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edits
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WIP
The effect given by improvements for every equipment categories.
*Note that those categories do not perfectly match in-game equipment categories (eg. Dive Bombers & Fighter-Bombers).
The improvement effects are unknown for:
* {{Land-Based Recon}} [[:Category:Land-based Reconnaissance Aircraft|Land-Based Recons]].
* {{SubmarineRadar}} [[:Category:Submarine Equipment|Submarine Equipment]].
* {{CommandFacility}} {{EquipmentLink|Fleet Command Facility|Striking Force Fleet Command Facility|Elite Torpedo Squadron Command Facility|link_category=Command Facilities|text=Command Facilities}}.
* {{Rations}} {{EquipmentLink|Combat Ration|Combat Ration (Special Onigiri)|Canned Saury|text=Rations|link_category=Combat Rations}}.
===(Very) Large guns===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedGunHeavy}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.50|| 2.12|| 2.59|| 3.00|| 2.35|| 3.67|| 3.96|| 4.24|| 4.50|| 4.74
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Medium (Red) guns===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedGunMedium}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Small (Red) guns===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedGunLight}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green main 7- AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Main Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{AA}} Ship
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{AA}} Flett
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green main 8+ AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Main Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{AA}} Ship
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{AA}} Flett
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===90mm Single High-angle Gun Mount===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sec Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{AA}} Ship
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{AA}} Flett
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green sec 7- AA 4- FP===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sec Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{NBPower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{AA}} Ship
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{AA}} Flett
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green sec 8+ AA 4- FP ===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sec Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{NBPower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{AA}} Ship
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{AA}} Flett
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green sec 8+ AA 5+ FP sec===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Sec Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|-
!{{NBPower}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|-
!{{AA}} Ship
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{AA}} Flett
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Yellow sec 4- FP===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{YellowGun}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{NBPower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Yellow sec 5+ FP===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{YellowGun}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|-
!{{NBPower}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===15.2cm Single Gun Mount & OTO 152mm Triple Rapid Fire Gun Mount===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{YellowGun}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===AAFD 7- AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{AntiAircraftFireDirector}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{AA}} Ship
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{AA}} Flett
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===AA Guns 7- AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{GreenGunMG}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Torpedo}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|-
!{{AA}} Ship
| 4.00|| 5.66|| 6.93|| 8.00|| 8.94|| 9.80|| 10.58|| 11.31|| 12.00|| 12.65
|-
!{{Hit}} Torpedo
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|}
===AA Guns 8+ AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{GreenGunMG}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Torpedo}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|-
!{{AA}} Ship
| 6.00|| 8.49|| 10.39|| 12.00|| 13.42|| 14.70|| 15.87|| 16.97|| 18.00|| 18.97
|-
!{{Hit}} Torpedo
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|}
===Torpedoes===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{TorpedoWeapon}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}} Torpedo
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|}
===Minisubs===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Minisub}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===(Large) Carrier Recons===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{YellowPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|}
===Large Flying Boats===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Flying Boat}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|}
===Seaplane Recons===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{SPR}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|}
