| Total Gun ★
−
Guaranteeing worthiness per base upgrade screw cost can then be defined as followed:
+
!colspan=10| AP Shell ★
−
<tabber>
 
−
|-|General rules=
 
−
When upgrading any equipment, Devmats and Screw are consumed, and eventually one or several equipment and consumables.
 
−
*Since obtaining Devmats is not an issue, their cost is simply ignored.
 
−
*Since failing an upgrade does not consume any consumables, they are ignored.
 
−
*For equipment consumed :
 
−
**If they are craftable or relatively easy to obtain, their cost is negligible in front of any screw cost.
 
−
**If the equipment consumed is a very rare one, then guaranteeing the upgrade should be evident.
 
−
**If the equipment consumed is itself made via Akashi's upgrades, '''then its total screw cost must be added to the base screw costs used in later examples.
 
−
|-|0=
 
−
{|class="wikitable"
 
−
!guaranteed cost
 
−
!1st time guaranteeing is worth it (in {{Star}})
 
 
|-
 
|-
−
| 0|| 6th {{Star}}
+
!Gun 1!!Gun 2
 +
!1!!2!!3!!4!!5!!6!!7!!8!!9!!10
 
|-
 
|-
−
| 1+|| Never
+
| 1|| 1||style="background-color:#ffc7ce" | 4.000|| 4.414|| 4.732||style="background-color:#ffc7ce" | 5.000|| 5.236|| 5.449|| 5.646|| 5.828||style="background-color:#ffc7ce" | 6.000|| 6.162
−
|}
 
−
 
 
−
|-|1=
 
−
{|class="wikitable"
 
−
!guaranteed cost
 
−
!1st time guaranteeing is worth it (in {{Star}})
 
 
|-
 
|-
−
| 1|| 6th {{Star}}
+
| 2|| 1|| 4.621||style="background-color:#ffc7ce" | 5.036|| 5.353|| 5.621|| 5.857||style="background-color:#ffc7ce" | 6.071|| 6.267|| 6.450|| 6.621|| 6.784
 
|-
 
|-
−
| 2+|| Never
+
| 3|| 1||style="background-color:#ffc7ce" | 5.098|| 5.512|| 5.830||style="background-color:#ffc7ce" | 6.098|| 6.334|| 6.548|| 6.744|| 6.927||style="background-color:#ffc7ce" | 7.098|| 7.260
−
|}
 
−
 
 
−
|-|2=
 
−
{|class="wikitable"
 
−
!guaranteed cost
 
−
!1st time guaranteeing is worth it (in {{Star}})
 
 
|-
 
|-
−
| 2|| 6th {{Star}}
+
| 2|| 2|| 5.243|| 5.657|| 5.975||style="background-color:#ffc7ce" | 6.243|| 6.479|| 6.692|| 6.888||style="background-color:#ffc7ce" | 7.071|| 7.243|| 7.405
 +
|-
 +
| 4|| 1|| 5.500|| 5.914||style="background-color:#ffc7ce" | 6.232|| 6.500|| 6.736|| 6.949||style="background-color:#ffc7ce" | 7.146|| 7.328|| 7.500|| 7.662
 +
|-
 +
| 3|| 2|| 5.719||style="background-color:#ffc7ce" | 6.134|| 6.451|| 6.719|| 6.955||style="background-color:#ffc7ce" | 7.169|| 7.365|| 7.548|| 7.719|| 7.882
 +
|-
 +
| 5|| 1|| 5.854||style="background-color:#ffc7ce" | 6.268|| 6.586|| 6.854||style="background-color:#ffc7ce" | 7.090|| 7.304|| 7.500|| 7.683|| 7.854||style="background-color:#ffc7ce" | 8.016
 
|-
 
|-
−
| 3|| {{MaxStar}}
+
| 4|| 2||style="background-color:#ffc7ce" | 6.121|| 6.536|| 6.853||style="background-color:#ffc7ce" | 7.121|| 7.357|| 7.571|| 7.767|| 7.950||style="background-color:#ffc7ce" | 8.121|| 8.284
 
|-
 
|-
−
| 4+|| Never
+
| 6|| 1|| 6.174|| 6.588|| 6.906||style="background-color:#ffc7ce" | 7.174|| 7.410|| 7.624|| 7.820||style="background-color:#ffc7ce" | 8.003|| 8.174|| 8.337
−
|}
 
−
 
 
−
|-|3=
 
−
{|class="wikitable"
 
−
!guaranteed cost
 
−
!1st time guaranteeing is worth it (in {{Star}})
 
 
|-
 
|-
−
| 3|| 6th {{Star}}
+
| 3|| 3|| 6.196|| 6.610|| 6.928||style="background-color:#ffc7ce" | 7.196|| 7.432|| 7.646|| 7.842||style="background-color:#ffc7ce" | 8.025|| 8.196|| 8.358
 
|-
 
|-
−
| 4|| 8th {{Star}}
+
| 7|| 1|| 6.469|| 6.883||style="background-color:#ffc7ce" | 7.201|| 7.469|| 7.705|| 7.918||style="background-color:#ffc7ce" | 8.114|| 8.297|| 8.469|| 8.631
 
|-
 
|-
−
| 5+|| Never
+
| 5|| 2|| 6.475|| 6.890||style="background-color:#ffc7ce" | 7.207|| 7.475|| 7.711|| 7.925||style="background-color:#ffc7ce" | 8.121|| 8.304|| 8.475|| 8.638
−
|}
 
−
 
 
−
|-|4=
 
−
{|class="wikitable"
 
−
!guaranteed cost
 
−
!1st time guaranteeing is worth it (in {{Star}})
 
 
|-
 
|-
−
| 4|| 6th {{Star}}
+
| 4|| 3|| 6.598||style="background-color:#ffc7ce" | 7.012|| 7.330|| 7.598|| 7.834||style="background-color:#ffc7ce" | 8.048|| 8.244|| 8.427|| 8.598|| 8.760
 
|-
 
|-
−
| 5|| 8th {{Star}}
+
| 8|| 1|| 6.743||style="background-color:#ffc7ce" | 7.157|| 7.475|| 7.743|| 7.979||style="background-color:#ffc7ce" | 8.192|| 8.388|| 8.571|| 8.743|| 8.905
 
|-
 
|-
−
| 6|| {{MaxStar}}
+
| 6|| 2|| 6.796||style="background-color:#ffc7ce" | 7.210|| 7.528|| 7.796||style="background-color:#ffc7ce" | 8.032|| 8.245|| 8.441|| 8.624|| 8.796|| 8.958
 
|-
 
|-
−
| 7+|| Never
+
| 5|| 3|| 6.952||style="background-color:#ffc7ce" | 7.366|| 7.684|| 7.952||style="background-color:#ffc7ce" | 8.188|| 8.402|| 8.598|| 8.781|| 8.952||style="background-color:#ffc7ce" | 9.114
−
|}
+
|-
−
 
+
| 9|| 1||style="background-color:#ffc7ce" | 7.000|| 7.414|| 7.732||style="background-color:#ffc7ce" | 8.000|| 8.236|| 8.449|| 8.646|| 8.828||style="background-color:#ffc7ce" | 9.000|| 9.162
−
|-|5=
+
|-
−
{|class="wikitable"
+
| 4|| 4||style="background-color:#ffc7ce" | 7.000|| 7.414|| 7.732||style="background-color:#ffc7ce" | 8.000|| 8.236|| 8.449|| 8.646|| 8.828||style="background-color:#ffc7ce" | 9.000|| 9.162
−
!guaranteed cost
+
|-
−
!1st time guaranteeing is worth it (in {{Star}})
+
| 7|| 2|| 7.090|| 7.504|| 7.822||style="background-color:#ffc7ce" | 8.090|| 8.326|| 8.539|| 8.736|| 8.918||style="background-color:#ffc7ce" | 9.090|| 9.252
 
|-
 
|-
−
| 5|| 6th {{Star}}
+
| 10|| 1|| 7.243|| 7.658|| 7.975||style="background-color:#ffc7ce" | 8.243|| 8.479|| 8.693|| 8.889||style="background-color:#ffc7ce" | 9.072|| 9.243|| 9.406
 
|-
 
|-
−
| 6|| 7th {{Star}}
+
| 6|| 3|| 7.272|| 7.687||style="background-color:#ffc7ce" | 8.004|| 8.272|| 8.508|| 8.722|| 8.918||style="background-color:#ffc7ce" | 9.101|| 9.272|| 9.435
 
|-
 
|-
−
| 7|| 9th {{Star}}
+
| 5|| 4|| 7.354|| 7.768||style="background-color:#ffc7ce" | 8.086|| 8.354|| 8.590|| 8.804||style="background-color:#ffc7ce" | 9.000|| 9.183|| 9.354|| 9.516
 
|-
 
|-
−
| 8|| {{MaxStar}}
+
| 8|| 2|| 7.364|| 7.778||style="background-color:#ffc7ce" | 8.096|| 8.364|| 8.600|| 8.813||style="background-color:#ffc7ce" | 9.010|| 9.192|| 9.364|| 9.526
 
|-
 
|-
−
| 9+|| Never
+
| 7|| 3|| 7.567|| 7.981||style="background-color:#ffc7ce" | 8.299|| 8.567|| 8.803||style="background-color:#ffc7ce" | 9.016|| 9.212|| 9.395|| 9.567|| 9.729
−
|}
 
−
 
 
−
|-|6=
 
−
{|class="wikitable"
 
−
!guaranteed cost
 
−
!1st time guaranteeing is worth it (in {{Star}})
 
 
|-
 
|-
−
| 6|| 6th {{Star}}
+
| 9|| 2|| 7.621||style="background-color:#ffc7ce" | 8.036|| 8.353|| 8.621|| 8.857||style="background-color:#ffc7ce" | 9.071|| 9.267|| 9.450|| 9.621|| 9.784
 
|-
 
|-
−
| 7|| 7th {{Star}}
+
| 6|| 4|| 7.674||style="background-color:#ffc7ce" | 8.088|| 8.406|| 8.674|| 8.910||style="background-color:#ffc7ce" | 9.124|| 9.320|| 9.503|| 9.674|| 9.837
 
|-
 
|-
−
| 8|| 9th {{Star}}
+
| 5|| 5|| 7.708||style="background-color:#ffc7ce" | 8.122|| 8.440|| 8.708|| 8.944||style="background-color:#ffc7ce" | 9.158|| 9.354|| 9.537|| 9.708|| 9.870
 
|-
 
|-
−
| 9|| {{MaxStar}}
+
| 8|| 3|| 7.841||style="background-color:#ffc7ce" | 8.255|| 8.573|| 8.841||style="background-color:#ffc7ce" | 9.077|| 9.290|| 9.486|| 9.669|| 9.841||style="background-color:#ffc7ce" | 10.003
 
|-
 
|-
−
| 10+|| Never
+
| 10|| 2|| 7.865||style="background-color:#ffc7ce" | 8.279|| 8.597|| 8.865||style="background-color:#ffc7ce" | 9.101|| 9.314|| 9.510|| 9.693|| 9.865||style="background-color:#ffc7ce" | 10.027
−
|}
+
|-
−
 
+
| 7|| 4|| 7.969||style="background-color:#ffc7ce" | 8.383|| 8.701|| 8.969||style="background-color:#ffc7ce" | 9.205|| 9.418|| 9.614|| 9.797|| 9.969||style="background-color:#ffc7ce" | 10.131
−
|-|7=
+
|-
−
{|class="wikitable"
+
| 6|| 5||style="background-color:#ffc7ce" | 8.028|| 8.443|| 8.760||style="background-color:#ffc7ce" | 9.028|| 9.264|| 9.478|| 9.674|| 9.857||style="background-color:#ffc7ce" | 10.028|| 10.191
−
!guaranteed cost
+
|-
−
!1st time guaranteeing is worth it (in {{Star}})
+
| 9|| 3|| 8.098|| 8.512|| 8.830||style="background-color:#ffc7ce" | 9.098|| 9.334|| 9.548|| 9.744|| 9.927||style="background-color:#ffc7ce" | 10.098|| 10.260
 
|-
 
|-
−
| 7|| 6th {{Star}}
+
| 8|| 4|| 8.243|| 8.657|| 8.975||style="background-color:#ffc7ce" | 9.243|| 9.479|| 9.692|| 9.888||style="background-color:#ffc7ce" | 10.071|| 10.243|| 10.405
 
|-
 
|-
−
| 8|| 7th {{Star}}
+
| 7|| 5|| 8.323|| 8.737||style="background-color:#ffc7ce" | 9.055|| 9.323|| 9.559|| 9.772|| 9.968||style="background-color:#ffc7ce" | 10.151|| 10.323|| 10.485
 
|-
 
|-
−
| 9|| 8th {{Star}}
+
| 10|| 3|| 8.341|| 8.756||style="background-color:#ffc7ce" | 9.074|| 9.341|| 9.578|| 9.791|| 9.987||style="background-color:#ffc7ce" | 10.170|| 10.341|| 10.504
 
|-
 
|-
−
| 10|| 9th {{Star}}
+
| 6|| 6|| 8.348|| 8.763||style="background-color:#ffc7ce" | 9.081|| 9.348|| 9.585|| 9.798|| 9.994||style="background-color:#ffc7ce" | 10.177|| 10.348|| 10.511
 
|-
 
|-
−
| 11|| {{MaxStar}}
+
| 9|| 4|| 8.500|| 8.914||style="background-color:#ffc7ce" | 9.232|| 9.500|| 9.736|| 9.949||style="background-color:#ffc7ce" | 10.146|| 10.328|| 10.500|| 10.662
 
|-
 
|-
−
| 12+|| Never
+
| 8|| 5|| 8.597||style="background-color:#ffc7ce" | 9.011|| 9.329|| 9.597|| 9.833||style="background-color:#ffc7ce" | 10.046|| 10.242|| 10.425|| 10.597|| 10.759
−
|}
 
−
 
 
−
|-|8=
 
−
{|class="wikitable"
 
−
!guaranteed cost
 
−
!1st time guaranteeing is worth it (in {{Star}})
 
 
|-
 
|-
−
| 8|| 6th {{Star}}
+
| 7|| 6|| 8.643||style="background-color:#ffc7ce" | 9.057|| 9.375|| 9.643|| 9.879||style="background-color:#ffc7ce" | 10.092|| 10.289|| 10.471|| 10.643|| 10.805
 
|-
 
|-
−
| 9|| 7th {{Star}}
+
| 10|| 4|| 8.743||style="background-color:#ffc7ce" | 9.158|| 9.475|| 9.743|| 9.979||style="background-color:#ffc7ce" | 10.193|| 10.389|| 10.572|| 10.743|| 10.906
 
|-
 
|-
−
| 10|| 8th {{Star}}
+
| 9|| 5|| 8.854||style="background-color:#ffc7ce" | 9.268|| 9.586|| 9.854||style="background-color:#ffc7ce" | 10.090|| 10.304|| 10.500|| 10.683|| 10.854|| 11.016
 
|-
 
|-
−
| 11|| 9th {{Star}}
+
| 8|| 6|| 8.917||style="background-color:#ffc7ce" | 9.331|| 9.649|| 9.917||style="background-color:#ffc7ce" | 10.153|| 10.366|| 10.563|| 10.745|| 10.917|| 11.079
 
|-
 
|-
−
| 12|| {{MaxStar}}
+
| 7|| 7|| 8.937||style="background-color:#ffc7ce" | 9.351|| 9.669|| 9.937||style="background-color:#ffc7ce" | 10.173|| 10.387|| 10.583|| 10.766|| 10.937||style="background-color:#ffc7ce" | 11.100
 
|-
 
|-
−
| 13+|| Never
+
| 10|| 5||style="background-color:#ffc7ce" | 9.098|| 9.512|| 9.830||style="background-color:#ffc7ce" | 10.098|| 10.334|| 10.547|| 10.743|| 10.926||style="background-color:#ffc7ce" | 11.098|| 11.260
−
|}
 
−
 
 
−
|-|9=
 
−
{|class="wikitable"
 
−
!guaranteed cost
 
−
!1st time guaranteeing is worth it (in {{Star}})
 
 
|-
 
|-
−
| 9|| 6th {{Star}}
+
| 9|| 6|| 9.174|| 9.588|| 9.906||style="background-color:#ffc7ce" | 10.174|| 10.410|| 10.624|| 10.820||style="background-color:#ffc7ce" | 11.003|| 11.174|| 11.337
 
|-
 
|-
−
| 10|| 6th {{Star}}
+
| 8|| 7|| 9.211|| 9.625|| 9.943||style="background-color:#ffc7ce" | 10.211|| 10.447|| 10.661|| 10.857||style="background-color:#ffc7ce" | 11.040|| 11.211|| 11.374
 
|-
 
|-
−
| 11|| 8th {{Star}}
+
| 10|| 6|| 9.418|| 9.832||style="background-color:#ffc7ce" | 10.150|| 10.418|| 10.654|| 10.867||style="background-color:#ffc7ce" | 11.063|| 11.246|| 11.418|| 11.580
−
|-
 
−
| 12|| 9th {{Star}}
 
 
|-
 
|-
−
| 13|| 9th {{Star}}
+
| 9|| 7|| 9.469|| 9.883||style="background-color:#ffc7ce" | 10.201|| 10.469|| 10.705|| 10.918||style="background-color:#ffc7ce" | 11.114|| 11.297|| 11.469|| 11.631
 
|-
 
|-
−
| 14|| {{MaxStar}}
+
| 8|| 8|| 9.485|| 9.899||style="background-color:#ffc7ce" | 10.217|| 10.485|| 10.721|| 10.935||style="background-color:#ffc7ce" | 11.131|| 11.314|| 11.485|| 11.648
 
|-
 
|-
−
| 15+|| Never
+
| 10|| 7|| 9.712||style="background-color:#ffc7ce" | 10.126|| 10.444|| 10.712|| 10.948||style="background-color:#ffc7ce" | 11.162|| 11.358|| 11.540|| 11.712|| 11.874
−
|}
 
−
 
 
−
|-|10=
 
−
{|class="wikitable"
 
−
!guaranteed cost
 
−
!1st time guaranteeing is worth it (in {{Star}})
 
 
|-
 
|-
−
| 10|| 6th {{Star}}
+
| 9|| 8|| 9.743||style="background-color:#ffc7ce" | 10.157|| 10.475|| 10.743|| 10.979||style="background-color:#ffc7ce" | 11.192|| 11.388|| 11.571|| 11.743|| 11.905
 
|-
 
|-
−
| 11|| 6th {{Star}}
+
| 10|| 8|| 9.986||style="background-color:#ffc7ce" | 10.400|| 10.718|| 10.986||style="background-color:#ffc7ce" | 11.222|| 11.436|| 11.632|| 11.814|| 11.986||style="background-color:#ffc7ce" | 12.148
 
|-
 
|-
−
| 12|| 7th {{Star}}
+
| 9|| 9||style="background-color:#ffc7ce" | 10.000|| 10.414|| 10.732||style="background-color:#ffc7ce" | 11.000|| 11.236|| 11.449|| 11.646|| 11.828||style="background-color:#ffc7ce" | 12.000|| 12.162
 
|-
 
|-
−
| 13|| 9th {{Star}}
+
| 10|| 9|| 10.243|| 10.658|| 10.975||style="background-color:#ffc7ce" | 11.243|| 11.479|| 11.693|| 11.889||style="background-color:#ffc7ce" | 12.072|| 12.243|| 12.406
 
|-
 
|-
−
| 14|| 9th {{Star}}
+
| 10|| 10|| 10.487|| 10.901||style="background-color:#ffc7ce" | 11.219|| 11.487|| 11.723|| 11.936||style="background-color:#ffc7ce" | 12.133|| 12.315|| 12.487|| 12.649
 +
|}
 +
 
 +
===The Breakpoint Myth===
 +
Breakpoints refer to points where upgrade bonuses reach whole numbers. These points are stressed because of the way the game rounds down the results of most formulas. The misconception is that a 1.99 bonus is just as good as a 1.00 bonus because of rounding. While there is a slight grain of truth to the myth, things get a little complex in practice. Due to how many multipliers and other bonuses are involved, trying to hit equipment upgrade breakpoints doesn't affect very much in the grand scheme of things.
 +
 
 +
The most important thing to do is to upgrade your equipment to certain critical points:
 +
* {{Star}}'''+1''' : Provides the biggest power increase (square-rooted only).
 +
* {{Star}}'''+6''' : The point when failures start to kick in and costs take a jump.
 +
* {{MaxStar}} : The final step to maximize upgrade bonuses.
 +
 
 +
=Screw Guaranteeing/Saving=
 +
In most cases, it is statistically cheaper to either toggle or not the "guaranteed improvement".
 +
 
 +
Reminder :
 +
{|class="wikitable" style="text-align:center" style="margin:auto"
 +
!Modification Level
 +
! 1★!! 2★!! 3★!! 4★!! 5★!! 6★!! 7★!! 8★!! 9★!! Max★!! Upgrade
 
|-
 
|-
−
| 15|| {{MaxStar}}
+
!Akashi
 +
| 100% || 100% || 100% || 100% || 95% || 90% || 80% || 77% || 72% || 60% || 50%
 
|-
 
|-
−
| 16|| {{MaxStar}}
+
!Akashi Kai
−
|-
+
| 100% || 100% || 100% || 100% || 100% || 95% || 90% || 82% || 77% || 67% || 62%
−
| 17+|| Never
 
 
|}
 
|}
  
−
|-|11=
+
Average screw cost when not guaranteed, assuming Akashi is Kai and not counting any equipment cost:
 +
 
 +
[[File:Average costs.png|750px|center]]
 +
 
 +
As expected, when the guaranteed cost is too high, not guaranteeing the upgrade is on average cheaper screw-wise, but this is not counting any potential equipment that may be lost and so may imply a higher screw cost.
 +
 
 +
Guaranteeing worthiness per base upgrade screw cost can then be defined as followed:
 +
<tabber>
 +
|-|General rules=
 +
When upgrading any equipment, Devmats and Screw are consumed, and eventually one or several equipment and consumables.
 +
*Since obtaining Devmats is not an issue, their cost is simply ignored.
 +
*Since failing an upgrade does not consume any consumables, they are ignored.
 +
*For equipment consumed :
 +
**If they are craftable or relatively easy to obtain, their cost is negligible in front of any screw cost.
 +
**If the equipment consumed is a very rare one, then guaranteeing the upgrade should be evident.
 +
**If the equipment consumed is itself made via Akashi's upgrades, '''then its total screw cost must be added to the base screw costs used in later examples.
 +
|-|0=
 
{|class="wikitable"
 
{|class="wikitable"
 
!guaranteed cost
 
!guaranteed cost
 
!1st time guaranteeing is worth it (in {{Star}})
 
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
| 11|| 6th {{Star}}
+
| 0|| 6th {{Star}}
 
|-
 
|-
−
| 12|| 6th {{Star}}
+
| 1+|| Never
 +
|}
 +
 
 +
|-|1=
 +
{|class="wikitable"
 +
!guaranteed cost
 +
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
| 13|| 7th {{Star}}
+
| 1|| 6th {{Star}}
 
|-
 
|-
−
| 14|| 8th {{Star}}
+
| 2+|| Never
 +
|}
 +
 
 +
|-|2=
 +
{|class="wikitable"
 +
!guaranteed cost
 +
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
| 15|| 9th {{Star}}
+
| 2|| 6th {{Star}}
 
|-
 
|-
−
| 16|| 9th {{Star}}
+
| 3|| {{MaxStar}}
 
|-
 
|-
−
| 17|| {{MaxStar}}
+
| 4+|| Never
−
|-
 
−
| 18+|| Never
 
 
|}
 
|}
  
−
|-|12=
+
|-|3=
 
{|class="wikitable"
 
{|class="wikitable"
 
!guaranteed cost
 
!guaranteed cost
 
!1st time guaranteeing is worth it (in {{Star}})
 
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
| 12|| 6th {{Star}}
+
| 3|| 6th {{Star}}
 
|-
 
|-
−
| 13|| 6th {{Star}}
+
| 4|| 8th {{Star}}
 
|-
 
|-
−
| 14|| 7th {{Star}}
+
| 5+|| Never
 +
|}
 +
 
 +
|-|4=
 +
{|class="wikitable"
 +
!guaranteed cost
 +
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
| 15|| 8th {{Star}}
+
| 4|| 6th {{Star}}
 
|-
 
|-
−
| 16|| 9th {{Star}}
+
| 5|| 8th {{Star}}
 
|-
 
|-
−
| 17|| 9th {{Star}}
+
| 6|| {{MaxStar}}
 
|-
 
|-
−
| 18|| {{MaxStar}}
+
| 7+|| Never
−
|-
 
−
| 19|| {{MaxStar}}
 
−
|-
 
−
| 20+|| Never
 
 
|}
 
|}
  
−
|-|13=
+
|-|5=
 
{|class="wikitable"
 
{|class="wikitable"
 
!guaranteed cost
 
!guaranteed cost
 
!1st time guaranteeing is worth it (in {{Star}})
 
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
| 13|| 6th {{Star}}
+
| 5|| 6th {{Star}}
 
|-
 
|-
−
| 14|| 6th {{Star}}
+
| 6|| 7th {{Star}}
 
|-
 
|-
−
| 15|| 7th {{Star}}
+
| 7|| 9th {{Star}}
 
|-
 
|-
−
| 16|| 8th {{Star}}
+
| 8|| {{MaxStar}}
 +
|-
 +
| 9+|| Never
 +
|}
 +
 
 +
|-|6=
 +
{|class="wikitable"
 +
!guaranteed cost
 +
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
| 17|| 9th {{Star}}
+
| 6|| 6th {{Star}}
 
|-
 
|-
−
| 18|| 9th {{Star}}
+
| 7|| 7th {{Star}}
 
|-
 
|-
−
| 19|| 9th {{Star}}
+
| 8|| 9th {{Star}}
 
|-
 
|-
−
| 20|| {{MaxStar}}
+
| 9|| {{MaxStar}}
 
|-
 
|-
−
| 21+|| Never
+
| 10+|| Never
 
|}
 
|}
  
−
|-|14=
+
|-|7=
 
{|class="wikitable"
 
{|class="wikitable"
 
!guaranteed cost
 
!guaranteed cost
 
!1st time guaranteeing is worth it (in {{Star}})
 
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
| 14|| 6th {{Star}}
+
| 7|| 6th {{Star}}
 
|-
 
|-
−
| 15|| 6th {{Star}}
+
| 8|| 7th {{Star}}
 
|-
 
|-
−
| 16|| 7th {{Star}}
+
| 9|| 8th {{Star}}
 
|-
 
|-
−
| 17|| 7th {{Star}}
+
| 10|| 9th {{Star}}
 
|-
 
|-
−
| 18|| 8th {{Star}}
+
| 11|| {{MaxStar}}
 
|-
 
|-
−
| 19|| 9th {{Star}}
+
| 12+|| Never
−
|-
 
−
| 20|| 9th {{Star}}
 
−
|-
 
−
| 21|| {{MaxStar}}
 
−
|-
 
−
| 22|| {{MaxStar}}
 
−
|-
 
−
| 23+|| Never
 
 
|}
 
|}
  
−
|-|15=
+
|-|8=
 
{|class="wikitable"
 
{|class="wikitable"
 
!guaranteed cost
 
!guaranteed cost
 
!1st time guaranteeing is worth it (in {{Star}})
 
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
| 15|| 6th {{Star}}
+
| 8|| 6th {{Star}}
 
|-
 
|-
−
| 16|| 6th {{Star}}
+
| 9|| 7th {{Star}}
 
|-
 
|-
−
| 17|| 7th {{Star}}
+
| 10|| 8th {{Star}}
 
|-
 
|-
−
| 18|| 7th {{Star}}
+
| 11|| 9th {{Star}}
 
|-
 
|-
−
| 19|| 8th {{Star}}
+
| 12|| {{MaxStar}}
 +
|-
 +
| 13+|| Never
 +
|}
 +
 
 +
|-|9=
 +
{|class="wikitable"
 +
!guaranteed cost
 +
!1st time guaranteeing is worth it (in {{Star}})
 +
|-
 +
| 9|| 6th {{Star}}
 
|-
 
|-
−
| 20|| 9th {{Star}}
+
| 10|| 6th {{Star}}
 
|-
 
|-
−
| 21|| 9th {{Star}}
+
| 11|| 8th {{Star}}
 
|-
 
|-
−
| 22|| 9th {{Star}}
+
| 12|| 9th {{Star}}
 
|-
 
|-
−
| 23|| {{MaxStar}}
+
| 13|| 9th {{Star}}
 
|-
 
|-
−
| 24|| {{MaxStar}}
+
| 14|| {{MaxStar}}
 
|-
 
|-
−
| 25+|| Never
+
| 15+|| Never
 
|}
 
|}
  
−
|-|16+=
+
|-|10=
−
There is only one equipment with a base brut screw cost above 15 (the [[SK Radar]]), and as every equipment consuming expensive "Akashi exclusive" or rare equipment, the average screw cost is less important that the raw cost, meaning that guaranteeing the upgrade is always worth it
+
{|class="wikitable"
−
</tabber>
+
!guaranteed cost
−
 
+
!1st time guaranteeing is worth it (in {{Star}})
−
=Improvement Guide=
 
−
Several rankings for equipment improvements. Do note that:
 
−
*Equipments to upgrade/improve are ranked from most advisable at '''1''', to least advisable at '''10'''.
 
−
*Many equipment possibly improbable are omitted, as they are either:
 
−
**Already listed in one of the lists,
 
−
**Are obtainable elsewhere for cheaper,
 
−
**Are just not worth improving or upgrading.
 
−
*Some equipment can be in several lists.
 
−
 
 
−
==Quests Improvements==
 
−
Several [[Quests]] require specific equipment to be upgraded in order to be completed, while others simply allow the use of upgraded equipment for conversion.
 
−
 
 
−
===Quests Requirements===
 
−
Here is the list of equipment that required to be improved to complete some quests:
 
−
*''All improvements are lost during conversions.
 
−
 
 
−
{|class="wikitable mw-collapsible mw-collapsed" style="margin:auto"
 
−
|+Quests Requirements
 
−
!Quest!!Equipment!!{{Star}} Level !!Notes
 
 
|-
 
|-
−
|{{Q|F36}} ||[[61cm Triple (Oxygen) Torpedo Mount]]<br>[[61cm Quintuple (Oxygen) Torpedo Mount]] ||{{MaxStar}} ||Both
+
| 10|| 6th {{Star}}
 
|-
 
|-
−
|{{Q|F51}} ||[[Type 2 Seaplane Fighter Kai]] ||{{MaxStar}}
+
| 11|| 6th {{Star}}
 
|-
 
|-
−
|{{Q|F52}} ||[[Type 2 Seaplane Fighter Kai]] ||{{MaxStar}}
+
| 12|| 7th {{Star}}
 
|-
 
|-
−
|{{Q|F58}} ||[[Zuiun (634 Air Group)]] ||{{MaxStar}}
+
| 13|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|F61}} ||[[F61]] ||{{MaxStar}}
+
| 14|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|F63}} ||[[F6F-5]] ||{{MaxStar}}
+
| 15|| {{MaxStar}}
 
|-
 
|-
−
|{{Q|F74}} ||[[Prototype 41cm Triple Gun Mount]] ||{{MaxStar}}
+
| 16|| {{MaxStar}}
 
|-
 
|-
−
|{{Q|F76}} ||[[12.7cm Twin Gun Mount Model A Kai 2]] ||{{MaxStar}}
+
| 17+|| Never
 +
|}
 +
 
 +
|-|11=
 +
{|class="wikitable"
 +
!guaranteed cost
 +
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
|{{Q|F78}} ||[[12.7cm Twin Gun Mount Model B Kai 2]] ||{{MaxStar}}
+
| 11|| 6th {{Star}}
 
|-
 
|-
−
|{{Q|F87}} ||[[Zuiun Kai Ni (634 Air Group)]] ||{{MaxStar}}
+
| 12|| 6th {{Star}}
 
|-
 
|-
−
|{{Q|F101}} ||[[Type 0 Reconnaissance Seaplane Model 11B]] ||{{MaxStar}}
+
| 13|| 7th {{Star}}
 
|-
 
|-
−
|{{Q|F103}} ||[[Type 3 Active Sonar]] ||{{MaxStar}}
+
| 14|| 8th {{Star}}
 +
|-
 +
| 15|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|F104}} ||[[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]] ||{{MaxStar}}
+
| 16|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|F105}} ||[[Type 1 Land-based Attack Aircraft Model 22A]] ||{{MaxStar}}|| Requires to craft 8 [[Tenzan Model 12A]]
+
| 17|| {{MaxStar}}
 
|-
 
|-
−
|{{Q|F111}} ||[[Type 98 Reconnaissance Seaplane (Night Recon)]]<br>[[Type 0 Reconnaissance Seaplane Model 11B]] ||{{MaxStar}} ||Both
+
| 18+|| Never
 +
|}
 +
 
 +
|-|12=
 +
{|class="wikitable"
 +
!guaranteed cost
 +
!1st time guaranteeing is worth it (in {{Star}})
 
|-
 
|-
−
|{{Q|F116}} ||[[35.6cm Twin Gun Mount Kai San (Dazzle Camouflage)]] ||{{Star}}+3 ||All {{Star}} past 3 are lost on conversion
+
| 12|| 6th {{Star}}
 
|-
 
|-
−
|{{Q|F117}} ||[[Late Model Bow Torpedo Mount (6 tubes)]] ||{{MaxStar}}
+
| 13|| 6th {{Star}}
 
|-
 
|-
−
|{{Q|Fq1}} ||[[Type 96 Fighter]] ||{{MaxStar}}
+
| 14|| 7th {{Star}}
 
|-
 
|-
−
|{{Q|Fq7}} ||[[12.7cm Twin Gun Mount Model A Kai 2]] ||{{MaxStar}}
+
| 15|| 8th {{Star}}
 
|-
 
|-
−
|{{Q|Fy2}} ||[[Swordfish]] ||{{MaxStar}}
+
| 16|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|Fy10}} ||[[Type 0 Reconnaissance Seaplane]] ||{{MaxStar}}
+
| 17|| 9th {{Star}}
−
|}
 
−
 
 
−
===Ultra Highly Advised===
 
−
'''It is highly recommended to improve the following equipment to {{MaxStar}} before proceeding with those quests as {{TextGlow|any {{Star}} are carried over to the reward|black|text-colour=lime|glow-size=2px}}, and {{color|red|the rewards cannot be [[Improvement|improved]] afterward!}}
 
−
 
 
−
{|class="wikitable mw-collapsible mw-collapsed" style="margin:auto"
 
−
|+Ultra Highly Advised
 
−
!Quest!!Equipment
 
 
|-
 
|-
−
|{{Q|F13}} ||[[Type 97 Torpedo Bomber (Tomonaga Squadron)]]
+
| 18|| {{MaxStar}}
 
|-
 
|-
−
|{{Q|F14}} ||[[Type 99 Dive Bomber (Egusa Squadron)]]
+
| 19|| {{MaxStar}}
 
|-
 
|-
−
|{{Q|F15}} ||[[Zero Fighter Model 52C (601 Air Group)]]
+
| 20+|| Never
 
|}
 
|}
  
−
===Highly Advised===
+
|-|13=
−
In those quests, {{TextGlow|any {{Star}} the equipment has, are carried over to the reward.|black|text-colour=lime|glow-size=2px}} It is therefore advised to upgrade the equipment before completing the quest, as it is cheaper to do so.
+
{|class="wikitable"
−
 
+
!guaranteed cost
−
{|class="wikitable mw-collapsible mw-collapsed" style="margin:auto"
+
!1st time guaranteeing is worth it (in {{Star}})
−
|+Highly Advised
 
−
!Quest!!Equipment!!Notes
 
 
|-
 
|-
−
|{{Q|F19}} ||[[Type 97 Torpedo Bomber (Murata Squadron)]] ||Not improvable yet
+
| 13|| 6th {{Star}}
 
|-
 
|-
−
|{{Q|F24}} ||[[Type 0 Fighter Model 21 (Skilled)]] ||rowspan=3|It is advised to start improvements with Fm1 for this chain.
+
| 14|| 6th {{Star}}
 
|-
 
|-
−
|{{Q|F26}} ||[[Type 0 Fighter Model 52 (Skilled)]]
+
| 15|| 7th {{Star}}
 
|-
 
|-
−
|{{Q|F27}} ||[[Zero Fighter Model 52C (w/ Iwai Flight)]]
+
| 16|| 8th {{Star}}
 
|-
 
|-
−
|{{Q|F28}} ||[[Type 0 Fighter Model 21 (Skilled)]] ||rowspan=3|It is advised to start improvements with Fm1 for this chain.
+
| 17|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|F29}} ||[[Zero Fighter Model 21 (w/ Iwamoto Flight)]]
+
| 18|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|F30}} ||[[Zero Fighter Model 52A (w/ Iwamoto Flight)]]
+
| 19|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|Fm1}} ||[[Type 0 Fighter Model 21]] ||
+
| 20|| {{MaxStar}}
 
|-
 
|-
−
|{{Q|Fm2}} ||[[Type 0 Fighter Model 21 (Skilled)]] ||It is advised to start improvements with Fm1.
+
| 21+|| Never
 
|}
 
|}
  
−
===Traps===
+
|-|14=
−
Some quests allow the use of upgraded equipment for completion, but will not keep any of the current equipment improvements, and so should be cleared with unimproved equipment:
+
{|class="wikitable"
−
 
+
!guaranteed cost
−
{|class="wikitable mw-collapsible mw-collapsed" style="margin:auto"
+
!1st time guaranteeing is worth it (in {{Star}})
−
|+Traps
 
−
!Quest!!Equipment
 
 
|-
 
|-
−
|{{Q|F40}} ||[[Type 1 Land-based Attack Aircraft]]
+
| 14|| 6th {{Star}}
 +
|-
 +
| 15|| 6th {{Star}}
 
|-
 
|-
−
|{{Q|F62}} ||[[TBF]]
+
| 16|| 7th {{Star}}
 
|-
 
|-
−
|{{Q|F86}} ||[[Suisei Model 12A]]
+
| 17|| 7th {{Star}}
 
|-
 
|-
−
|{{Q|F89}} ||[[7.7mm Machine Gun]]
+
| 18|| 8th {{Star}}
 
|-
 
|-
−
|{{Q|F107}} ||[[Ki-102 B]]
+
| 19|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|F112}} ||[[5inch Single Gun Mount Mk.30]]
+
| 20|| 9th {{Star}}
 
|-
 
|-
−
|{{Q|F115}} ||[[Smoke Generator (Smoke Screen)]]
+
| 21|| {{MaxStar}}
 
|-
 
|-
−
|{{Q|Fq2}} ||[[Type 96 Land-based Attack Aircraft]]
+
| 22|| {{MaxStar}}
 
|-
 
|-
−
|{{Q|Fq5}} ||[[Type 0 Fighter Model 52]]
+
| 23+|| Never
 
|}
 
|}
  
−
==Collection Improvements==
+
|-|15=
−
Some equipment are only obtainable via Akashi upgrades.
+
{|class="wikitable"
−
*''The list can be found [[Equipment#Unbuildable Equipment|here]]
+
!guaranteed cost
−
*If completing the Kancodex is a personal goal, then crafting those equipment becomes a necessity in the long run.
+
!1st time guaranteeing is worth it (in {{Star}})
−
*Making all those equipment should NOT be a priority over the rest, as most are not very useful or even useless.
 
−
*See below for when making those equipment overlap with advised improvements.
 
−
 
 
−
==Upgrade Advice==
 
−
Here is a list of improvements that have as a main goal to "'''upgrade'''" said equipment into a better one.
 
−
*Do that certain upgrades can be done in chains, with part of the chain ranging from worse than the upgrade, equivalent to, or even better.
 
−
*The "Total Srew Cost" is given as an indication, but does not reflect "real" with [[#Screw Guaranteeing/Saving|guaranteeing savings]] and consumed equipment being great factors to take into account.
 
−
*Several good equipment are not listed there as they can be obtained otherwise more cheaply, or because the upgrade is just not worth it.
 
−
 
 
−
{|class="wikitable mw-collapsible mw-collapsed sortable" style="margin:auto"
 
−
|+Upgrade Advice
 
 
|-
 
|-
−
! Priority Level
+
| 15|| 6th {{Star}}
−
! Equipment Goal
 
−
! Equipment To Upgrade
 
−
! Total Srew Cost
 
−
! Further Improvable?
 
−
! Notes
 
 
|-
 
|-
−
! 6
+
| 16|| 6th {{Star}}
−
| [[41cm Triple Gun Mount Kai]]
 
−
| [[Prototype 41cm Triple Gun Mount]]
 
−
| 69
 
−
| Yes
 
−
| A good gun for BB(V)
 
 
|-
 
|-
−
! 5
+
| 17|| 7th {{Star}}
−
| [[41cm Twin Gun Mount Kai 2]]
+
|-
−
| [[41cm Triple Gun Mount Kai]]
+
| 18|| 7th {{Star}}
−
| 92
 
−
| Yes
 
−
| A good gun for BB(V), especially IJN ones
 
−
*Consumes 1 [[Prototype 46cm Twin Gun Mount]]
 
 
|-
 
|-
−
! 4
+
| 19|| 8th {{Star}}
−
| [[41cm Triple Gun Mount Kai 2]]
 
−
| [[41cm Triple Gun Mount Kai]]
 
−
| 93
 
−
| Yes
 
−
| A good gun for BB(V), especially IJN ones
 
 
|-
 
|-
−
! 2
+
| 20|| 9th {{Star}}
−
| [[12cm 30 Tube Rocket Launcher Kai 2]]
 
−
| [[12cm 30-tube Rocket Launcher]]
 
−
| 40
 
−
| Yes
 
−
| Needed to trigger the "[[AARB]]" that negate some plane damages
 
−
*A goal is to 6, enough to equip a full "carrier fleet".
 
 
|-
 
|-
−
! 1
+
| 21|| 9th {{Star}}
−
| [[Type 2 Seaplane Fighter Kai]]
 
−
| [[Type 0 Reconnaissance Seaplane]]
 
−
| 40
 
−
| Yes
 
−
| Great to maintain airpower without carriers
 
−
*The goal is to have at least 6 good [[SPF]]
 
 
|-
 
|-
−
! 1
+
| 22|| 9th {{Star}}
−
| [[Kyoufuu Kai]]
 
−
| [[Type 2 Seaplane Fighter Kai]]
 
−
| 77
 
−
| Yes
 
−
| Great to maintain airpower without carriers
 
−
*The goal is to have at least 6 good [[SPF]]
 
 
|-
 
|-
−
! 3
+
| 23|| {{MaxStar}}
−
| [[Type 1 Armor Piercing Shell]]
 
−
| [[Type 91 Armor Piercing Shell]]
 
−
| 22
 
−
| Yes
 
−
| Good AP shell, cheap to make
 
 
|-
 
|-
−
! 10
+
| 24|| {{MaxStar}}
−
| [[Type 1 Armor Piercing Shell Kai]]
 
−
| [[Type 1 Armor Piercing Shell]]
 
−
| 35
 
−
| Yes
 
−
| The best AP shell, but extremely expensive
 
 
|-
 
|-
−
! 1
+
| 25+|| Never
−
| [[Special Type 2 Amphibious Tank]]
+
|}
−
| [[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]]
+
 
−
| 39
+
|-|16+=
−
| Yes
+
There is only one equipment with a base brut screw cost above 15 (the [[SK Radar]]), and as every equipment consuming expensive "Akashi exclusive" or rare equipment, the average screw cost is less important that the raw cost, meaning that guaranteeing the upgrade is always worth it
−
| Geat against [[Installation]]s
+
</tabber>
−
|-
+
 
−
! 1
+
=Improvement Guide=
−
| [[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]]
+
{{imbox
−
| [[Daihatsu Landing Craft]]
+
| type = content
−
| 24
+
| text = The following guide was made by few players and has not been scrutinized enough.<br>Beware of potential biases.
−
| Yes
+
}}
−
| Geat against [[Installation]]s
+
Several rankings for equipment improvements. Do note that:
−
|-
+
*Equipments to upgrade/improve are ranked from most advisable at '''1''', to least advisable at '''10'''.
−
! 4
+
*Many equipment possibly improbable are omitted, as they are either:
−
| [[Toku Daihatsu Landing Craft]]
+
**Already listed in one of the lists,
−
| [[Daihatsu Landing Craft]]
+
**Are obtainable elsewhere for cheaper,
−
| 29
+
**Are just not worth improving or upgrading.
−
| Yes
+
*Some equipment can be in several lists.
−
| Good for [[Expeditions]]
+
 
 +
==Quests Improvements==
 +
Several [[Quests]] require specific equipment to be upgraded in order to be completed, while others simply allow the use of upgraded equipment for conversion.
 +
 
 +
===Quests Requirements===
 +
Here is the list of equipment that required to be improved to complete some quests:
 +
*''All improvements are lost during conversions.
 +
 
 +
{|class="wikitable mw-collapsible mw-collapsed" style="margin:auto"
 +
|+Quests Requirements
 +
!Quest!!Equipment!!{{Star}} Level !!Notes
 
|-
 
|-
−
! 5
+
|{{Q|F36}} ||[[61cm Triple (Oxygen) Torpedo Mount]]<br>[[61cm Quintuple (Oxygen) Torpedo Mount]] ||{{MaxStar}} ||Both
−
| [[Armed Daihatsu]]
 
−
| [[Daihatsu Landing Craft]]
 
−
| 23
 
−
| Yes
 
−
| Geat against [[Installation]]s and [[PT Imp]]s
 
−
*Consumes a [[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]]
 
 
|-
 
|-
−
! 5
+
|{{Q|F51}} ||[[Type 2 Seaplane Fighter Kai]] ||{{MaxStar}}
−
| [[F6F-5]]
+
|-
−
| [[F6F-3]]
+
|{{Q|F52}} ||[[Type 2 Seaplane Fighter Kai]] ||{{MaxStar}}
−
| 70
 
−
| Yes
 
−
| +10 airpower fighter
 
 
|-
 
|-
−
! 7
+
|{{Q|F58}} ||[[Zuiun (634 Air Group)]] ||{{MaxStar}}
−
| [[Type 0 Fighter Model 64 (Skilled Fighter-bomber)]]
 
−
| [[Type 0 Fighter Model 64 (Air Superiority Fighter Specification)]]
 
−
| 70
 
−
| Yes
 
−
| Good fighter-bomber with [[AAR]]
 
 
|-
 
|-
−
! 5
+
|{{Q|F61}} ||[[F6F-3]] ||{{MaxStar}}
−
| [[Shiden Kai 4]]
 
−
| [[Shiden Kai 2]]
 
−
| 59
 
−
| Yes
 
−
| +10 airpower fighter
 
 
|-
 
|-
−
! 8
+
|{{Q|F63}} ||[[F6F-5]] ||{{MaxStar}}
−
| [[Seafire Mk.III Kai]]
 
−
| [[Spitfire Mk.V]]
 
−
| 49
 
−
| No
 
−
| Good fighter, with bonuses in some "European Events"
 
 
|-
 
|-
−
! 3
+
|{{Q|F74}} ||[[Prototype 41cm Triple Gun Mount]] ||{{MaxStar}}
−
| [[Spitfire Mk.V]]
 
−
| [[Spitfire Mk.I]]
 
−
| 33
 
−
| Yes
 
−
| Great interceptor, further improbable, with bonuses in some "European Events"
 
 
|-
 
|-
−
! 6
+
|{{Q|F76}} ||[[12.7cm Twin Gun Mount Model A Kai 2]] ||{{MaxStar}}
−
| [[Re.2005 Kai]]
 
−
| [[Re.2001 CB Kai]]
 
−
| 60
 
−
| No
 
−
| +11 airpower fighter, with bonuses in some "European Events"
 
 
|-
 
|-
−
! 10
+
|{{Q|F78}} ||[[12.7cm Twin Gun Mount Model B Kai 2]] ||{{MaxStar}}
−
| [[Re.2001 CB Kai]]
 
−
| [[Re.2001 OR Kai]]
 
−
| 49
 
−
| Yes
 
−
| Only used to make the [[Re.2005 Kai]]
 
 
|-
 
|-
−
! 10
+
|{{Q|F87}} ||[[Zuiun Kai Ni (634 Air Group)]] ||{{MaxStar}}
−
| [[Fulmar (Reconnaissance Fighter/Skilled)]]
 
−
| [[Fulmar]]
 
−
| 39
 
−
| No
 
−
| Only useful in some "European Events"
 
 
|-
 
|-
−
! 9
+
|{{Q|F101}} ||[[Type 0 Reconnaissance Seaplane Model 11B]] ||{{MaxStar}}
−
| [[Type 99 Dive Bomber Model 22 (Skilled)]]
 
−
| [[Type 99 Dive Bomber Model 22]]
 
−
| 36
 
−
| Yes
 
−
| [[Anti-Installation]] dive-bomber
 
 
|-
 
|-
−
! 6
+
|{{Q|F103}} ||[[Type 3 Active Sonar]] ||{{MaxStar}}
−
| [[SB2C-3]]
 
−
| [[SBD-5]]
 
−
| 43
 
−
| No
 
−
| [[Anti-Installation]] dive-bomber, with bonuses in some "European Events"
 
 
|-
 
|-
−
! 8
+
|{{Q|F104}} ||[[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]] ||{{MaxStar}}
−
| [[Prototype Type 97 Torpedo Bomber Kai (Skilled) No. 3 Model E (w/ Type 6 Airborne Radar Kai)]]
 
−
| [[Type 97 Torpedo Bomber (Skilled)]]
 
−
| 45
 
−
| No
 
−
| A good night bomber
 
 
|-
 
|-
−
! 10
+
|{{Q|F105}} ||[[Type 1 Land-based Attack Aircraft Model 22A]] ||{{MaxStar}}|| Requires to craft 8 [[Tenzan Model 12A]]
−
| [[Tenzan Model 12A]]
 
−
| [[Tenzan]]
 
−
| 34
 
−
| Yes
 
−
| Ok torpedo bomber, mostly used to improve the [[Type 1 Land-based Attack Aircraft Model 22A]]
 
 
|-
 
|-
−
! 9
+
|{{Q|F111}} ||[[Type 98 Reconnaissance Seaplane (Night Recon)]]<br>[[Type 0 Reconnaissance Seaplane Model 11B]] ||{{MaxStar}} ||Both
−
| [[Tenzan Model 12A Kai (w/ Type 6 Airborne Radar Kai)]]
 
−
| [[Prototype Type 97 Torpedo Bomber Kai No. 3 Model E (w/ Type 6 Airborne Radar Kai)]]
 
−
| 63
 
−
| No
 
−
| Best craftable night bomber
 
 
|-
 
|-
−
! 5
+
|{{Q|F116}} ||[[35.6cm Twin Gun Mount Kai San (Dazzle Camouflage)]] ||{{Star}}+3 ||All {{Star}} past 3 are lost on conversion
−
| [[Jet Keiun Kai]]
 
−
| [[Prototype Keiun (Carrier-based Reconnaissance Model)]]
 
−
| 86
 
−
| No
 
−
| A [[Jet]], coming with unique behaviors and great stats
 
 
|-
 
|-
−
! 8
+
|{{Q|F117}} ||[[Late Model Bow Torpedo Mount (6 tubes)]] ||{{MaxStar}}
−
| [[Type 2 Two-seat Fighter Toryuu Model C]]
 
−
| [[Type 2 Two-seat Fighter Toryuu]]
 
−
| 33
 
−
| Yes
 
−
| OK interceptor
 
 
|-
 
|-
−
! 3
+
|{{Q|F120}} ||[[12.7cm Twin Gun Mount Model D Kai 2]] ||{{Star}}+8 ||All {{Star}} past 8 are lost on conversion
−
| [[Ki-96]]
 
−
| [[Type 2 Two-seat Fighter Toryuu Model C]]
 
−
| 38
 
−
| Yes
 
−
| Best craftable interceptor
 
 
|-
 
|-
−
! 8
+
|{{Q|F121}} ||[[Type 13 Air Radar Kai (Late Model)]] ||{{Star}}+4 ||All {{Star}} past 4 are lost on conversion
−
| [[Ki-102 B]]
 
−
| [[Ki-96]]
 
−
| 60
 
−
| No
 
−
| Good LBB stat-wise, but with low range
 
 
|-
 
|-
−
! 5
+
|{{Q|F122}} ||[[Type 22 Surface Radar Kai 4]] ||{{MaxStar}}
−
| [[Type 1 Fighter Hayabusa Model II]]
 
−
| [[Type 1 Fighter Hayabusa Model II]]
 
−
| 39
 
−
| Yes
 
−
| Good interceptor
 
 
|-
 
|-
−
! 6
+
|{{Q|F122}} ||[[Type 0 Reconnaissance Seaplane Model 11B]] ||{{MaxStar}}
−
| [[Shiden Kai (343 Air Group) 301st Fighter Squadron]]
 
−
| [[Shiden Model 21 Shiden Kai]]
 
−
| 71
 
−
| No
 
−
| Great interceptor
 
 
|-
 
|-
−
! 7
+
|{{Q|Fq1}} ||[[Type 96 Fighter]] ||{{MaxStar}}
−
| [[Do 217 E-5 + Hs293 Initial Model]]
 
−
| [[Do 17 Z-2]]
 
−
| 63
 
−
| No
 
−
| A great LBB with [[AAR]] but with low range, with bonuses in some "European Events"
 
 
|-
 
|-
−
! 10
+
|{{Q|Fq7}} ||[[12.7cm Twin Gun Mount Model A Kai 2]] ||{{MaxStar}}
−
| [[Type 1 Land-based Attack Aircraft Model 34]]
 
−
| [[Type 1 Land-based Attack Aircraft Model 22A]]
 
−
| 56
 
−
| Yes
 
−
| Best craftable LBB, but is the most expensive equipment in the game:
 
−
*Consumes 8 [[Tenzan Model 12A]]
 
 
|-
 
|-
−
! 7
+
|{{Q|Fy2}} ||[[Swordfish]] ||{{MaxStar}}
−
| [[Type 4 Heavy Bomber Hiryuu (Skilled)]]
 
−
| [[Type 4 Heavy Bomber Hiryuu]]
 
−
| 72
 
−
| No
 
−
| A great LBB with [[AAR]] but with low range
 
 
|-
 
|-
−
! 10
+
|{{Q|Fy10}} ||[[Type 0 Reconnaissance Seaplane]] ||{{MaxStar}}
−
| [[12cm Single Gun Mount Kai 2]]
+
|}
−
| [[12cm Single Gun Mount]]
+
 
−
| 19
+
===Ultra Highly Advised===
−
| Yes
+
'''It is highly recommended to improve the following equipment to {{MaxStar}} before proceeding with those quests as {{TextGlow|any {{Star}} are carried over to the reward|black|text-colour=lime|glow-size=2px}}, and {{color|red|the rewards cannot be [[Improvement|improved]] afterward!}}
−
| A good very niche small gun
+
 
 +
{|class="wikitable mw-collapsible mw-collapsed" style="margin:auto"
 +
|+Ultra Highly Advised
 +
!Quest!!Equipment
 
|-
 
|-
−
! 9
+
|{{Q|F13}} ||[[Type 97 Torpedo Bomber (Tomonaga Squadron)]]
−
| [[Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4]]
 
−
| [[12.7cm Twin Gun Mount Model A Kai 2]]
 
−
| 38
 
−
| Yes
 
−
| A great very niche small gun
 
 
|-
 
|-
−
! 3
+
|{{Q|F14}} ||[[Type 99 Dive Bomber (Egusa Squadron)]]
−
| [[5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37]]
 
−
| [[5inch Single Gun Mount Mk.30 Kai]]
 
−
| 101
 
−
| No
 
−
| Best [[AACI]] small gun
 
 
|-
 
|-
−
! 9
+
|{{Q|F15}} ||[[Zero Fighter Model 52C (601 Air Group)]]
−
| [[12.7cm Twin Gun Mount Model C Kai 3]]
+
|}
−
| [[12.7cm Twin Gun Mount Model C Kai 2]]
+
 
−
| 34
+
===Highly Advised===
−
| Yes
+
In those quests, {{TextGlow|any {{Star}} the equipment has, are carried over to the reward.|black|text-colour=lime|glow-size=2px}} It is therefore advised to upgrade the equipment before completing the quest, as it is cheaper to do so.
−
| A good small gun, with great bonuses on some IJN ships
+
 
 +
{|class="wikitable mw-collapsible mw-collapsed" style="margin:auto"
 +
|+Highly Advised
 +
!Quest!!Equipment!!Notes
 +
|-
 +
|{{Q|F19}} ||[[Type 97 Torpedo Bomber (Murata Squadron)]] ||Not improvable yet
 
|-
 
|-
−
! 5
+
|{{Q|F24}} ||[[Type 0 Fighter Model 21 (Skilled)]] ||rowspan=3|It is advised to start improvements with Fm1 for this chain.
−
| [[14cm Twin Gun Mount Kai]]
 
−
| [[14cm Twin Gun Mount]]
 
−
| 17
 
−
| Yes
 
−
| Great medium gun on some IJN ships,
 
−
*Rarely more than 4 are needed
 
 
|-
 
|-
−
! 3
+
|{{Q|F26}} ||[[Type 0 Fighter Model 52 (Skilled)]]
−
| [[15.2cm Twin Gun Mount Kai 2]]
 
−
| [[15.2cm Twin Gun Mount Kai]]
 
−
| 44
 
−
| Yes
 
−
| Best CL gun
 
 
|-
 
|-
−
! 3
+
|{{Q|F27}} ||[[Zero Fighter Model 52C (w/ Iwai Flight)]]
−
| [[15.2cm Twin Gun Mount Kai]]
+
*Best obtainable fighter in the game
−
| [[15.2cm Twin Gun Mount]]
 
−
| 36
 
−
| Yes
 
−
| Best CL gun
 
 
|-
 
|-
−
! 9
+
|{{Q|F28}} ||[[Type 0 Fighter Model 21 (Skilled)]] ||rowspan=3|It is advised to start improvements with Fm1 for this chain.
−
| [[15.5cm Triple Gun Mount Kai]]
 
−
| [[15.5cm Triple Gun Mount]]
 
−
| 34
 
−
| Yes
 
 
|-
 
|-
−
! 8
+
|{{Q|F29}} ||[[Zero Fighter Model 21 (w/ Iwamoto Flight)]]
−
| [[15.5cm Triple Secondary Gun Mount Kai]]
 
−
| [[15.5cm Triple Secondary Gun Mount]]
 
−
| 34
 
−
| Yes
 
−
| Good surface secondary gun
 
 
|-
 
|-
−
! 5
+
|{{Q|F30}} ||[[Zero Fighter Model 52A (w/ Iwamoto Flight)]]
−
| [[15.5cm Triple Secondary Gun Mount Kai 2]]
 
−
| [[15.5cm Triple Secondary Gun Mount Kai]]
 
−
| 53
 
−
| No
 
−
| Best surface secondary gun
 
 
|-
 
|-
−
! 10
+
|{{Q|Fm1}} ||[[Type 0 Fighter Model 21]] ||Is the start of most improvement quests chains
−
| [[8inch Triple Gun Mount Mk.9 mod.2]]
 
−
| [[8inch Triple Gun Mount Mk.9]]
 
−
| 42
 
−
| Yes
 
−
| Best cruiser gun for FP
 
 
|-
 
|-
−
! 7
+
|{{Q|Fm2}} ||[[Type 0 Fighter Model 21 (Skilled)]] ||It is advised to start improvements with Fm1.
−
| [[35.6cm Triple Gun Mount Kai (Dazzle Camouflage)]]
+
*Good [[LBAS]] fighter with 7 range
−
| [[35.6cm Twin Gun Mount (Dazzle Camouflage)]]
+
|}
−
| 43
+
 
−
| Yes
+
===Traps===
−
| Great gun for FBB
+
Some quests allow the use of upgraded equipment for completion, but will not keep any of the current equipment improvements, and so should be cleared with unimproved equipment:
 +
 
 +
{|class="wikitable mw-collapsible mw-collapsed" style="margin:auto"
 +
|+Traps
 +
!Quest!!Equipment!!Notes
 +
|-
 +
|{{Q|F40}} ||[[Type 1 Land-based Attack Aircraft]]
 
|-
 
|-
−
! 6
+
|{{Q|F62}} ||[[TBF]]
−
| [[35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage)]]
 
−
| [[35.6cm Triple Gun Mount Kai (Dazzle Camouflage)]]
 
−
| 70
 
−
| Yes
 
−
| Great gun for FBB
 
 
|-
 
|-
−
! 9
+
|{{Q|F86}} ||[[Suisei Model 12A]]
−
| [[16inch Mk.VIII Twin Gun Mount Kai]]
 
−
| [[16inch Mk.V Twin Gun Mount]]
 
−
| 56
 
−
| Yes
 
−
| Good gun for BB(V)
 
 
|-
 
|-
−
! 10
+
|{{Q|F89}} ||[[7.7mm Machine Gun]]
−
| [[38.1cm Mk.I/N Twin Gun Mount Kai]]
+
|-
−
| [[38.1cm Mk.I Twin Gun Mount]]
+
|{{Q|F107}} ||[[Ki-102 B]]
−
| 48
+
|-
−
| Yes
+
|{{Q|F112}} ||[[5inch Single Gun Mount Mk.30]]
−
| Good gun for FBB
 
 
|-
 
|-
−
! 9
+
|{{Q|F115}} ||[[Smoke Generator (Smoke Screen)]]
−
| [[16inch Mk.I Triple Gun Mount Kai + FCR Type 284]]
 
−
| [[16inch Mk.I Triple Gun Mount + AFCT Kai]]
 
−
| 68
 
−
| Yes
 
−
| Good gun for BB(V)
 
 
|-
 
|-
−
! 7
+
|{{Q|F116}} ||[[35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage)]]||Past +3
−
| [[46cm Triple Gun Mount Kai]]
 
−
| [[46cm Triple Gun Mount]]
 
−
| 69
 
−
| Yes
 
−
| Very niche, best gun for the ''Yamato''-class
 
 
|-
 
|-
−
! 10
+
|{{Q|F120}} ||[[12.7cm Twin Gun Mount Model D Kai 2]]||Past +8
−
| [[51cm Twin Gun Mount]]
 
−
| [[Prototype 51cm Twin Gun Mount]]
 
−
| 85
 
−
| Yes
 
−
| Very niche, has great FP
 
 
|-
 
|-
−
! 3
+
|{{Q|F121}} ||[[Type 22 Surface Radar Kai 4 (Calibrated Late Model)]]
−
| [[16inch Triple Gun Mount Mk.7 + GFCS]]
+
|-
−
| [[16inch Triple Gun Mount Mk.7]]
+
|{{Q|F121}} ||[[Type 13 Air Radar Kai (Late Model)]]||Past +4
−
| 100
 
−
| Yes
 
−
| Great gun for (F)BB(V) with high Acc
 
 
|-
 
|-
−
! 8
+
|{{Q|F123}} ||[[Type 3 Depth Charge Projector]]
−
| [[8cm High-angle Gun Kai + Additional Machine Guns]]
 
−
| [[8cm High-angle Gun]]
 
−
| 49
 
−
| Yes
 
−
| For [[RE]] usage only
 
 
|-
 
|-
−
! 5
+
|{{Q|F124}} ||[[Type 13 Air Radar]]
−
| [[Type C Kouhyouteki]]
 
−
| [[Type A Kouhyouteki]]
 
−
| 28
 
−
| No
 
−
| A better Minisub
 
 
|-
 
|-
−
! 5
+
|{{Q|F125}} ||[[38cm Quadruple Gun Mount Kai]]||x2
−
| [[Type 13 Air Radar Kai (Late Model)]]
 
−
| [[Type 13 Air Radar Kai]]
 
−
| 55
 
−
| Yes
 
−
| A dual-purpose radar, with good bonuses and usable in the [[RE]] of some IJN ships
 
 
|-
 
|-
−
! 6
+
|{{Q|F127}} ||[[Tenzan Model 12 (Murata Squadron)]]
−
| [[15m Duplex Rangefinder Kai + Type 21 Radar Kai 2 + Skilled Fire Direction Center]]
 
−
| [[15m Duplex Rangefinder + Type 21 Radar Kai 2]]
 
−
| 80
 
−
| Yes
 
−
| A dual-purpose radar, great for (F)BB(V), especially the ''Yamato''-class
 
 
|-
 
|-
−
! 10
+
|{{Q|Fq2}} ||[[Type 96 Land-based Attack Aircraft]]
−
| [[SK + SG Radar]]
 
−
| [[SK Radar]]
 
−
| 94
 
−
| Yes
 
−
| A dual-purpose radar, with only LoS as a great stat
 
 
|-
 
|-
−
! 9
+
|{{Q|Fq5}} ||[[Type 0 Fighter Model 52]]
−
| [[Type 32 Surface Radar Kai]]
+
|}
−
| [[Type 32 Surface Radar]]
+
 
−
| 58
+
==Collection Improvements==
−
| Yes
+
Some equipment are only obtainable via Akashi upgrades.
−
| Best large surface radar
+
*''The list can be found [[Equipment#Unbuildable Equipment|here]]
−
|-
+
*If completing the Kancodex is a personal goal, then crafting those equipment becomes a necessity in the long run.
−
! 6
+
*Making all those equipment should NOT be a priority over the rest, as most are not very useful or even useless.
−
| [[Type 4 Passive Sonar]]
+
*See below for when making those equipment overlap with advised improvements.
−
| [[Type 93 Passive Sonar]]
+
 
−
| 29
+
==Upgrade Advice==
 +
Here is a list of improvements that have as a main goal to "'''upgrade'''" said equipment into a better one.
 +
*Do note that certain upgrades can be done in chains, with part of the chain ranging from worse than the upgrade, equivalent to, or even better.
 +
*The "Total Srew Cost" is given as an indication, but does not reflect "real" with [[#Screw Guaranteeing/Saving|guaranteeing savings]] and consumed equipment being great factors to take into account.
 +
*Several good equipment are not listed there as they can be obtained otherwise more cheaply, or because the upgrade is just not worth it.
 +
 
 +
{|class="wikitable mw-collapsible mw-collapsed sortable" style="margin:auto"
 +
|+Upgrade Advice
 +
|-
 +
! Priority Level
 +
! Equipment Goal
 +
! Equipment To Upgrade
 +
! Total Srew Cost
 +
! Further Improvable?
 +
! Other Sources
 +
! Notes
 +
|-
 +
! 6
 +
| [[41cm Triple Gun Mount Kai]]
 +
| [[Prototype 41cm Triple Gun Mount]]
 +
| 69
 
| Yes
 
| Yes
−
| Good sonar at +12 ASW
+
| N/A
 +
| A good gun for BB(V), further upgradable.
 +
*The Prototype 41cm is also useful in the making
 
|-
 
|-
−
! 5
+
! 8
−
| [[Type144/147 ASDIC]]
+
| [[41cm Twin Gun Mount Kai 2]]
−
| [[Type124 ASDIC]]
+
| [[41cm Triple Gun Mount Kai]]
−
| 57
+
| 92
−
| No
 
−
| Good sonar at +13 ASW
 
−
|-
 
−
! 10
 
−
| [[Type 3 Shell Kai]]
 
−
| [[Type 3 Shell]]
 
−
| 60
 
 
| Yes
 
| Yes
−
| Only marginal stat boost
+
| {{Q|B130}}
−
|-
+
| A good gun for BB(V), especially IJN ones
−
! 7
+
*The 41cm Kai is also useful in the making
−
| [[Bi Type 40mm Twin Autocannon Mount]]
+
*Consumes 1 [[Prototype 46cm Twin Gun Mount]]
−
| [[QF 2-pounder Octuple Pom-pom Gun Mount]]
 
−
| 19
 
−
| Yes
 
−
| Great AA gun, very cheap
 
 
|-
 
|-
 
! 6
 
! 6
−
| [[Zuiun Model 12 (634 Air Group)]]
+
| [[41cm Triple Gun Mount Kai 2]]
−
| [[Zuiun Model 12]]
+
| [[41cm Triple Gun Mount Kai]]
−
| 69
+
| 93
 
| Yes
 
| Yes
−
| Good SPB, further upgradable and consumed to improve later variants
+
| {{Q|F74}}
 +
| A good gun for BB(V), especially IJN ones
 +
*The 41cm Kai is also useful in the making
 
|-
 
|-
−
! 4
+
! 2
−
| [[Zuiun (634 Air Group/Skilled)]]
+
| [[12cm 30 Tube Rocket Launcher Kai 2]]
−
| [[Zuiun Model 12 (634 Air Group)]]
+
| [[12cm 30-tube Rocket Launcher]]
−
| 56
+
| 40
 
| Yes
 
| Yes
−
| Great SPB, further upgradeable
+
| {{Q|B114}}
 +
| Needed to trigger the "[[AARB]]" that negate some plane damages
 +
*A goal is to 6, enough to equip a full "carrier fleet".
 
|-
 
|-
−
! 3
+
! 2
−
| [[Zuiun Kai 2 (634 Air Group)]]
+
| [[Type 2 Seaplane Fighter Kai]]
−
| [[Zuiun (634 Air Group/Skilled)]]
+
| [[Type 0 Reconnaissance Seaplane]]
−
| 86
+
| 40
 
| Yes
 
| Yes
−
| Great SPB, further upgradeable
+
| {{Q|B88}}
 +
| Good to maintain airpower without carriers
 +
*The goal is to have at least 6 good [[SPF]]
 
|-
 
|-
−
! 1
+
! 3
−
| [[Prototype Night Zuiun (Attack Equipment)]]
+
| [[Kyoufuu Kai]]
−
| [[Zuiun Kai 2 (634 Air Group)]]
+
| [[Type 2 Seaplane Fighter Kai]]
−
| 110
+
| 77
 
| Yes
 
| Yes
−
| Best SPB, with a special [[Night Cut-In]]  
+
| {{Q|B95}}, {{Q|B167}}
 +
| Great to maintain airpower without carriers
 +
*The T2 SPF Kai is also useful in the making
 +
*The goal is to have at least 6 good [[SPF]]
 +
|-
 +
! 2
 +
| [[Type 1 Armor Piercing Shell]]
 +
| [[Type 91 Armor Piercing Shell]]
 +
| 22
 +
| Yes
 +
| {{Q|B31}}, {{Q|B32}}
 +
| Good AP shell improving some [[Artillery Spotting]], cheap to make
 
|-
 
|-
 
! 10
 
! 10
−
| [[S-51J Kai]]
+
| [[Type 1 Armor Piercing Shell Kai]]
−
| [[S-51J]]
+
| [[Type 1 Armor Piercing Shell]]
−
| 96
+
| 35
 
| Yes
 
| Yes
−
| Best ASW, but extremely niche
+
| N/A
 +
| The best AP shell improving some [[Artillery Spotting]], but extremely expensive
 
|-
 
|-
−
! 6
+
! 1
−
| [[Type 4 20cm Anti-ground Rocket Launcher (Concentrated Deployment)]]
+
| [[Special Type 2 Amphibious Tank]]
−
| [[Shipborne Model Type 4 20cm Anti-ground Rocket Launcher]]
+
| [[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]]
−
| 53
+
| 39
−
| No
+
| Yes
−
| Good for [[Anti-Installation]] only
+
| {{Q|F33}}
 +
| Great against [[Installation]]s in all cases, and can serve for [[Resource Node|resource farming]]
 
|-
 
|-
−
! 4
+
! 1
−
| [[Ryuusei Kai (Skilled)]]
+
| [[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]]
−
| [[Ryuusei Kai]]
+
| [[Daihatsu Landing Craft]]
−
| 47
+
| 24
 
| Yes
 
| Yes
−
| Great torpedo bomber with [[AAR]]
+
| N/A
−
|}
+
| Great against [[Installation]]s in all cases
−
 
 
−
==Improvement Advice==
 
−
Here is a list of improvements that have as a main goal to "'''enhance'''" said equipment's [[stats]].
 
−
*In some cases, the equipment can be upgraded, but the upgrade is inferior to the improved base equipment,
 
−
*In some cases, the improved equipment only shows its best potential on certain ships, thanks to [[Visible Fit Bonuses]],
 
−
*Some of the listed equipment below are obtained from [[#Upgrade Advice|above listed upgrades]],
 
−
*Equipment being improved only for upgrade purposes are not listed there,
 
−
*The improvements related to [[#Quests Improvements|Quests]] are not listed there, and should be done with the quests in mind.
 
−
 
 
−
{|class="wikitable mw-collapsible mw-collapsed sortable" style="margin:auto"
 
−
|+Improvement Advice
 
−
! Priority Level
 
−
! Equipment
 
−
! Base Screw Cost
 
−
! Notes
 
 
|-
 
|-
−
| 1
+
! 4
−
| [[Combat Ration]]
+
| [[Toku Daihatsu Landing Craft]]
−
| 0
+
| [[Daihatsu Landing Craft]]
−
| Only used to farm screws with {{Q|Fd6}}
+
| 29
 +
| Yes
 +
| {{Q|B85}}
 +
| Good for [[Expeditions]], increasing the gains
 
|-
 
|-
−
| 1
+
! 5
−
| [[Shiden Kai 4]]
+
| [[Armed Daihatsu]]
−
| 4
+
| [[Daihatsu Landing Craft]]
−
| +12 airpower fighter
+
| 23
 +
| Yes
 +
| N/A
 +
| Great against [[Installation]]s and [[PT Imp]]s
 +
*Consumes a [[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]]
 
|-
 
|-
−
| 3
+
! 5
 
| [[F6F-5]]
 
| [[F6F-5]]
−
| 6
+
| [[F6F-3]]
−
| +12 airpower fighter
+
| 70
 +
| Yes
 +
| N/A
 +
| A +10 airpower fighter, great to reach air superiority
 
|-
 
|-
−
| 7
+
! 7
 +
| [[Type 0 Fighter Model 64 (Skilled Fighter-bomber)]]
 
| [[Type 0 Fighter Model 64 (Air Superiority Fighter Specification)]]
 
| [[Type 0 Fighter Model 64 (Air Superiority Fighter Specification)]]
−
| 5
+
| 70
−
| +11 airpower fighter
+
| Yes
 +
| N/A
 +
| Good all round fighter-bomber with [[AAR]]
 
|-
 
|-
−
| 5
+
! 5
−
| [[Type 0 Fighter Model 64 (Skilled Fighter-bomber)]]
+
| [[Shiden Kai 4]]
−
| 6
+
| [[Shiden Kai 2]]
−
| Good fighter-bomber with [[AAR]]
+
| 59
 +
| Yes
 +
| N/A
 +
| +10 airpower fighter, great to reach air superiority
 
|-
 
|-
−
| 10
+
! 8
−
| [[Type 0 Fighter Model 64 (Two-seat w/ KMX)]]
+
| [[Seafire Mk.III Kai]]
−
| 5
+
| [[Spitfire Mk.V]]
−
| Very niche fighter-bomber with ASW
+
| 49
 +
| No
 +
| N/A
 +
| Good fighter, with bonuses in some "European Events"
 
|-
 
|-
−
| 9
+
! 3
−
| [[Type 99 Dive Bomber Model 22 (Skilled)]]
+
| [[Spitfire Mk.V]]
−
| 3
+
| [[Spitfire Mk.I]]
−
| [[Anti-Installation]] dive-bomber
+
| 33
 +
| Yes
 +
| N/A
 +
| Great interceptor, further improbable, with bonuses in some "European Events"
 
|-
 
|-
−
| 10
+
! 6
−
| [[Swordfish Mk.II (Skilled)]]
+
| [[Re.2005 Kai]]
−
| 3
+
| [[Re.2001 CB Kai]]
−
| Torpedo bomber with bonuses in some "European Events"
+
| 60
 +
| No
 +
| N/A
 +
| +11 airpower fighter, with bonuses in some "European Events"
 
|-
 
|-
−
| 9
+
! 10
−
| [[TBF]]
+
| [[Re.2001 CB Kai]]
−
| 3
+
| [[Re.2001 OR Kai]]
−
| Torpedo bomber with bonuses in some "European Events"
+
| 49
 +
| Yes
 +
| N/A
 +
| Only used to make the [[Re.2005 Kai]]
 
|-
 
|-
−
| 10
+
! 10
−
| [[Type 2 Reconnaissance Aircraft]]
+
| [[Fulmar (Reconnaissance Fighter/Skilled)]]
−
| 3
+
| [[Fulmar]]
−
| Ultra niche role as a [[Range]] extender
+
| 39
 +
| No
 +
| N/A
 +
| Only useful in some "European Events"
 
|-
 
|-
−
| 3
+
! 9
−
| [[Ki-96]]
+
| [[Type 99 Dive Bomber Model 22 (Skilled)]]
−
| 4
+
| [[Type 99 Dive Bomber Model 22]]
−
| Great interceptor
+
| 36
 +
| Yes
 +
| N/A
 +
| A medium [[Anti-Installation]] dive-bomber
 
|-
 
|-
−
| 5
+
! 6
−
| [[Type 1 Fighter Hayabusa Model III A]]
+
| [[SB2C-3]]
−
| 4
+
| [[SBD-5]]
−
| Good interceptor
+
| 43
 +
| No
 +
| N/A
 +
| Good [[Anti-Installation]] dive-bomber, with bonuses in some "European Events"
 
|-
 
|-
−
| 2
+
! 8
−
| [[Spitfire Mk.V]]
+
| [[Prototype Type 97 Torpedo Bomber Kai (Skilled) No. 3 Model E (w/ Type 6 Airborne Radar Kai)]]
−
| 3
+
| [[Type 97 Torpedo Bomber (Skilled)]]
−
| Great interceptor, with bonuses in some "European Events"
+
| 45
 +
| No
 +
| N/A
 +
| A good night bomber
 
|-
 
|-
−
| 8
+
! 10
−
| [[Bomb-carrying Type 1 Fighter Hayabusa Model III Kai (65th Squadron)]]
+
| [[Tenzan Model 12A]]
−
| 4
+
| [[Tenzan]]
−
| Best LBB against DD only
+
| 34
 +
| Yes
 +
| {{Q|B169}}
 +
| Ok torpedo bomber, mostly used to improve the [[Type 1 Land-based Attack Aircraft Model 22A]]
 
|-
 
|-
−
| 4
+
! 9
−
| [[Type 1 Land-based Attack Aircraft Model 34]]
+
| [[Tenzan Model 12A Kai (w/ Type 6 Airborne Radar Kai)]]
−
| 5
+
| [[Prototype Type 97 Torpedo Bomber Kai No. 3 Model E (w/ Type 6 Airborne Radar Kai)]]
−
| Great LBB
+
| 63
 +
| No
 +
| {{Q|B154}}, {{Q|B169}}
 +
| Best craftable night bomber
 
|-
 
|-
−
| 9
+
! 5
−
| [[Type 1 Land-based Attack Aircraft (Hachiman Force)]]
+
| [[Jet Keiun Kai]]
−
| 3
+
| [[Prototype Keiun (Carrier-based Reconnaissance Model)]]
−
| Good LBB, cheap
+
| 86
 +
| No
 +
| N/A
 +
| A [[Jet]], coming with unique behaviors and great stats
 
|-
 
|-
−
| 5
+
! 8
−
| [[Type 1 Land-based Attack Aircraft (Nonaka Squadron)]]
+
| [[Type 2 Two-seat Fighter Toryuu Model C]]
−
| 5
+
| [[Type 2 Two-seat Fighter Toryuu]]
−
| Great LBB with [[AAR]]
+
| 33
 +
| Yes
 +
| N/A
 +
| OK interceptor, mostly a step towards the Ki-96
 
|-
 
|-
−
| 10
+
! 3
−
| [[12cm Single Gun Mount Kai 2]]
+
| [[Ki-96]]
−
| 2
+
| [[Type 2 Two-seat Fighter Toryuu Model C]]
−
| A good very niche small gun, cheap
+
| 38
 +
| Yes
 +
| N/A
 +
| Best craftable interceptor
 
|-
 
|-
−
| 8
+
! 8
−
| [[12.7cm Twin Gun Mount Model A Kai 2]]
+
| [[Ki-102 B]]
−
| 2
+
| [[Ki-96]]
−
| A good small gun, further upgradable, cheap
+
| 60
 +
| No
 +
| N/A
 +
| Good LBB stat-wise, but with low range
 
|-
 
|-
−
| 5
+
! 5
−
| [[Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4]]
+
| [[Type 1 Fighter Hayabusa Model III A]]
−
| 3
+
| [[Type 1 Fighter Hayabusa Model II]]
−
| A great very niche small gun
+
| 39
 +
| Yes
 +
| N/A
 +
| Good interceptor
 
|-
 
|-
−
| 4
+
! 6
−
| [[12.7cm Twin Gun Mount Model A Kai 3 (Wartime Modification) + Anti-Aircraft Fire Director]]
+
| [[Shiden Kai (343 Air Group) 301st Fighter Squadron]]
−
| 4
+
| [[Shiden Model 21 Shiden Kai]]
−
| A great niche small gun for [[AACI]]
+
| 71
 +
| No
 +
| N/A
 +
| Great interceptor
 
|-
 
|-
−
| 9
+
! 7
−
| [[12.7cm Single High-angle Gun Mount (Late Model)]]
+
| [[Do 217 E-5 + Hs293 Initial Model]]
−
| 2
+
| [[Do 17 Z-2]]
−
| Only one, very niche
+
| 63
 +
| No
 +
| N/A
 +
| A great LBB with [[AAR]] but with low range, with bonuses in some "European Events"
 
|-
 
|-
−
| 6
+
! 10
−
| [[12.7cm Twin Gun Mount Model C Kai 2]]
+
| [[Type 1 Land-based Attack Aircraft Model 34]]
−
| 2
+
| [[Type 1 Land-based Attack Aircraft Model 22A]]
−
| A good small gun, with great bonuses on some IJN ships
+
| 56
 +
| Yes
 +
| {{Q|B154}}
 +
| Best craftable LBB, but is the most expensive equipment in the game:
 +
*Consumes 8 [[Tenzan Model 12A]]
 
|-
 
|-
−
| 3
+
! 7
−
| [[12.7cm Twin Gun Mount Model C Kai 3]]
+
| [[Type 4 Heavy Bomber Hiryuu (Skilled)]]
−
| 5
+
| [[Type 4 Heavy Bomber Hiryuu]]
−
| A good small gun, with great bonuses on some IJN ships
+
| 72
 +
| No
 +
| N/A
 +
| A great LBB with [[AAR]] but with low range
 
|-
 
|-
−
| 1
+
! 10
−
| [[12.7cm Twin Gun Mount Model D Kai 2]]
+
| [[12cm Single Gun Mount Kai 2]]
−
| 5
+
| [[12cm Single Gun Mount]]
−
| Best DD gun, with special bonuses for [[Night Cut-In]]s
+
| 19
 +
| Yes
 +
| N/A
 +
| A good very niche small gun
 
|-
 
|-
−
| 9
+
! 9
−
| [[130mm B-13 Twin Gun Mount]]
+
| [[Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4]]
−
| 5
+
| [[12.7cm Twin Gun Mount Model A Kai 2]]
−
| A good very niche small gun
+
| 38
 +
| Yes
 +
| {{Q|B179}}
 +
| A good very niche small gun, with great bonuses on some IJN ships
 
|-
 
|-
−
| 6
+
! 3
 +
| [[5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37]]
 
| [[5inch Single Gun Mount Mk.30 Kai]]
 
| [[5inch Single Gun Mount Mk.30 Kai]]
−
| 7
+
| 101
−
| A good small gun for [[AACI]], further upgradeable
+
| No
 +
| N/A
 +
| Best [[AACI]] small gun, with high AA, and required in some [[AACI]]
 
|-
 
|-
−
| 3
+
! 9
−
| [[12.7cm Twin Gun Mount Model B Kai 4 (Wartime Modification) + Anti-Aircraft Fire Director]]
+
| [[12.7cm Twin Gun Mount Model C Kai 3]]
−
| 6
+
| [[12.7cm Twin Gun Mount Model C Kai 2]]
−
| A great niche small gun for [[AACI]]
+
| 34
 +
| Yes
 +
| {{Q|B184}}, {{Q|B192}}
 +
| A good small gun, with great bonuses on some IJN ships
 
|-
 
|-
−
| 1
+
! 5
−
| [[10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director]]
 
−
| 3
 
−
| 2nd best [[AACI]] small gun
 
−
|-
 
−
| 4
 
 
| [[14cm Twin Gun Mount Kai]]
 
| [[14cm Twin Gun Mount Kai]]
−
| 3
+
| [[14cm Twin Gun Mount]]
−
| Great medium gun on some IJN ships
+
| 17
 +
| Yes
 +
| {{Q|B140}}, {{Q|F118}}
 +
| Great medium gun on some IJN ships with fit bonuses
 +
*Rarely more than 4 are needed
 
|-
 
|-
−
| 6
+
! 3
−
| [[Bofors 15.2cm Twin Gun Mount Model 1930]]
+
| [[15.2cm Twin Gun Mount Kai 2]]
−
| 3
+
| [[15.2cm Twin Gun Mount Kai]]
−
| Good CL gun
+
| 44
 +
| Yes
 +
| {{Q|B164}}, {{Q|B168}}, {{Q|C57}}
 +
| Best CL gun, with good FP and great Acc
 
|-
 
|-
−
| 5
+
! 3
 
| [[15.2cm Twin Gun Mount Kai]]
 
| [[15.2cm Twin Gun Mount Kai]]
−
| 2
+
| [[15.2cm Twin Gun Mount]]
−
| Great CL gun
+
| 36
−
|-
+
| Yes
−
| 1
+
| {{Ship/Link|Noshiro Kai Ni}}, {{Q|F119}}
−
| [[15.2cm Twin Gun Mount Kai 2]]
+
| Best CL gun in the game, with good FP and great Acc
−
| 3
 
−
| Best CL gun
 
 
|-
 
|-
−
| 8
+
! 9
 
| [[15.5cm Triple Gun Mount Kai]]
 
| [[15.5cm Triple Gun Mount Kai]]
−
| 4
+
| [[15.5cm Triple Gun Mount]]
−
| Good CL gun
+
| 34
 +
| Yes
 +
| N/A
 +
| Good CL gun with higher FP
 
|-
 
|-
−
| 2
+
! 8
−
| [[20.3cm (No.2) Twin Gun Mount]]
+
| [[15.5cm Triple Secondary Gun Mount Kai]]
−
| 2
+
| [[15.5cm Triple Secondary Gun Mount]]
−
| Great CA gun
+
| 34
 +
| Yes
 +
| N/A
 +
| Good surface secondary gun, especially for CLT or in cases of air parity or worse
 
|-
 
|-
−
| 1
+
! 5
−
| [[20.3cm (No.3) Twin Gun Mount]]
+
| [[15.5cm Triple Secondary Gun Mount Kai 2]]
−
| 2
+
| [[15.5cm Triple Secondary Gun Mount Kai]]
−
| Best CA(V) gun
+
| 53
 +
| No
 +
| {{Q|B181}}, {{Q|B182}} x2
 +
| Best surface secondary gun, especially for CLT or in cases of air parity or worse
 
|-
 
|-
−
| 6
+
! 10
 +
| [[8inch Triple Gun Mount Mk.9 mod.2]]
 
| [[8inch Triple Gun Mount Mk.9]]
 
| [[8inch Triple Gun Mount Mk.9]]
−
| 2
+
| 42
−
| 2nd best cruiser gun for FP
+
| Yes
 +
| N/A
 +
| Best cruiser gun for FP, useful on CA in Main [[Combined Fleet]]s
 
|-
 
|-
−
| 4
+
! 7
−
| [[8inch Triple Gun Mount Mk.9 mod.2]]
+
| [[35.6cm Triple Gun Mount Kai (Dazzle Camouflage)]]
−
| 3
+
| [[35.6cm Twin Gun Mount (Dazzle Camouflage)]]
−
| Best cruiser gun for FP
+
| 43
 +
| Yes
 +
| N/A
 +
| Great gun for FBB, with good stats, especially Acc
 
|-
 
|-
−
| 7
+
! 6
−
| [[16inch Triple Gun Mount Mk.6 mod.2]]
+
| [[35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage)]]
−
| 4
+
| [[35.6cm Triple Gun Mount Kai (Dazzle Camouflage)]]
−
| Good gun for BB(V)
+
| 70
 +
| Yes
 +
| {{Q|B190}}, {{Q|C74}}
 +
| Great gun for FBB, with good stats, especially Acc
 
|-
 
|-
−
| 4
+
! 9
−
| [[16inch Triple Gun Mount Mk.7 + GFCS]]
+
| [[16inch Mk.VIII Twin Gun Mount Kai]]
−
| 8
+
| [[16inch Mk.V Twin Gun Mount]]
−
| Great gun for (F)BB(V) with high Acc
+
| 56
 +
| Yes
 +
| N/A
 +
| Good gun for BB(V) with medium stats
 
|-
 
|-
−
| 9
+
! 10
−
| [[16inch Mk.VIII Twin Gun Mount Kai]]
+
| [[38.1cm Mk.I/N Twin Gun Mount Kai]]
−
| 5
+
| [[38.1cm Mk.I Twin Gun Mount]]
−
| Good gun for BB(V)
+
| 48
 +
| Yes
 +
| N/A
 +
| Good gun for FBB with medium stats
 
|-
 
|-
−
| 8
+
! 9
 
| [[16inch Mk.I Triple Gun Mount Kai + FCR Type 284]]
 
| [[16inch Mk.I Triple Gun Mount Kai + FCR Type 284]]
−
| 5
+
| [[16inch Mk.I Triple Gun Mount + AFCT Kai]]
−
| Good gun for BB(V)
+
| 68
 +
| Yes
 +
| N/A
 +
| Good gun for BB(V) with high Acc, and used is an [[AACI]]
 
|-
 
|-
−
| 10
+
! 7
−
| [[30.5cm Triple Gun Mount Kai]]
+
| [[46cm Triple Gun Mount Kai]]
−
| 4
+
| [[46cm Triple Gun Mount]]
−
| Good gun for Gangut
+
| 69
 +
| Yes
 +
| {{Q|B182}}
 +
| Very niche, with long range, good FP and Acc, best gun for the ''Yamato''-class
 
|-
 
|-
−
| 9
+
! 10
−
| [[38.1cm Mk.I/N Twin Gun Mount Kai]]
+
| [[51cm Twin Gun Mount]]
−
| 3
+
| [[Prototype 51cm Twin Gun Mount]]
−
| Good gun for FBB
+
| 85
 +
| Yes
 +
| N/A
 +
| Very niche, mostly used for its great FP
 
|-
 
|-
−
| 10
+
! 5
−
| [[38cm Twin Gun Mount Kai]]
+
| [[16inch Triple Gun Mount Mk.7 + GFCS]]
−
| 3
+
| [[16inch Triple Gun Mount Mk.7]]
−
| OK gun for FBB
+
| 100
 +
| Yes
 +
| N/A
 +
| Great gun for (F)BB(V) with high Acc
 
|-
 
|-
−
| 4
+
! 7
−
| [[35.6cm Triple Gun Mount Kai (Dazzle Camouflage)]]
+
| [[8cm High-angle Gun Kai + Additional Machine Guns]]
−
| 4
+
| [[8cm High-angle Gun]]
−
| Great gun for FBB
+
| 49
 +
| Yes
 +
| {{Q|B96}}, {{Q|B167}}, {{Q|B169}}
 +
| Used for [[RE]] usage only, to maintain [[Artillery Spotting]] on some ships
 
|-
 
|-
−
| 4
+
! 9
−
| [[35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage)]]
+
| [[Type C Kouhyouteki]]
−
| 6
+
| [[Type A Kouhyouteki]]
−
| Great gun for FBB
+
| 28
 +
| No
 +
| {{Q|B167}}
 +
| A better Minisub at +14 torpedo stat
 
|-
 
|-
−
| 2
+
! 5
−
| [[38cm Quadruple Gun Mount Kai]]
+
| [[Type 13 Air Radar Kai (Late Model)]]
−
| 7
+
| [[Type 13 Air Radar Kai]]
−
| Great gun for all (F)BB(V)
+
| 55
 +
| Yes
 +
| N/A
 +
| A dual-purpose radar, with good bonuses and usable in the [[RE]] of some IJN ships
 
|-
 
|-
−
| 3
+
! 6
−
| [[41cm Triple Gun Mount Kai 2]]
+
| [[15m Duplex Rangefinder Kai + Type 21 Radar Kai 2 + Skilled Fire Direction Center]]
−
| 7
+
| [[15m Duplex Rangefinder + Type 21 Radar Kai 2]]
−
| Great gun for IJN BB(V)
+
| 80
 +
| Yes
 +
| N/A
 +
| A dual-purpose radar providing LoS, Acc, and AA, great for all (F)BB(V), especially the ''Yamato''-class
 +
*The base Duplex is also useful in the making
 
|-
 
|-
−
| 3
+
! 10
−
| [[41cm Triple Gun Mount Kai 2]]
+
| [[SK + SG Radar]]
−
| 7
+
| [[SK Radar]]
−
| Great gun for IJN BB(V)
+
| 94
 +
| Yes
 +
| N/A
 +
| A dual-purpose radar, with only LoS as a good stat
 
|-
 
|-
−
| 5
+
! 9
−
| [[46cm Triple Gun Mount Kai]]
+
| [[Type 32 Surface Radar Kai]]
−
| 7
+
| [[Type 32 Surface Radar]]
−
| Very niche, best gun for the ''Yamato''-class
+
| 58
 +
| Yes
 +
| N/A
 +
| Best large surface radar, providing LoS and Acc
 
|-
 
|-
−
| 8
+
! 6
−
| [[51cm Twin Gun Mount]]
+
| [[Type 4 Passive Sonar]]
−
| 7
+
| [[Type 93 Passive Sonar]]
−
| Very niche, has great FP
+
| 29
 +
| Yes
 +
| {{Q|B74}}
 +
| Good sonar at +12 ASW, helping to reach some [[OASW]]
 
|-
 
|-
−
| 4
+
! 5
−
| [[8cm High-angle Gun Kai + Additional Machine Guns]]
+
| [[Type144/147 ASDIC]]
−
| 4
+
| [[Type124 ASDIC]]
−
| For [[RE]] usage only
+
| 57
 +
| No
 +
| {{Ship/Link|Janus Kai}}
 +
| Good sonar at +13 ASW, helping to reach some [[OASW]]
 
|-
 
|-
−
| 8
+
! 10
−
| [[90mm Single High-angle Gun Mount]]
+
| [[Type 3 Shell Kai]]
−
| 1
+
| [[Type 3 Shell]]
−
| Good for [[AACI]], very cheap
+
| 60
 +
| Yes
 +
| N/A
 +
| Only gives marginal stat boost and fit bonuses
 
|-
 
|-
−
| 9
+
! 7
−
| [[10cm Twin High-angle Gun Mount Kai + Additional Machine Guns]]
+
| [[QF 2-pounder Octuple Pom-pom Gun Mount]]
−
| 4
+
| [[Bi Type 40mm Twin Autocannon Mount]]
−
| For [[RE]] usage only
+
| 19
 +
| Yes
 +
| {{Ship/Link|Ark Royal Kai}}, {{Ship/Link|Warspite Kai}}
 +
| Great AA gun useful in [[AACI]], very cheap
 
|-
 
|-
−
| 5
+
! 6
−
| [[10cm Twin High-angle Gun Mount Battery Concentrated Deployment]]
+
| [[Zuiun Model 12 (634 Air Group)]]
−
| 5
+
| [[Zuiun Model 12]]
−
| Best secondary gun for [[AACI]]
+
| 69
 +
| Yes
 +
| N/A
 +
| Good SPB with [[AAR]], providing LoS, bombing, and other stats, further upgradeable and consumed to improve later variants
 
|-
 
|-
−
| 8
+
! 4
−
| [[15.2cm Triple Gun Mount]]
+
| [[Zuiun (634 Air Group/Skilled)]]
−
| 6
+
| [[Zuiun Model 12 (634 Air Group)]]
−
| OK secondary
+
| 56
 +
| Yes
 +
| {{Q|F58}}
 +
| Great SPB with [[AAR]], providing LoS, bombing, and other stats, further upgradeable
 
|-
 
|-
−
| 5
+
! 3
−
| [[15.5cm Triple Secondary Gun Mount Kai]]
+
| [[Zuiun Kai 2 (634 Air Group)]]
−
| 4
+
| [[Zuiun (634 Air Group/Skilled)]]
−
| Good secondary
+
| 86
 +
| Yes
 +
| {{Q|B132}}
 +
| Great SPB with [[AAR]], providing LoS, bombing, and other stats, further upgradeable
 
|-
 
|-
−
| 2
+
! 1
−
| [[OTO 152mm Triple Rapid Fire Gun Mount]]
+
| [[Prototype Night Zuiun (Attack Equipment)]]
−
| 2
+
| [[Zuiun Kai 2 (634 Air Group)]]
−
| 2nd best secondary
+
| 110
 +
| Yes
 +
| N/A
 +
| Best SPB, with a special [[Night Cut-In]]
 
|-
 
|-
−
| 7
+
! 10
−
| [[53cm Twin Torpedo Mount]]
+
| [[S-51J Kai]]
−
| 1
+
| [[S-51J]]
−
| Only one, very niche, cheap
+
| 96
 +
| Yes
 +
| N/A
 +
| Best ASW aircraft, but extremely niche, serving for some [[OASW]]
 
|-
 
|-
−
| 5
+
! 6
−
| [[533mm Quintuple Torpedo Mount (Initial Model)]]
+
| [[Type 4 20cm Anti-ground Rocket Launcher (Concentrated Deployment)]]
−
| 3
+
| [[Shipborne Model Type 4 20cm Anti-ground Rocket Launcher]]
−
| Only good for USN ships
+
| 53
 +
| No
 +
| N/A
 +
| Good for [[Anti-Installation]] only, giving some side bonuses, and equipable on more ships than "landing equipment"
 
|-
 
|-
−
| 4
+
! 4
−
| [[61cm Triple (Oxygen) Torpedo Mount Late Model]]
+
| [[Ryuusei Kai (Skilled)]]
−
| 3
+
| [[Ryuusei Kai]]
−
| Best torpedo for some ships
+
| 47
−
|-
+
| Yes
−
| 3
+
| N/A
−
| [[61cm Quadruple (Oxygen) Torpedo Mount]]
+
| Great torpedo bomber with [[AAR]]
−
| 1
+
|}
−
| Only one, very cheap
+
 
 +
==Improvement Advice==
 +
Here is a list of improvements that have as a main goal to "'''enhance'''" said equipment's [[stats]].
 +
*In some cases, the equipment can be upgraded, but the upgrade is inferior to the improved base equipment,
 +
*In some cases, the improved equipment only shows its best potential on certain ships, thanks to [[Visible Fit Bonuses]],
 +
*Some of the listed equipment below are obtained from [[#Upgrade Advice|above listed upgrades]],
 +
*Equipment being improved only for upgrade purposes are not listed there,
 +
*The improvements related to [[#Quests Improvements|Quests]] are not listed there, and should be done with the quests in mind.
 +
 
 +
{|class="wikitable mw-collapsible mw-collapsed sortable" style="margin:auto"
 +
|+Improvement Advice
 +
! Priority Level
 +
! Equipment
 +
! Base Screw Cost
 +
! Notes
 
|-
 
|-
−
| 1
+
! 1
−
| [[61cm Quadruple (Oxygen) Torpedo Mount Late Model]]
+
| [[Combat Ration]]
−
| 3
+
| 0
−
| Best torpedo
+
| Only used to farm screws with {{Q|Fd6}}
 +
|-
 +
! 1
 +
| [[Shiden Kai 4]]
 +
| 4
 +
| +12 airpower fighter, great to reach air superiority
 
|-
 
|-
−
| 2
+
! 3
−
| [[61cm Quintuple (Oxygen) Torpedo Mount]]
+
| [[F6F-5]]
−
| 3
+
| 6
−
| Great torpedo for most ships
+
| +12 airpower fighter, great to reach air superiority
 
|-
 
|-
−
| 2
+
! 7
−
| [[61cm Quintuple (Oxygen) Torpedo Mount]]
+
| [[Type 0 Fighter Model 64 (Air Superiority Fighter Specification)]]
 
| 5
 
| 5
−
| Great torpedo for most ships
+
| +11 airpower fighter, great to reach air superiority
 
|-
 
|-
−
| 7
+
! 5
−
| [[Type 13 Air Radar Kai (Late Model)]]
+
| [[Type 0 Fighter Model 64 (Skilled Fighter-bomber)]]
−
| 3
+
| 6
−
| A dual-purpose radar, with good bonuses and usable in the [[RE]] of some IJN ships
+
| Good all round fighter-bomber with [[AAR]]
 
|-
 
|-
−
| 8
+
! 10
−
| [[SG Radar (Initial Model)]]
+
| [[Type 0 Fighter Model 64 (Two-seat w/ KMX)]]
−
| 6
 
−
|-
 
−
| 8
 
−
| [[Type 21 Air Radar Kai 2]]
 
 
| 5
 
| 5
 +
| Very niche fighter-bomber with ASW
 
|-
 
|-
−
| 10
+
! 9
−
| [[SK + SG Radar]]
+
| [[Type 99 Dive Bomber Model 22 (Skilled)]]
−
| 6
 
−
|-
 
−
| 6
 
−
| [[Type 32 Surface Radar Kai]]
 
−
| 5
 
−
|-
 
−
| 5
 
−
| [[Type 3 Active Sonar]]
 
−
| 2
 
−
|-
 
 
| 3
 
| 3
−
| [[Type 3 Active Sonar Kai]]
+
| Medium [[Anti-Installation]] dive-bomber
−
| 4
 
 
|-
 
|-
 +
! 10
 +
| [[Swordfish Mk.II (Skilled)]]
 
| 3
 
| 3
−
| [[Type 4 Passive Sonar]]
+
| Torpedo bomber with bonuses in some "European Events"
−
| 3
 
 
|-
 
|-
−
| 10
+
! 9
−
| [[Type 0 Passive Sonar]]
+
| [[TBF]]
 
| 3
 
| 3
−
| Unusable on most ASW ships
+
| Torpedo bomber with bonuses in some "European Events"
 
|-
 
|-
 +
! 10
 +
| [[Type 2 Reconnaissance Aircraft]]
 
| 3
 
| 3
−
| [[Type 2 Depth Charge]]
+
| Ultra niche role as a [[Range]] extender
−
| 2
 
 
|-
 
|-
−
| 3
+
! 3
−
| [[Type 3 Depth Charge Projector]]
+
| [[Ki-96]]
−
| 2
+
| 4
 +
| Great interceptor in all cases
 
|-
 
|-
 +
! 5
 +
| [[Type 1 Fighter Hayabusa Model III A]]
 
| 4
 
| 4
−
| [[Type 3 Depth Charge Projector (Concentrated Deployment)]]
+
| Good interceptor and a decent LB fighter
−
| 3
 
 
|-
 
|-
 +
! 2
 +
| [[Spitfire Mk.V]]
 
| 3
 
| 3
−
| [[Type 2 Depth Charge Kai 2]]
+
| Great interceptor and a decent LB fighter, with bonuses in some "European Events"
−
| 3
 
 
|-
 
|-
−
| 2
+
! 10
−
| [[Type 91 Armor Piercing Shell]]
+
| [[Bomb-carrying Type 1 Fighter Hayabusa Model III Kai (65th Squadron)]]
−
| 1
+
| 4
 +
| Best LBB, but against DD only
 
|-
 
|-
−
| 1
+
! 4
−
| [[Type 1 Armor Piercing Shell]]
+
| [[Type 1 Land-based Attack Aircraft Model 34]]
−
| 1
+
| 5
 +
| Great LBB, with high stats and good range
 
|-
 
|-
−
| 10
+
! 9
−
| [[Type 1 Armor Piercing Shell Kai]]
+
| [[Type 1 Land-based Attack Aircraft (Hachiman Force)]]
−
| 7
+
| 3
 +
| Good LBB, with good stats and good range, cheap
 
|-
 
|-
−
| 1
+
! 5
−
| [[Type 3 Shell]]
+
| [[Type 1 Land-based Attack Aircraft (Nonaka Squadron)]]
−
| 4
+
| 5
 +
| Great LBB with [[AAR]], high stats and good range
 
|-
 
|-
 +
! 10
 +
| [[12cm Single Gun Mount Kai 2]]
 
| 2
 
| 2
−
| [[Type 3 Shell Kai]]
+
| A good very niche small gun, cheap
−
| 6
 
 
|-
 
|-
−
| 4
+
! 8
−
| [[Type 3 Shell Kai 2]]
+
| [[12.7cm Twin Gun Mount Model A Kai 2]]
−
| 6
+
| 2
 +
| A good small gun with great bonuses on some IJN ships, further upgradable, cheap
 
|-
 
|-
−
| 4
+
! 5
−
| [[2cm Flakvierling 38]]
+
| [[Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4]]
 
| 3
 
| 3
−
| Has great fit bonuses
+
| A good very niche small gun, with great bonuses on some IJN ships
 
|-
 
|-
−
| 1
+
! 4
−
| [[12cm 30-tube Rocket Launcher Kai 2]]
+
| [[12.7cm Twin Gun Mount Model A Kai 3 (Wartime Modification) + Anti-Aircraft Fire Director]]
 
| 4
 
| 4
−
| Most useful AA gun
+
| A great niche small gun for [[AACI]], with great bonuses on some IJN ships
 
|-
 
|-
−
| 5
+
! 9
−
| [[25mm Triple Autocannon Mount (Concentrated Deployment)]]
+
| [[12.7cm Single High-angle Gun Mount (Late Model)]]
−
| 3
+
| 2
 +
| Only one, very niche use as an Acc boost on [[Yura]]
 
|-
 
|-
 +
! 6
 +
| [[12.7cm Twin Gun Mount Model C Kai 2]]
 
| 2
 
| 2
−
| [[25mm Triple Autocannon Mount (Concentrated Deployment)]]
+
| A good small gun, with great bonuses on some IJN ships
−
| 2
 
 
|-
 
|-
−
| 10
+
! 3
−
| [[New Model High Temperature High Pressure Boiler]]
+
| [[12.7cm Twin Gun Mount Model C Kai 3]]
−
| 8
+
| 5
 +
| A good small gun, with great bonuses on some IJN ships
 +
|-
 +
! 1
 +
| [[12.7cm Twin Gun Mount Model D Kai 2]]
 +
| 5
 +
| Best DD gun, with special bonuses for [[Night Cut-In]]s
 
|-
 
|-
 +
! 9
 +
| [[130mm B-13 Twin Gun Mount]]
 
| 5
 
| 5
−
| [[New Kanhon Design Anti-torpedo Bulge (Medium)]]
+
| A good niche small gun with FP
−
| 6
 
 
|-
 
|-
−
| 10
+
! 6
−
| [[Pugliese Underwater Protection Bulkhead]]
+
| [[5inch Single Gun Mount Mk.30 Kai]]
−
| 4
+
| 7
 +
| A good small gun for [[AACI]], required in some, further upgradeable
 
|-
 
|-
−
| 5
+
! 3
−
| [[New Kanhon Design Anti-torpedo Bulge (Large)]]
+
| [[12.7cm Twin Gun Mount Model B Kai 4 (Wartime Modification) + Anti-Aircraft Fire Director]]
 
| 6
 
| 6
 +
| A great small gun for [[AACI]], with great bonuses on some IJN ships
 
|-
 
|-
−
| 2
+
! 1
−
| [[Searchlight]]
+
| [[10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director]]
−
| 2
+
| 3
−
| Only one
+
| 2nd best [[AACI]] small gun, great on all DD as a default gun choice
 +
* No more than 10 are needed
 
|-
 
|-
−
| 10
+
! 4
−
| [[Type 96 150cm Searchlight]]
+
| [[14cm Twin Gun Mount Kai]]
 
| 3
 
| 3
−
| Only one
+
| Great medium gun on some IJN ships with fit bonuses
 +
*Rarely more than 4 are needed
 
|-
 
|-
−
| 10
+
! 6
−
| [[Swordfish Mk.II Kai (Reconnaissance Seaplane Model)]]
+
| [[Bofors 15.2cm Twin Gun Mount Model 1930]]
 
| 3
 
| 3
 +
| Good CL gun, with good FP and great Acc
 
|-
 
|-
−
| 3
+
! 5
−
| [[Type 0 Observation Seaplane]]
+
| [[15.2cm Twin Gun Mount Kai]]
 
| 2
 
| 2
 +
| Great CL gun, with good FP and great Acc
 
|-
 
|-
 +
! 1
 +
| [[15.2cm Twin Gun Mount Kai 2]]
 
| 3
 
| 3
−
| [[Type 0 Reconnaissance Seaplane Model 11B]]
+
| The Best CL gun, with good FP and great Acc
−
| 4
 
 
|-
 
|-
−
| 9
+
! 8
−
| [[Fairey Seafox Kai]]
+
| [[15.5cm Triple Gun Mount Kai]]
−
| 4
 
−
|-
 
−
| 3
 
−
| [[Shiun]]
 
−
| 4
 
−
|-
 
−
| 5
 
−
| [[Ro.44 Seaplane Fighter bis]]
 
 
| 4
 
| 4
 +
| Good CL gun with higher FP
 
|-
 
|-
 +
! 2
 +
| [[20.3cm (No.2) Twin Gun Mount]]
 
| 2
 
| 2
−
| [[Type 2 Seaplane Fighter Kai (Skilled)]]
+
| Great CA gun with high FP and Acc
−
| 7
 
 
|-
 
|-
 +
! 1
 +
| [[20.3cm (No.3) Twin Gun Mount]]
 
| 2
 
| 2
−
| [[Kyoufuu Kai]]
+
| Great CA gun with high FP and Acc
−
| 4
 
 
|-
 
|-
 +
! 6
 +
| [[8inch Triple Gun Mount Mk.9]]
 
| 2
 
| 2
−
| [[Kyoufuu Kai 2]]
+
| 2nd best cruiser gun for FP, useful on CA in Main [[Combined Fleets]]
−
| 7
 
 
|-
 
|-
−
| 10
+
! 4
−
| [[Laté 298B]]
+
| [[8inch Triple Gun Mount Mk.9 mod.2]]
 
| 3
 
| 3
 +
| Best cruiser gun for FP, useful on CA in Main [[Combined Fleets]]
 
|-
 
|-
−
| 5
+
! 7
−
| [[Zuiun (634 Air Group/Skilled)]]
+
| [[16inch Triple Gun Mount Mk.6 mod.2]]
−
| 6
+
| 4
−
| 4th best SBP
+
| Good gun for BB(V) with medium stats
 
|-
 
|-
−
| 3
+
! 4
−
| [[Zuiun Kai 2 (634 Air Group)]]
+
| [[16inch Triple Gun Mount Mk.7 + GFCS]]
 
| 8
 
| 8
−
| 2nd best SBP
+
| Great gun for (F)BB(V) with high Acc
 +
|-
 +
! 9
 +
| [[16inch Mk.VIII Twin Gun Mount Kai]]
 +
| 5
 +
| Good gun for BB(V) with medium stats
 +
|-
 +
! 8
 +
| [[16inch Mk.I Triple Gun Mount Kai + FCR Type 284]]
 +
| 5
 +
| Good gun for BB(V) with high Acc, and used is an [[AACI]]
 
|-
 
|-
−
| 10
+
! 10
−
| [[S-51J Kai]]
+
| [[30.5cm Triple Gun Mount Kai]]
−
| 8
+
| 4
−
| Ultra niche
+
| Good gun for Gangut only
 
|-
 
|-
−
| 11
+
! 9
−
| [[Type 3 Command Liaison Aircraft Kai]]
+
| [[38.1cm Mk.I/N Twin Gun Mount Kai]]
 
| 3
 
| 3
−
| Useless
+
| Good gun for BB(V) with high Acc, and used is an AACI
 
|-
 
|-
−
| 1
+
! 10
−
| [[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]]
+
| [[38cm Twin Gun Mount Kai]]
−
| 2
+
| 3
−
| Best against [[Installation]]s
+
| Medium gun for FBB with medium stats
−
|-
+
|-
−
| 1
+
! 4
−
| [[Special Type 2 Amphibious Tank]]
+
| [[35.6cm Triple Gun Mount Kai (Dazzle Camouflage)]]
−
| 2
+
| 4
−
| Best against [[Installation]]s
+
| Great gun for FBB, with good stats, especially Acc
 
|-
 
|-
 +
! 4
 +
| [[35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage)]]
 
| 6
 
| 6
−
| [[Toku Daihatsu Landing Craft]]
+
| Great gun for FBB, with good stats, especially Acc
 +
|-
 +
! 2
 +
| [[38cm Quadruple Gun Mount Kai]]
 +
| 7
 +
| Great gun for all (F)BB(V), especially FBB, with great stats, especially Acc
 +
|-
 +
! 4
 +
| [[41cm Triple Gun Mount Kai 2]]
 +
| 7
 +
| A great gun for BB(V), especially IJN ones
 +
|-
 +
! 4
 +
| [[41cm Triple Gun Mount Kai 2]]
 +
| 7
 +
| A great gun for BB(V), especially IJN ones
 +
|-
 +
! 5
 +
| [[46cm Triple Gun Mount Kai]]
 +
| 7
 +
| Very niche, with long range, good FP and Acc, best gun for the ''Yamato''-class
 +
|-
 +
! 8
 +
| [[51cm Twin Gun Mount]]
 +
| 7
 +
| Very niche, mostly used for its great FP
 +
|-
 +
! 4
 +
| [[8cm High-angle Gun Kai + Additional Machine Guns]]
 +
| 4
 +
| Used for [[RE]] usage only, to maintain [[Artillery Spotting]] on some ships
 +
|-
 +
! 8
 +
| [[90mm Single High-angle Gun Mount]]
 +
| 1
 +
| Good for [[AACI]], very cheap
 +
|-
 +
! 9
 +
| [[10cm Twin High-angle Gun Mount Kai + Additional Machine Guns]]
 +
| 4
 +
| Used for [[RE]] usage only, to maintain [[Artillery Spotting]] on some ships
 +
|-
 +
! 5
 +
| [[10cm Twin High-angle Gun Mount Battery Concentrated Deployment]]
 +
| 5
 +
| Best secondary gun for [[AACI]]
 +
|-
 +
! 8
 +
| [[15.2cm Triple Gun Mount]]
 +
| 6
 +
| OK secondary with bonuses on French ships
 +
|-
 +
! 5
 +
| [[15.5cm Triple Secondary Gun Mount Kai]]
 +
| 4
 +
| Good surface secondary gun, especially for CLT or in cases of air parity or worse
 +
|-
 +
! 2
 +
| [[OTO 152mm Triple Rapid Fire Gun Mount]]
 
| 2
 
| 2
−
| Good for [[Expeditions]]
+
| 2nd best surface secondary gun, especially for CLT or in cases of air parity or worse
−
|-
+
|-
−
| 3
+
! 7
−
| [[Soukoutei (Armored Boat Class)]]
+
| [[53cm Twin Torpedo Mount]]
−
| 2
+
| 1
−
| Geat against [[Installation]]s and [[PT Imp]]s
+
| Only one, very niche, cheap
−
|-
+
|-
−
| 3
+
! 5
−
| [[Armed Daihatsu]]
+
| [[533mm Quintuple Torpedo Mount (Initial Model)]]
−
| 3
+
| 3
−
| Geat against [[Installation]]s and [[PT Imp]]s
+
| Only good for USN ships
−
|-
+
|-
−
| 5
+
! 4
−
| [[Skilled Deck Personnel + Aviation Maintenance Hands]]
+
| [[61cm Triple (Oxygen) Torpedo Mount Late Model]]
−
| 2
+
| 3
−
| For CV(B/L) [[RE]] usage only
+
| Best torpedo for some IJN ships
−
|}
+
|-
−
 
+
! 3
−
==Improvement Traps==
+
| [[61cm Quadruple (Oxygen) Torpedo Mount]]
−
Here is a list of equipment that '''should NOT''' be upgraded, as they are needed to upgrade better equipment, and thus upgrading them renders them less valuable.
+
| 1
−
*Additionaly, so far, [[Submarine Equipment]] do not gain any stat from improvement.
+
| Only one, very cheap
−
 
+
|-
−
{|class="wikitable mw-collapsible mw-collapsed sortable" style="margin:auto"
+
! 1
−
|+Improvement Traps
+
| [[61cm Quadruple (Oxygen) Torpedo Mount Late Model]]
−
! Equipment
+
| 3
−
|-
+
| Best torpedo in most situation, especially on some IJN ships
−
| [[Prototype 35.6cm Triple Gun Mount]]
+
|-
−
|-
+
! 2
−
| [[Prototype 46cm Twin Gun Mount]]
+
| [[61cm Quintuple (Oxygen) Torpedo Mount]]
 +
| 3
 +
| Great torpedo for most ships
 +
|-
 +
! 2
 +
| [[Prototype 61cm Sextuple (Oxygen) Torpedo Mount]]
 +
| 5
 +
| Great torpedo for most ships
 +
|-
 +
! 7
 +
| [[Type 13 Air Radar Kai (Late Model)]]
 +
| 3
 +
| A dual-purpose radar, with good bonuses and usable in the [[RE]] of some IJN ships
 +
|-
 +
! 8
 +
| [[SG Radar (Initial Model)]]
 +
| 6
 +
| Best small dual-purpose radar, should become upgradable in the future, very expensive
 +
|-
 +
! 8
 +
| [[Type 21 Air Radar Kai 2]]
 +
| 5
 +
| Great dual-purpose radar for some ships
 +
|-
 +
! 10
 +
| [[SK + SG Radar]]
 +
| 6
 +
| A dual-purpose radar, with only LoS as a good stat
 +
|-
 +
! 6
 +
| [[Type 32 Surface Radar Kai]]
 +
| 5
 +
| Best large surface radar, providing LoS and Acc
 +
|-
 +
! 5
 +
| [[Type 3 Active Sonar]]
 +
| 2
 +
| Good for ASW, cheap
 +
|-
 +
! 3
 +
| [[Type 3 Active Sonar Kai]]
 +
| 4
 +
| Good for ASW, with some bonuses on IJN ships
 +
|-
 +
! 3
 +
| [[Type 4 Passive Sonar]]
 +
| 3
 +
| Good for ASW, cheap
 +
|-
 +
! 10
 +
| [[Type 0 Passive Sonar]]
 +
| 3
 +
| Unusable on most ASW ships, gives bonuses on some ships
 +
|-
 +
! 4
 +
| [[Type 2 Depth Charge]]
 +
| 2
 +
| Good for ASW, with AP, cheap
 +
|-
 +
! 6
 +
| [[Type 3 Depth Charge Projector]]
 +
| 2
 +
| Good for ASW, cheap
 +
|-
 +
! 8
 +
| [[Type 3 Depth Charge Projector (Concentrated Deployment)]]
 +
| 3
 +
| Good for ASW
 +
|-
 +
! 3
 +
| [[Type 2 Depth Charge Kai 2]]
 +
| 3
 +
| Good for ASW, with AP
 +
|-
 +
! 2
 +
| [[Type 91 Armor Piercing Shell]]
 +
| 1
 +
| Good to improve some [[Artillery Spotting]], cheap, further upgradeable
 +
|-
 +
! 1
 +
| [[Type 1 Armor Piercing Shell]]
 +
| 1
 +
| Good to improve some [[Artillery Spotting]], further upgradeable
 +
|-
 +
! 10
 +
| [[Type 1 Armor Piercing Shell Kai]]
 +
| 7
 +
| Good to improve some [[Artillery Spotting]]
 +
|-
 +
! 1
 +
| [[Type 3 Shell]]
 +
| 4
 +
| Only gives marginal stat boost, further upgradeable
 +
|-
 +
! 2
 +
| [[Type 3 Shell Kai]]
 +
| 6
 +
| Only gives marginal stat boost and fit bonuses with improvement
 +
|-
 +
! 4
 +
| [[Type 3 Shell Kai 2]]
 +
| 6
 +
| Only gives marginal stat boost and fit bonuses with improvement
 +
|-
 +
! 4
 +
| [[2cm Flakvierling 38]]
 +
| 3
 +
| Has great fit bonuses, can be used in some [[AACI]]
 +
|-
 +
! 1
 +
| [[12cm 30-tube Rocket Launcher Kai 2]]
 +
| 4
 +
| Needed to trigger the "AARB" that negates some plane damages, can be used in some [[AACI]]
 +
|-
 +
! 5
 +
| [[25mm Triple Autocannon Mount (Concentrated Deployment)]]
 +
| 3
 +
| Good AA gun for [[AACI]]
 +
|-
 +
! 2
 +
| [[Type 94 Anti-Aircraft Fire Director]]
 +
| 2
 +
| Great to provide Acc via [[RE]] on most ships, also used for some [[AACI]]
 +
|-
 +
! 10
 +
| [[New Model High Temperature High Pressure Boiler]]
 +
| 8
 +
| Good at +7 only, to gain [[Speed]] bonuses, but cheaper elsewhere
 +
|-
 +
! 5
 +
| [[New Kanhon Design Anti-torpedo Bulge (Medium)]]
 +
| 6
 +
| Good to provide armor
 +
|-
 +
! 10
 +
| [[Pugliese Underwater Protection Bulkhead]]
 +
| 4
 +
| Can provide armor on some Italian ships
 +
|-
 +
! 5
 +
| [[New Kanhon Design Anti-torpedo Bulge (Large)]]
 +
| 6
 +
| Good to provide armor
 +
|-
 +
! 2
 +
| [[Searchlight]]
 +
| 2
 +
| Only one, for some [[Night Battle]] cases
 +
|-
 +
! 10
 +
| [[Type 96 150cm Searchlight]]
 +
| 3
 +
| Only one, mostly inferior to the base one
 +
|-
 +
! 10
 +
| [[Swordfish Mk.II Kai (Reconnaissance Seaplane Model)]]
 +
| 3
 +
| Good on some European ships
 +
|-
 +
! 3
 +
| [[Type 0 Observation Seaplane]]
 +
| 2
 +
| Good on most ships, cheap
 +
|-
 +
! 3
 +
| [[Type 0 Reconnaissance Seaplane Model 11B]]
 +
| 4
 +
| Great recon for all ships
 +
|-
 +
! 9
 +
| [[Fairey Seafox Kai]]
 +
| 4
 +
| Good on some European ships
 +
|-
 +
! 3
 +
| [[Shiun]]
 +
| 4
 +
| Best LoS recon
 +
|-
 +
! 5
 +
| [[Ro.44 Seaplane Fighter bis]]
 +
| 4
 +
| good to maintain airpower without carriers
 +
|-
 +
! 2
 +
| [[Type 2 Seaplane Fighter Kai (Skilled)]]
 +
| 7
 +
| Great to maintain airpower without carriers
 +
|-
 +
! 2
 +
| [[Kyoufuu Kai]]
 +
| 4
 +
| Great to maintain airpower without carriers
 +
|-
 +
! 2
 +
| [[Kyoufuu Kai 2]]
 +
| 7
 +
| Great to maintain airpower without carriers, best SPF
 +
|-
 +
! 10
 +
| [[Laté 298B]]
 +
| 3
 +
| Niche French SPB
 +
|-
 +
! 5
 +
| [[Zuiun (634 Air Group/Skilled)]]
 +
| 6
 +
| Great SPB with [[AAR]], providing LoS, bombing, and other stats, further upgradeable
 +
|-
 +
! 3
 +
| [[Zuiun Kai 2 (634 Air Group)]]
 +
| 8
 +
| Great SPB with [[AAR]], providing LoS, bombing, and other stats, further upgradeable
 +
|-
 +
! 10
 +
| [[S-51J Kai]]
 +
| 8
 +
| Best ASW aircraft, but extremely niche, serving for some [[OASW]]
 +
|-
 +
! 11
 +
| [[Type 3 Command Liaison Aircraft Kai]]
 +
| 3
 +
| Good ASW, but almost useless
 +
|-
 +
! 1
 +
| [[Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)]]
 +
| 2
 +
| Great against [[Installations]] in all cases
 +
|-
 +
! 1
 +
| [[Special Type 2 Amphibious Tank]]
 +
| 2
 +
| Great against [[Installations]] in all cases, and can serve for [[Resource Node|resource farming]]
 +
|-
 +
! 6
 +
| [[Toku Daihatsu Landing Craft]]
 +
| 2
 +
| Good for [[Expeditions]], increasing the gains
 +
|-
 +
! 3
 +
| [[Soukoutei (Armored Boat Class)]]
 +
| 2
 +
| Great against [[Installation]]s and [[PT Imp]]s
 +
|-
 +
! 3
 +
| [[Armed Daihatsu]]
 +
| 3
 +
| Great against [[Installation]]s and [[PT Imp]]s
 +
|-
 +
! 5
 +
| [[Skilled Deck Personnel + Aviation Maintenance Hands]]
 +
| 2
 +
| For CV(B/L) [[RE]] usage only to improve combat effectiveness
 +
|}
 +
 
 +
==Improvement Traps==
 +
Here is a list of equipment that '''should NOT''' be upgraded, as they are needed to upgrade better equipment, and thus upgrading them renders them less valuable.
 +
*Additionaly, so far, [[Submarine Equipment]] do not gain any stat from improvement.
 +
 
 +
{|class="wikitable mw-collapsible mw-collapsed sortable" style="margin:auto"
 +
|+Improvement Traps
 +
! Equipment
 +
! Notes
 +
|-
 +
| [[Prototype 35.6cm Triple Gun Mount]]
 +
|Is required for improving the [[38cm Quadruple Gun Mount Kai]]
 +
|-
 +
| [[Prototype 46cm Twin Gun Mount]]
 +
|Is required for upgrading the [[41cm Triple Gun Mount Kai]]
 +
|-
 +
| [[38cm Quadruple Gun Mount]]
 +
|Is required for improving the [[38cm Quadruple Gun Mount Kai Deux]]
 +
|-
 +
| [[38cm Quadruple Gun Mount Kai]]
 +
|Is required for improving the [[38cm Quadruple Gun Mount Kai Deux]] and upgrading itself
 
|-
 
|-
−
| [[Type 13 Air Radar Kai (Late Model)]]
+
| [[Type 22 Surface Radar Kai 4]]
 +
|Is required for improving the [[35.6cm Triple Gun Mount Kai (Dazzle Camouflage)]], [[Type 22 Surface Radar Kai 4 (Calibrated Late Model)]], [[Passive Radiolocator (E27) + Type 22 Surface Radar Kai 4 (Calibrated Late Model)]], and [[SG Radar (Initial Model)]], and upgrading the [[15.2cm Twin Gun Mount Kai]]
 
|-
 
|-
 
| [[Type 21 Air Radar Kai]]
 
| [[Type 21 Air Radar Kai]]
 +
|Is required for improving the [[15m Duplex Rangefinder + Type 21 Radar Kai 2]]
 
|-
 
|-
 
| [[Zuiun Model 12 (634 Air Group)]]
 
| [[Zuiun Model 12 (634 Air Group)]]
 +
|Is required for improving the [[Zuiun Model 12 (634 Air Group)]]
 
|-
 
|-
 
| [[Tenzan Model 12A]]
 
| [[Tenzan Model 12A]]
 +
|Is required for improving the [[Type 1 Land-based Attack Aircraft Model 22A]]
 
|}
 
|}
  
 
=See Also=
 
=See Also=
 
{{Help}}
 
{{Help}}

Latest revision as of 17:26, 23 November 2024

Introduction

This article aims to provide a rough guide to help you decide on what to spend screws on. Because most improvement bonuses are "square-rooted", the first upgrade provides the largest relative gain per screw, therefore it is critical to get relevant important equipment to Improved+1 before working on others. Please refer to:

  • Improvement for more details on the stat bonuses,
  • Akashi-List for the costs involved as well as the various stats behaviors.

Bonus Growth

The following describes how stats gained through "square rooted improvement bonuses" behave depending on the base modifier.

★ Improvement Level
Modifier 1 2 3 4 5 6 7 8 9 10
0.5 0.50 0.70 0.86 1.00 1.11 1.22 1.32 1.41 1.50 1.58
0.67 0.67 0.94 1.15 1.33 1.49 1.63 1.76 1.89 2.00 2.11
0.7 0.70 0.98 1.21 1.40 1.56 1.71 1.85 1.97 2.10 2.21
0.75 0.75 1.06 1.29 1.50 1.67 1.83 1.98 2.12 2.25 2.37
1.0 1.00 1.41 1.73 2.00 2.23 2.44 2.64 2.82 3.00 3.16
1.2 1.20 1.69 2.07 2.40 2.68 2.93 3.17 3.39 3.60 3.79
1.25 1.25 1.76 2.16 2.50 2.79 3.06 3.30 3.53 3.75 3.95
1.3 1.30 1.83 2.25 2.60 2.90 3.18 3.43 3.67 3.90 4.11
1.4 1.40 1.97 2.42 2.80 3.13 3.42 3.70 3.95 4.20 4.42
1.5 1.50 2.12 2.59 3.00 3.35 3.67 3.96 4.24 4.50 4.74
2.0 2.00 2.82 3.46 4.00 4.47 4.89 5.29 5.65 6.00 6.32
3.0 3.00 4.24 5.19 6.00 6.70 7.34 7.93 8.48 9.00 9.48

1.0+1.5 Modifier

Battleships' standard setup can take advantage of the firepower Firepower bonus from the 2 Large Caliber Main Gun large main guns (x1.5) and the Armor-Piercing Shell AP shell (x1.0).

  • Highlights indicate threshold changes.
Total Gun ★ AP Shell ★
Gun 1 Gun 2 1 2 3 4 5 6 7 8 9 10
1 1 4.000 4.414 4.732 5.000 5.236 5.449 5.646 5.828 6.000 6.162
2 1 4.621 5.036 5.353 5.621 5.857 6.071 6.267 6.450 6.621 6.784
3 1 5.098 5.512 5.830 6.098 6.334 6.548 6.744 6.927 7.098 7.260
2 2 5.243 5.657 5.975 6.243 6.479 6.692 6.888 7.071 7.243 7.405
4 1 5.500 5.914 6.232 6.500 6.736 6.949 7.146 7.328 7.500 7.662
3 2 5.719 6.134 6.451 6.719 6.955 7.169 7.365 7.548 7.719 7.882
5 1 5.854 6.268 6.586 6.854 7.090 7.304 7.500 7.683 7.854 8.016
4 2 6.121 6.536 6.853 7.121 7.357 7.571 7.767 7.950 8.121 8.284
6 1 6.174 6.588 6.906 7.174 7.410 7.624 7.820 8.003 8.174 8.337
3 3 6.196 6.610 6.928 7.196 7.432 7.646 7.842 8.025 8.196 8.358
7 1 6.469 6.883 7.201 7.469 7.705 7.918 8.114 8.297 8.469 8.631
5 2 6.475 6.890 7.207 7.475 7.711 7.925 8.121 8.304 8.475 8.638
4 3 6.598 7.012 7.330 7.598 7.834 8.048 8.244 8.427 8.598 8.760
8 1 6.743 7.157 7.475 7.743 7.979 8.192 8.388 8.571 8.743 8.905
6 2 6.796 7.210 7.528 7.796 8.032 8.245 8.441 8.624 8.796 8.958
5 3 6.952 7.366 7.684 7.952 8.188 8.402 8.598 8.781 8.952 9.114
9 1 7.000 7.414 7.732 8.000 8.236 8.449 8.646 8.828 9.000 9.162
4 4 7.000 7.414 7.732 8.000 8.236 8.449 8.646 8.828 9.000 9.162
7 2 7.090 7.504 7.822 8.090 8.326 8.539 8.736 8.918 9.090 9.252
10 1 7.243 7.658 7.975 8.243 8.479 8.693 8.889 9.072 9.243 9.406
6 3 7.272 7.687 8.004 8.272 8.508 8.722 8.918 9.101 9.272 9.435
5 4 7.354 7.768 8.086 8.354 8.590 8.804 9.000 9.183 9.354 9.516
8 2 7.364 7.778 8.096 8.364 8.600 8.813 9.010 9.192 9.364 9.526
7 3 7.567 7.981 8.299 8.567 8.803 9.016 9.212 9.395 9.567 9.729
9 2 7.621 8.036 8.353 8.621 8.857 9.071 9.267 9.450 9.621 9.784
6 4 7.674 8.088 8.406 8.674 8.910 9.124 9.320 9.503 9.674 9.837
5 5 7.708 8.122 8.440 8.708 8.944 9.158 9.354 9.537 9.708 9.870
8 3 7.841 8.255 8.573 8.841 9.077 9.290 9.486 9.669 9.841 10.003
10 2 7.865 8.279 8.597 8.865 9.101 9.314 9.510 9.693 9.865 10.027
7 4 7.969 8.383 8.701 8.969 9.205 9.418 9.614 9.797 9.969 10.131
6 5 8.028 8.443 8.760 9.028 9.264 9.478 9.674 9.857 10.028 10.191
9 3 8.098 8.512 8.830 9.098 9.334 9.548 9.744 9.927 10.098 10.260
8 4 8.243 8.657 8.975 9.243 9.479 9.692 9.888 10.071 10.243 10.405
7 5 8.323 8.737 9.055 9.323 9.559 9.772 9.968 10.151 10.323 10.485
10 3 8.341 8.756 9.074 9.341 9.578 9.791 9.987 10.170 10.341 10.504
6 6 8.348 8.763 9.081 9.348 9.585 9.798 9.994 10.177 10.348 10.511
9 4 8.500 8.914 9.232 9.500 9.736 9.949 10.146 10.328 10.500 10.662
8 5 8.597 9.011 9.329 9.597 9.833 10.046 10.242 10.425 10.597 10.759
7 6 8.643 9.057 9.375 9.643 9.879 10.092 10.289 10.471 10.643 10.805
10 4 8.743 9.158 9.475 9.743 9.979 10.193 10.389 10.572 10.743 10.906
9 5 8.854 9.268 9.586 9.854 10.090 10.304 10.500 10.683 10.854 11.016
8 6 8.917 9.331 9.649 9.917 10.153 10.366 10.563 10.745 10.917 11.079
7 7 8.937 9.351 9.669 9.937 10.173 10.387 10.583 10.766 10.937 11.100
10 5 9.098 9.512 9.830 10.098 10.334 10.547 10.743 10.926 11.098 11.260
9 6 9.174 9.588 9.906 10.174 10.410 10.624 10.820 11.003 11.174 11.337
8 7 9.211 9.625 9.943 10.211 10.447 10.661 10.857 11.040 11.211 11.374
10 6 9.418 9.832 10.150 10.418 10.654 10.867 11.063 11.246 11.418 11.580
9 7 9.469 9.883 10.201 10.469 10.705 10.918 11.114 11.297 11.469 11.631
8 8 9.485 9.899 10.217 10.485 10.721 10.935 11.131 11.314 11.485 11.648
10 7 9.712 10.126 10.444 10.712 10.948 11.162 11.358 11.540 11.712 11.874
9 8 9.743 10.157 10.475 10.743 10.979 11.192 11.388 11.571 11.743 11.905
10 8 9.986 10.400 10.718 10.986 11.222 11.436 11.632 11.814 11.986 12.148
9 9 10.000 10.414 10.732 11.000 11.236 11.449 11.646 11.828 12.000 12.162
10 9 10.243 10.658 10.975 11.243 11.479 11.693 11.889 12.072 12.243 12.406
10 10 10.487 10.901 11.219 11.487 11.723 11.936 12.133 12.315 12.487 12.649

The Breakpoint Myth

Breakpoints refer to points where upgrade bonuses reach whole numbers. These points are stressed because of the way the game rounds down the results of most formulas. The misconception is that a 1.99 bonus is just as good as a 1.00 bonus because of rounding. While there is a slight grain of truth to the myth, things get a little complex in practice. Due to how many multipliers and other bonuses are involved, trying to hit equipment upgrade breakpoints doesn't affect very much in the grand scheme of things.

The most important thing to do is to upgrade your equipment to certain critical points:

  • Improved+1 : Provides the biggest power increase (square-rooted only).
  • Improved+6 : The point when failures start to kick in and costs take a jump.
  • Max-Improved : The final step to maximize upgrade bonuses.

Screw Guaranteeing/Saving

In most cases, it is statistically cheaper to either toggle or not the "guaranteed improvement".

Reminder :

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%

Average screw cost when not guaranteed, assuming Akashi is Kai and not counting any equipment cost:

Average costs.png

As expected, when the guaranteed cost is too high, not guaranteeing the upgrade is on average cheaper screw-wise, but this is not counting any potential equipment that may be lost and so may imply a higher screw cost.

Guaranteeing worthiness per base upgrade screw cost can then be defined as followed:

When upgrading any equipment, Devmats and Screw are consumed, and eventually one or several equipment and consumables.

  • Since obtaining Devmats is not an issue, their cost is simply ignored.
  • Since failing an upgrade does not consume any consumables, they are ignored.
  • For equipment consumed :
    • If they are craftable or relatively easy to obtain, their cost is negligible in front of any screw cost.
    • If the equipment consumed is a very rare one, then guaranteeing the upgrade should be evident.
    • If the equipment consumed is itself made via Akashi's upgrades, then its total screw cost must be added to the base screw costs used in later examples.

guaranteed cost 1st time guaranteeing is worth it (in Improved)
0 6th Improved
1+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
1 6th Improved
2+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
2 6th Improved
3 Max-Improved
4+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
3 6th Improved
4 8th Improved
5+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
4 6th Improved
5 8th Improved
6 Max-Improved
7+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
5 6th Improved
6 7th Improved
7 9th Improved
8 Max-Improved
9+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
6 6th Improved
7 7th Improved
8 9th Improved
9 Max-Improved
10+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
7 6th Improved
8 7th Improved
9 8th Improved
10 9th Improved
11 Max-Improved
12+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
8 6th Improved
9 7th Improved
10 8th Improved
11 9th Improved
12 Max-Improved
13+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
9 6th Improved
10 6th Improved
11 8th Improved
12 9th Improved
13 9th Improved
14 Max-Improved
15+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
10 6th Improved
11 6th Improved
12 7th Improved
13 9th Improved
14 9th Improved
15 Max-Improved
16 Max-Improved
17+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
11 6th Improved
12 6th Improved
13 7th Improved
14 8th Improved
15 9th Improved
16 9th Improved
17 Max-Improved
18+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
12 6th Improved
13 6th Improved
14 7th Improved
15 8th Improved
16 9th Improved
17 9th Improved
18 Max-Improved
19 Max-Improved
20+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
13 6th Improved
14 6th Improved
15 7th Improved
16 8th Improved
17 9th Improved
18 9th Improved
19 9th Improved
20 Max-Improved
21+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
14 6th Improved
15 6th Improved
16 7th Improved
17 7th Improved
18 8th Improved
19 9th Improved
20 9th Improved
21 Max-Improved
22 Max-Improved
23+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
15 6th Improved
16 6th Improved
17 7th Improved
18 7th Improved
19 8th Improved
20 9th Improved
21 9th Improved
22 9th Improved
23 Max-Improved
24 Max-Improved
25+ Never

There is only one equipment with a base brut screw cost above 15 (the SK Radar), and as every equipment consuming expensive "Akashi exclusive" or rare equipment, the average screw cost is less important that the raw cost, meaning that guaranteeing the upgrade is always worth it

Improvement Guide

The following guide was made by few players and has not been scrutinized enough.
Beware of potential biases.

Several rankings for equipment improvements. Do note that:

  • Equipments to upgrade/improve are ranked from most advisable at 1, to least advisable at 10.
  • Many equipment possibly improbable are omitted, as they are either:
    • Already listed in one of the lists,
    • Are obtainable elsewhere for cheaper,
    • Are just not worth improving or upgrading.
  • Some equipment can be in several lists.

Quests Improvements

Several Quests require specific equipment to be upgraded in order to be completed, while others simply allow the use of upgraded equipment for conversion.

Quests Requirements

Here is the list of equipment that required to be improved to complete some quests:

  • All improvements are lost during conversions.
Quests Requirements
Quest Equipment Improved Level Notes
F36 61cm Triple (Oxygen) Torpedo Mount
61cm Quintuple (Oxygen) Torpedo Mount		 Max-Improved Both
F51 Type 2 Seaplane Fighter Kai Max-Improved
F52 Type 2 Seaplane Fighter Kai Max-Improved
F58 Zuiun (634 Air Group) Max-Improved
F61 F6F-3 Max-Improved
F63 F6F-5 Max-Improved
F74 Prototype 41cm Triple Gun Mount Max-Improved
F76 12.7cm Twin Gun Mount Model A Kai 2 Max-Improved
F78 12.7cm Twin Gun Mount Model B Kai 2 Max-Improved
F87 Zuiun Kai Ni (634 Air Group) Max-Improved
F101 Type 0 Reconnaissance Seaplane Model 11B Max-Improved
F103 Type 3 Active Sonar Max-Improved
F104 Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force) Max-Improved
F105 Type 1 Land-based Attack Aircraft Model 22A Max-Improved Requires to craft 8 Tenzan Model 12A
F111 Type 98 Reconnaissance Seaplane (Night Recon)
Type 0 Reconnaissance Seaplane Model 11B		 Max-Improved Both
F116 35.6cm Twin Gun Mount Kai San (Dazzle Camouflage) Improved+3 All Improved past 3 are lost on conversion
F117 Late Model Bow Torpedo Mount (6 tubes) Max-Improved
F120 12.7cm Twin Gun Mount Model D Kai 2 Improved+8 All Improved past 8 are lost on conversion
F121 Type 13 Air Radar Kai (Late Model) Improved+4 All Improved past 4 are lost on conversion
F122 Type 22 Surface Radar Kai 4 Max-Improved
F122 Type 0 Reconnaissance Seaplane Model 11B Max-Improved
Fq1 Type 96 Fighter Max-Improved
Fq7 12.7cm Twin Gun Mount Model A Kai 2 Max-Improved
Fy2 Swordfish Max-Improved
Fy10 Type 0 Reconnaissance Seaplane Max-Improved

Ultra Highly Advised

It is highly recommended to improve the following equipment to Max-Improved before proceeding with those quests as any Improved are carried over to the reward , and the rewards cannot be improved afterward!

Ultra Highly Advised
Quest Equipment
F13 Type 97 Torpedo Bomber (Tomonaga Squadron)
F14 Type 99 Dive Bomber (Egusa Squadron)
F15 Zero Fighter Model 52C (601 Air Group)

Highly Advised

In those quests, any Improved the equipment has, are carried over to the reward. It is therefore advised to upgrade the equipment before completing the quest, as it is cheaper to do so.

Highly Advised
Quest Equipment Notes
F19 Type 97 Torpedo Bomber (Murata Squadron) Not improvable yet
F24 Type 0 Fighter Model 21 (Skilled) It is advised to start improvements with Fm1 for this chain.
F26 Type 0 Fighter Model 52 (Skilled)
F27 Zero Fighter Model 52C (w/ Iwai Flight)
  • Best obtainable fighter in the game
F28 Type 0 Fighter Model 21 (Skilled) It is advised to start improvements with Fm1 for this chain.
F29 Zero Fighter Model 21 (w/ Iwamoto Flight)
F30 Zero Fighter Model 52A (w/ Iwamoto Flight)
Fm1 Type 0 Fighter Model 21 Is the start of most improvement quests chains
Fm2 Type 0 Fighter Model 21 (Skilled) It is advised to start improvements with Fm1.
  • Good LBAS fighter with 7 range

Traps

Some quests allow the use of upgraded equipment for completion, but will not keep any of the current equipment improvements, and so should be cleared with unimproved equipment:

Traps
Quest Equipment Notes
F40 Type 1 Land-based Attack Aircraft
F62 TBF
F86 Suisei Model 12A
F89 7.7mm Machine Gun
F107 Ki-102 B
F112 5inch Single Gun Mount Mk.30
F115 Smoke Generator (Smoke Screen)
F116 35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage) Past +3
F120 12.7cm Twin Gun Mount Model D Kai 2 Past +8
F121 Type 22 Surface Radar Kai 4 (Calibrated Late Model)
F121 Type 13 Air Radar Kai (Late Model) Past +4
F123 Type 3 Depth Charge Projector
F124 Type 13 Air Radar
F125 38cm Quadruple Gun Mount Kai x2
F127 Tenzan Model 12 (Murata Squadron)
Fq2 Type 96 Land-based Attack Aircraft
Fq5 Type 0 Fighter Model 52

Collection Improvements

Some equipment are only obtainable via Akashi upgrades.

  • The list can be found here
  • If completing the Kancodex is a personal goal, then crafting those equipment becomes a necessity in the long run.
  • Making all those equipment should NOT be a priority over the rest, as most are not very useful or even useless.
  • See below for when making those equipment overlap with advised improvements.

Upgrade Advice

Here is a list of improvements that have as a main goal to "upgrade" said equipment into a better one.

  • Do note that certain upgrades can be done in chains, with part of the chain ranging from worse than the upgrade, equivalent to, or even better.
  • The "Total Srew Cost" is given as an indication, but does not reflect "real" with guaranteeing savings and consumed equipment being great factors to take into account.
  • Several good equipment are not listed there as they can be obtained otherwise more cheaply, or because the upgrade is just not worth it.
Upgrade Advice
Priority Level Equipment Goal Equipment To Upgrade Total Srew Cost Further Improvable? Other Sources Notes
6 41cm Triple Gun Mount Kai Prototype 41cm Triple Gun Mount 69 Yes N/A A good gun for BB(V), further upgradable.
  • The Prototype 41cm is also useful in the making
8 41cm Twin Gun Mount Kai 2 41cm Triple Gun Mount Kai 92 Yes B130 A good gun for BB(V), especially IJN ones
6 41cm Triple Gun Mount Kai 2 41cm Triple Gun Mount Kai 93 Yes F74 A good gun for BB(V), especially IJN ones
  • The 41cm Kai is also useful in the making
2 12cm 30 Tube Rocket Launcher Kai 2 12cm 30-tube Rocket Launcher 40 Yes B114 Needed to trigger the "AARB" that negate some plane damages
  • A goal is to 6, enough to equip a full "carrier fleet".
2 Type 2 Seaplane Fighter Kai Type 0 Reconnaissance Seaplane 40 Yes B88 Good to maintain airpower without carriers
  • The goal is to have at least 6 good SPF
3 Kyoufuu Kai Type 2 Seaplane Fighter Kai 77 Yes B95, B167 Great to maintain airpower without carriers
  • The T2 SPF Kai is also useful in the making
  • The goal is to have at least 6 good SPF
2 Type 1 Armor Piercing Shell Type 91 Armor Piercing Shell 22 Yes B31, B32 Good AP shell improving some Artillery Spotting, cheap to make
10 Type 1 Armor Piercing Shell Kai Type 1 Armor Piercing Shell 35 Yes N/A The best AP shell improving some Artillery Spotting, but extremely expensive
1 Special Type 2 Amphibious Tank Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force) 39 Yes F33 Great against Installations in all cases, and can serve for resource farming
1 Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force) Daihatsu Landing Craft 24 Yes N/A Great against Installations in all cases
4 Toku Daihatsu Landing Craft Daihatsu Landing Craft 29 Yes B85 Good for Expeditions, increasing the gains
5 Armed Daihatsu Daihatsu Landing Craft 23 Yes N/A Great against Installations and PT Imps
5 F6F-5 F6F-3 70 Yes N/A A +10 airpower fighter, great to reach air superiority
7 Type 0 Fighter Model 64 (Skilled Fighter-bomber) Type 0 Fighter Model 64 (Air Superiority Fighter Specification) 70 Yes N/A Good all round fighter-bomber with AAR
5 Shiden Kai 4 Shiden Kai 2 59 Yes N/A +10 airpower fighter, great to reach air superiority
8 Seafire Mk.III Kai Spitfire Mk.V 49 No N/A Good fighter, with bonuses in some "European Events"
3 Spitfire Mk.V Spitfire Mk.I 33 Yes N/A Great interceptor, further improbable, with bonuses in some "European Events"
6 Re.2005 Kai Re.2001 CB Kai 60 No N/A +11 airpower fighter, with bonuses in some "European Events"
10 Re.2001 CB Kai Re.2001 OR Kai 49 Yes N/A Only used to make the Re.2005 Kai
10 Fulmar (Reconnaissance Fighter/Skilled) Fulmar 39 No N/A Only useful in some "European Events"
9 Type 99 Dive Bomber Model 22 (Skilled) Type 99 Dive Bomber Model 22 36 Yes N/A A medium Anti-Installation dive-bomber
6 SB2C-3 SBD-5 43 No N/A Good Anti-Installation dive-bomber, with bonuses in some "European Events"
8 Prototype Type 97 Torpedo Bomber Kai (Skilled) No. 3 Model E (w/ Type 6 Airborne Radar Kai) Type 97 Torpedo Bomber (Skilled) 45 No N/A A good night bomber
10 Tenzan Model 12A Tenzan 34 Yes B169 Ok torpedo bomber, mostly used to improve the Type 1 Land-based Attack Aircraft Model 22A
9 Tenzan Model 12A Kai (w/ Type 6 Airborne Radar Kai) Prototype Type 97 Torpedo Bomber Kai No. 3 Model E (w/ Type 6 Airborne Radar Kai) 63 No B154, B169 Best craftable night bomber
5 Jet Keiun Kai Prototype Keiun (Carrier-based Reconnaissance Model) 86 No N/A A Jet, coming with unique behaviors and great stats
8 Type 2 Two-seat Fighter Toryuu Model C Type 2 Two-seat Fighter Toryuu 33 Yes N/A OK interceptor, mostly a step towards the Ki-96
3 Ki-96 Type 2 Two-seat Fighter Toryuu Model C 38 Yes N/A Best craftable interceptor
8 Ki-102 B Ki-96 60 No N/A Good LBB stat-wise, but with low range
5 Type 1 Fighter Hayabusa Model III A Type 1 Fighter Hayabusa Model II 39 Yes N/A Good interceptor
6 Shiden Kai (343 Air Group) 301st Fighter Squadron Shiden Model 21 Shiden Kai 71 No N/A Great interceptor
7 Do 217 E-5 + Hs293 Initial Model Do 17 Z-2 63 No N/A A great LBB with AAR but with low range, with bonuses in some "European Events"
10 Type 1 Land-based Attack Aircraft Model 34 Type 1 Land-based Attack Aircraft Model 22A 56 Yes B154 Best craftable LBB, but is the most expensive equipment in the game:
7 Type 4 Heavy Bomber Hiryuu (Skilled) Type 4 Heavy Bomber Hiryuu 72 No N/A A great LBB with AAR but with low range
10 12cm Single Gun Mount Kai 2 12cm Single Gun Mount 19 Yes N/A A good very niche small gun
9 Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4 12.7cm Twin Gun Mount Model A Kai 2 38 Yes B179 A good very niche small gun, with great bonuses on some IJN ships
3 5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37 5inch Single Gun Mount Mk.30 Kai 101 No N/A Best AACI small gun, with high AA, and required in some AACI
9 12.7cm Twin Gun Mount Model C Kai 3 12.7cm Twin Gun Mount Model C Kai 2 34 Yes B184, B192 A good small gun, with great bonuses on some IJN ships
5 14cm Twin Gun Mount Kai 14cm Twin Gun Mount 17 Yes B140, F118 Great medium gun on some IJN ships with fit bonuses
  • Rarely more than 4 are needed
3 15.2cm Twin Gun Mount Kai 2 15.2cm Twin Gun Mount Kai 44 Yes B164, B168, C57 Best CL gun, with good FP and great Acc
3 15.2cm Twin Gun Mount Kai 15.2cm Twin Gun Mount 36 Yes Noshiro Kai NiNoshiro Kai Ni, F119 Best CL gun in the game, with good FP and great Acc
9 15.5cm Triple Gun Mount Kai 15.5cm Triple Gun Mount 34 Yes N/A Good CL gun with higher FP
8 15.5cm Triple Secondary Gun Mount Kai 15.5cm Triple Secondary Gun Mount 34 Yes N/A Good surface secondary gun, especially for CLT or in cases of air parity or worse
5 15.5cm Triple Secondary Gun Mount Kai 2 15.5cm Triple Secondary Gun Mount Kai 53 No B181, B182 x2 Best surface secondary gun, especially for CLT or in cases of air parity or worse
10 8inch Triple Gun Mount Mk.9 mod.2 8inch Triple Gun Mount Mk.9 42 Yes N/A Best cruiser gun for FP, useful on CA in Main Combined Fleets
7 35.6cm Triple Gun Mount Kai (Dazzle Camouflage) 35.6cm Twin Gun Mount (Dazzle Camouflage) 43 Yes N/A Great gun for FBB, with good stats, especially Acc
6 35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage) 35.6cm Triple Gun Mount Kai (Dazzle Camouflage) 70 Yes B190, C74 Great gun for FBB, with good stats, especially Acc
9 16inch Mk.VIII Twin Gun Mount Kai 16inch Mk.V Twin Gun Mount 56 Yes N/A Good gun for BB(V) with medium stats
10 38.1cm Mk.I/N Twin Gun Mount Kai 38.1cm Mk.I Twin Gun Mount 48 Yes N/A Good gun for FBB with medium stats
9 16inch Mk.I Triple Gun Mount Kai + FCR Type 284 16inch Mk.I Triple Gun Mount + AFCT Kai 68 Yes N/A Good gun for BB(V) with high Acc, and used is an AACI
7 46cm Triple Gun Mount Kai 46cm Triple Gun Mount 69 Yes B182 Very niche, with long range, good FP and Acc, best gun for the Yamato-class
10 51cm Twin Gun Mount Prototype 51cm Twin Gun Mount 85 Yes N/A Very niche, mostly used for its great FP
5 16inch Triple Gun Mount Mk.7 + GFCS 16inch Triple Gun Mount Mk.7 100 Yes N/A Great gun for (F)BB(V) with high Acc
7 8cm High-angle Gun Kai + Additional Machine Guns 8cm High-angle Gun 49 Yes B96, B167, B169 Used for RE usage only, to maintain Artillery Spotting on some ships
9 Type C Kouhyouteki Type A Kouhyouteki 28 No B167 A better Minisub at +14 torpedo stat
5 Type 13 Air Radar Kai (Late Model) Type 13 Air Radar Kai 55 Yes N/A A dual-purpose radar, with good bonuses and usable in the RE of some IJN ships
6 15m Duplex Rangefinder Kai + Type 21 Radar Kai 2 + Skilled Fire Direction Center 15m Duplex Rangefinder + Type 21 Radar Kai 2 80 Yes N/A A dual-purpose radar providing LoS, Acc, and AA, great for all (F)BB(V), especially the Yamato-class
  • The base Duplex is also useful in the making
10 SK + SG Radar SK Radar 94 Yes N/A A dual-purpose radar, with only LoS as a good stat
9 Type 32 Surface Radar Kai Type 32 Surface Radar 58 Yes N/A Best large surface radar, providing LoS and Acc
6 Type 4 Passive Sonar Type 93 Passive Sonar 29 Yes B74 Good sonar at +12 ASW, helping to reach some OASW
5 Type144/147 ASDIC Type124 ASDIC 57 No Janus KaiJanus Kai Good sonar at +13 ASW, helping to reach some OASW
10 Type 3 Shell Kai Type 3 Shell 60 Yes N/A Only gives marginal stat boost and fit bonuses
7 QF 2-pounder Octuple Pom-pom Gun Mount Bi Type 40mm Twin Autocannon Mount 19 Yes Ark Royal KaiArk Royal Kai, Warspite KaiWarspite Kai Great AA gun useful in AACI, very cheap
6 Zuiun Model 12 (634 Air Group) Zuiun Model 12 69 Yes N/A Good SPB with AAR, providing LoS, bombing, and other stats, further upgradeable and consumed to improve later variants
4 Zuiun (634 Air Group/Skilled) Zuiun Model 12 (634 Air Group) 56 Yes F58 Great SPB with AAR, providing LoS, bombing, and other stats, further upgradeable
3 Zuiun Kai 2 (634 Air Group) Zuiun (634 Air Group/Skilled) 86 Yes B132 Great SPB with AAR, providing LoS, bombing, and other stats, further upgradeable
1 Prototype Night Zuiun (Attack Equipment) Zuiun Kai 2 (634 Air Group) 110 Yes N/A Best SPB, with a special Night Cut-In
10 S-51J Kai S-51J 96 Yes N/A Best ASW aircraft, but extremely niche, serving for some OASW
6 Type 4 20cm Anti-ground Rocket Launcher (Concentrated Deployment) Shipborne Model Type 4 20cm Anti-ground Rocket Launcher 53 No N/A Good for Anti-Installation only, giving some side bonuses, and equipable on more ships than "landing equipment"
4 Ryuusei Kai (Skilled) Ryuusei Kai 47 Yes N/A Great torpedo bomber with AAR

Improvement Advice

Here is a list of improvements that have as a main goal to "enhance" said equipment's stats.

  • In some cases, the equipment can be upgraded, but the upgrade is inferior to the improved base equipment,
  • In some cases, the improved equipment only shows its best potential on certain ships, thanks to Visible Fit Bonuses,
  • Some of the listed equipment below are obtained from above listed upgrades,
  • Equipment being improved only for upgrade purposes are not listed there,
  • The improvements related to Quests are not listed there, and should be done with the quests in mind.
Improvement Advice
Priority Level Equipment Base Screw Cost Notes
1 Combat Ration 0 Only used to farm screws with Fd6
1 Shiden Kai 4 4 +12 airpower fighter, great to reach air superiority
3 F6F-5 6 +12 airpower fighter, great to reach air superiority
7 Type 0 Fighter Model 64 (Air Superiority Fighter Specification) 5 +11 airpower fighter, great to reach air superiority
5 Type 0 Fighter Model 64 (Skilled Fighter-bomber) 6 Good all round fighter-bomber with AAR
10 Type 0 Fighter Model 64 (Two-seat w/ KMX) 5 Very niche fighter-bomber with ASW
9 Type 99 Dive Bomber Model 22 (Skilled) 3 Medium Anti-Installation dive-bomber
10 Swordfish Mk.II (Skilled) 3 Torpedo bomber with bonuses in some "European Events"
9 TBF 3 Torpedo bomber with bonuses in some "European Events"
10 Type 2 Reconnaissance Aircraft 3 Ultra niche role as a Range extender
3 Ki-96 4 Great interceptor in all cases
5 Type 1 Fighter Hayabusa Model III A 4 Good interceptor and a decent LB fighter
2 Spitfire Mk.V 3 Great interceptor and a decent LB fighter, with bonuses in some "European Events"
10 Bomb-carrying Type 1 Fighter Hayabusa Model III Kai (65th Squadron) 4 Best LBB, but against DD only
4 Type 1 Land-based Attack Aircraft Model 34 5 Great LBB, with high stats and good range
9 Type 1 Land-based Attack Aircraft (Hachiman Force) 3 Good LBB, with good stats and good range, cheap
5 Type 1 Land-based Attack Aircraft (Nonaka Squadron) 5 Great LBB with AAR, high stats and good range
10 12cm Single Gun Mount Kai 2 2 A good very niche small gun, cheap
8 12.7cm Twin Gun Mount Model A Kai 2 2 A good small gun with great bonuses on some IJN ships, further upgradable, cheap
5 Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4 3 A good very niche small gun, with great bonuses on some IJN ships
4 12.7cm Twin Gun Mount Model A Kai 3 (Wartime Modification) + Anti-Aircraft Fire Director 4 A great niche small gun for AACI, with great bonuses on some IJN ships
9 12.7cm Single High-angle Gun Mount (Late Model) 2 Only one, very niche use as an Acc boost on Yura
6 12.7cm Twin Gun Mount Model C Kai 2 2 A good small gun, with great bonuses on some IJN ships
3 12.7cm Twin Gun Mount Model C Kai 3 5 A good small gun, with great bonuses on some IJN ships
1 12.7cm Twin Gun Mount Model D Kai 2 5 Best DD gun, with special bonuses for Night Cut-Ins
9 130mm B-13 Twin Gun Mount 5 A good niche small gun with FP
6 5inch Single Gun Mount Mk.30 Kai 7 A good small gun for AACI, required in some, further upgradeable
3 12.7cm Twin Gun Mount Model B Kai 4 (Wartime Modification) + Anti-Aircraft Fire Director 6 A great small gun for AACI, with great bonuses on some IJN ships
1 10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director 3 2nd best AACI small gun, great on all DD as a default gun choice
  • No more than 10 are needed
4 14cm Twin Gun Mount Kai 3 Great medium gun on some IJN ships with fit bonuses
  • Rarely more than 4 are needed
6 Bofors 15.2cm Twin Gun Mount Model 1930 3 Good CL gun, with good FP and great Acc
5 15.2cm Twin Gun Mount Kai 2 Great CL gun, with good FP and great Acc
1 15.2cm Twin Gun Mount Kai 2 3 The Best CL gun, with good FP and great Acc
8 15.5cm Triple Gun Mount Kai 4 Good CL gun with higher FP
2 20.3cm (No.2) Twin Gun Mount 2 Great CA gun with high FP and Acc
1 20.3cm (No.3) Twin Gun Mount 2 Great CA gun with high FP and Acc
6 8inch Triple Gun Mount Mk.9 2 2nd best cruiser gun for FP, useful on CA in Main Combined Fleets
4 8inch Triple Gun Mount Mk.9 mod.2 3 Best cruiser gun for FP, useful on CA in Main Combined Fleets
7 16inch Triple Gun Mount Mk.6 mod.2 4 Good gun for BB(V) with medium stats
4 16inch Triple Gun Mount Mk.7 + GFCS 8 Great gun for (F)BB(V) with high Acc
9 16inch Mk.VIII Twin Gun Mount Kai 5 Good gun for BB(V) with medium stats
8 16inch Mk.I Triple Gun Mount Kai + FCR Type 284 5 Good gun for BB(V) with high Acc, and used is an AACI
10 30.5cm Triple Gun Mount Kai 4 Good gun for Gangut only
9 38.1cm Mk.I/N Twin Gun Mount Kai 3 Good gun for BB(V) with high Acc, and used is an AACI
10 38cm Twin Gun Mount Kai 3 Medium gun for FBB with medium stats
4 35.6cm Triple Gun Mount Kai (Dazzle Camouflage) 4 Great gun for FBB, with good stats, especially Acc
4 35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage) 6 Great gun for FBB, with good stats, especially Acc
2 38cm Quadruple Gun Mount Kai 7 Great gun for all (F)BB(V), especially FBB, with great stats, especially Acc
4 41cm Triple Gun Mount Kai 2 7 A great gun for BB(V), especially IJN ones
4 41cm Triple Gun Mount Kai 2 7 A great gun for BB(V), especially IJN ones
5 46cm Triple Gun Mount Kai 7 Very niche, with long range, good FP and Acc, best gun for the Yamato-class
8 51cm Twin Gun Mount 7 Very niche, mostly used for its great FP
4 8cm High-angle Gun Kai + Additional Machine Guns 4 Used for RE usage only, to maintain Artillery Spotting on some ships
8 90mm Single High-angle Gun Mount 1 Good for AACI, very cheap
9 10cm Twin High-angle Gun Mount Kai + Additional Machine Guns 4 Used for RE usage only, to maintain Artillery Spotting on some ships
5 10cm Twin High-angle Gun Mount Battery Concentrated Deployment 5 Best secondary gun for AACI
8 15.2cm Triple Gun Mount 6 OK secondary with bonuses on French ships
5 15.5cm Triple Secondary Gun Mount Kai 4 Good surface secondary gun, especially for CLT or in cases of air parity or worse
2 OTO 152mm Triple Rapid Fire Gun Mount 2 2nd best surface secondary gun, especially for CLT or in cases of air parity or worse
7 53cm Twin Torpedo Mount 1 Only one, very niche, cheap
5 533mm Quintuple Torpedo Mount (Initial Model) 3 Only good for USN ships
4 61cm Triple (Oxygen) Torpedo Mount Late Model 3 Best torpedo for some IJN ships
3 61cm Quadruple (Oxygen) Torpedo Mount 1 Only one, very cheap
1 61cm Quadruple (Oxygen) Torpedo Mount Late Model 3 Best torpedo in most situation, especially on some IJN ships
2 61cm Quintuple (Oxygen) Torpedo Mount 3 Great torpedo for most ships
2 Prototype 61cm Sextuple (Oxygen) Torpedo Mount 5 Great torpedo for most ships
7 Type 13 Air Radar Kai (Late Model) 3 A dual-purpose radar, with good bonuses and usable in the RE of some IJN ships
8 SG Radar (Initial Model) 6 Best small dual-purpose radar, should become upgradable in the future, very expensive
8 Type 21 Air Radar Kai 2 5 Great dual-purpose radar for some ships
10 SK + SG Radar 6 A dual-purpose radar, with only LoS as a good stat
6 Type 32 Surface Radar Kai 5 Best large surface radar, providing LoS and Acc
5 Type 3 Active Sonar 2 Good for ASW, cheap
3 Type 3 Active Sonar Kai 4 Good for ASW, with some bonuses on IJN ships
3 Type 4 Passive Sonar 3 Good for ASW, cheap
10 Type 0 Passive Sonar 3 Unusable on most ASW ships, gives bonuses on some ships
4 Type 2 Depth Charge 2 Good for ASW, with AP, cheap
6 Type 3 Depth Charge Projector 2 Good for ASW, cheap
8 Type 3 Depth Charge Projector (Concentrated Deployment) 3 Good for ASW
3 Type 2 Depth Charge Kai 2 3 Good for ASW, with AP
2 Type 91 Armor Piercing Shell 1 Good to improve some Artillery Spotting, cheap, further upgradeable
1 Type 1 Armor Piercing Shell 1 Good to improve some Artillery Spotting, further upgradeable
10 Type 1 Armor Piercing Shell Kai 7 Good to improve some Artillery Spotting
1 Type 3 Shell 4 Only gives marginal stat boost, further upgradeable
2 Type 3 Shell Kai 6 Only gives marginal stat boost and fit bonuses with improvement
4 Type 3 Shell Kai 2 6 Only gives marginal stat boost and fit bonuses with improvement
4 2cm Flakvierling 38 3 Has great fit bonuses, can be used in some AACI
1 12cm 30-tube Rocket Launcher Kai 2 4 Needed to trigger the "AARB" that negates some plane damages, can be used in some AACI
5 25mm Triple Autocannon Mount (Concentrated Deployment) 3 Good AA gun for AACI
2 Type 94 Anti-Aircraft Fire Director 2 Great to provide Acc via RE on most ships, also used for some AACI
10 New Model High Temperature High Pressure Boiler 8 Good at +7 only, to gain Speed bonuses, but cheaper elsewhere
5 New Kanhon Design Anti-torpedo Bulge (Medium) 6 Good to provide armor
10 Pugliese Underwater Protection Bulkhead 4 Can provide armor on some Italian ships
5 New Kanhon Design Anti-torpedo Bulge (Large) 6 Good to provide armor
2 Searchlight 2 Only one, for some Night Battle cases
10 Type 96 150cm Searchlight 3 Only one, mostly inferior to the base one
10 Swordfish Mk.II Kai (Reconnaissance Seaplane Model) 3 Good on some European ships
3 Type 0 Observation Seaplane 2 Good on most ships, cheap
3 Type 0 Reconnaissance Seaplane Model 11B 4 Great recon for all ships
9 Fairey Seafox Kai 4 Good on some European ships
3 Shiun 4 Best LoS recon
5 Ro.44 Seaplane Fighter bis 4 good to maintain airpower without carriers
2 Type 2 Seaplane Fighter Kai (Skilled) 7 Great to maintain airpower without carriers
2 Kyoufuu Kai 4 Great to maintain airpower without carriers
2 Kyoufuu Kai 2 7 Great to maintain airpower without carriers, best SPF
10 Laté 298B 3 Niche French SPB
5 Zuiun (634 Air Group/Skilled) 6 Great SPB with AAR, providing LoS, bombing, and other stats, further upgradeable
3 Zuiun Kai 2 (634 Air Group) 8 Great SPB with AAR, providing LoS, bombing, and other stats, further upgradeable
10 S-51J Kai 8 Best ASW aircraft, but extremely niche, serving for some OASW
11 Type 3 Command Liaison Aircraft Kai 3 Good ASW, but almost useless
1 Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force) 2 Great against Installations in all cases
1 Special Type 2 Amphibious Tank 2 Great against Installations in all cases, and can serve for resource farming
6 Toku Daihatsu Landing Craft 2 Good for Expeditions, increasing the gains
3 Soukoutei (Armored Boat Class) 2 Great against Installations and PT Imps
3 Armed Daihatsu 3 Great against Installations and PT Imps
5 Skilled Deck Personnel + Aviation Maintenance Hands 2 For CV(B/L) RE usage only to improve combat effectiveness

Improvement Traps

Here is a list of equipment that should NOT be upgraded, as they are needed to upgrade better equipment, and thus upgrading them renders them less valuable.

Improvement Traps
Equipment Notes
Prototype 35.6cm Triple Gun Mount Is required for improving the 38cm Quadruple Gun Mount Kai
Prototype 46cm Twin Gun Mount Is required for upgrading the 41cm Triple Gun Mount Kai
38cm Quadruple Gun Mount Is required for improving the 38cm Quadruple Gun Mount Kai Deux
38cm Quadruple Gun Mount Kai Is required for improving the 38cm Quadruple Gun Mount Kai Deux and upgrading itself
Type 22 Surface Radar Kai 4 Is required for improving the 35.6cm Triple Gun Mount Kai (Dazzle Camouflage), Type 22 Surface Radar Kai 4 (Calibrated Late Model), Passive Radiolocator (E27) + Type 22 Surface Radar Kai 4 (Calibrated Late Model), and SG Radar (Initial Model), and upgrading the 15.2cm Twin Gun Mount Kai
Type 21 Air Radar Kai Is required for improving the 15m Duplex Rangefinder + Type 21 Radar Kai 2
Zuiun Model 12 (634 Air Group) Is required for improving the Zuiun Model 12 (634 Air Group)
Tenzan Model 12A Is required for improving the Type 1 Land-based Attack Aircraft Model 22A

See Also

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Tutorials, Help, & Basic Game Mechanics
Basics
Base Management
Combat
Advanced Topics
Miscellaneous
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