===Seaplane Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{SPB}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Dive}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{LOS}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|}
===Liaison Aircraft===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{ASWPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{ASW}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Attackers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Land-based Attack Aircraft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|-
!{{AA}}
| 0.50|| 0.70|| 0.86|| 1.00|| 1.11|| 1.22|| 1.32|| 1.41|| 1.50|| 1.58
|}
===Assault Aircraft===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Land-based Assault Aircraft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|-
!{{AA}}
| 0.50|| 0.70|| 0.86|| 1.00|| 1.11|| 1.22|| 1.32|| 1.41|| 1.50|| 1.58
|}
===Heavy Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Land-based Aircraft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|-
!{{AA}}
| 0.50|| 0.70|| 0.86|| 1.00|| 1.11|| 1.22|| 1.32|| 1.41|| 1.50|| 1.58
|}
===Ginga & Type 1 Land-based Attack Aircraft (Nonaka Squadron)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Land-based Attack Aircraft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|-
!{{AA}}
| 0.25|| 0.50|| 0.75|| 1.00|| 1.25|| 1.50|| 1.75|| 2.00|| 2.25|| 2.50
|}
===Bomb-carrying Type 1 Fighter Hayabusa Model III Kai (65th Squadron)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{IconText|{{Interceptor Fighter2}}|bomber}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.50|| 0.70|| 0.86|| 1.00|| 1.11|| 1.22|| 1.32|| 1.41|| 1.50|| 1.58
|}
===Large Surface Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.40|| 1.97|| 2.42|| 2.80|| 3.13|| 3.42|| 3.70|| 3.95|| 4.20|| 4.42
|-
!{{Hit}}
| 1.70|| 2.40|| 2.94|| 3.40|| 3.80|| 4.16|| 4.50|| 4.81|| 5.10|| 5.38
|}
===Small Surface Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Small Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.25|| 1.76|| 2.16|| 2.50|| 2.79|| 3.06|| 3.30|| 3.53|| 3.75|| 3.95
|-
!{{Hit}}
| 1.70|| 2.40|| 2.94|| 3.40|| 3.80|| 4.16|| 4.50|| 4.81|| 5.10|| 5.38
|}
===(Very) Large Dual Purpose Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}} Flett
| 1.50|| 2.12|| 2.59|| 3.00|| 3.35|| 3.67|| 3.96|| 4.24|| 4.50|| 4.74
|-
!{{LOS}}
| 1.40|| 1.97|| 2.42|| 2.80|| 3.13|| 3.42|| 3.70|| 3.95|| 4.20|| 4.42
|-
!{{Hit}}
| 1.70|| 2.40|| 2.94|| 3.40|| 3.80|| 4.16|| 4.50|| 4.81|| 5.10|| 5.38
|}
===Small Dual Purpose & AA Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}} Flett
| 1.50|| 2.12|| 2.59|| 3.00|| 3.35|| 3.67|| 3.96|| 4.24|| 4.50|| 4.74
|-
!{{LOS}}
| 1.25|| 1.76|| 2.16|| 2.50|| 2.79|| 3.06|| 3.30|| 3.53|| 3.75|| 3.95
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Large AA Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}} Flett
| 1.50|| 2.12|| 2.59|| 3.00|| 3.35|| 3.67|| 3.96|| 4.24|| 4.50|| 4.74
|-
!{{LOS}}
| 1.40|| 1.97|| 2.42|| 2.80|| 3.13|| 3.42|| 3.70|| 3.95|| 4.20|| 4.42
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Depth Charges===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{DepthCharge}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.75|| 1.06|| 1.29|| 1.50|| 1.67|| 1.83|| 1.98|| 2.12|| 2.25|| 2.37
|-
!{{ASW}}
| 0.67|| 0.94|| 1.15|| 1.33|| 1.49|| 1.63|| 1.76|| 1.89|| 2.00|| 2.11
|}
===Sonars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sonar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.75|| 1.06|| 1.29|| 1.50|| 1.67|| 1.83|| 1.98|| 2.12|| 2.25|| 2.37
|-
!{{ASW}}
| 0.67|| 0.94|| 1.15|| 1.33|| 1.49|| 1.63|| 1.76|| 1.89|| 2.00|| 2.11
|-
!{{Hit}}
| 1.30|| 1.83|| 2.25|| 2.60|| 2.90|| 3.18|| 3.43|| 3.67|| 3.90|| 4.11
|}
===AP Shells===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedAmmo}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===AA Shells===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{GreenAmmo}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Anti-Ground Rockets===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{AntiGroundArtillery}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Surface Ship Personnel===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{SurfaceShipPersonnel}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Searchlights===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Searchlight}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!Enemy CI rate
| -?%|| -?%|| -?%|| -?%|| -?%|| -?%|| -?%|| -?%|| -?%|| -?%
|}
===Aviation Personnels===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Aviation Personnel}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}<ref>[[Combat/Night Battle#Carrier Night Attacks|Carrier Night Air Attacks]] only.</ref>
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|}<references/>
===Amphibious Tanks===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Amphibious Tank}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
![[Anti-Installation]] Bonus
| 0.03%|| 0.06%|| 0.09%|| 0.12%|| 0.15%|| 0.18%|| 0.21%|| 0.24%|| 0.27%|| 0.30%
|-
![[Expedition]] Bonus
| 0.01%|| 0.02%|| 0.03%|| 0.04%|| 0.05%|| 0.06%|| 0.07%|| 0.08%|| 0.09%|| 0.10%
|}
===Transport Landing Craft===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Landing Craft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
![[Anti-Installation]] Bonus
| 0.02%|| 0.04%|| 0.06%|| 0.08%|| 0.10%|| 0.12%|| 0.14%|| 0.16%|| 0.18%|| 0.20%
|-
![[Expedition]] Bonus
| 0.05%|| 0.10%|| 0.15%|| 0.20%|| 0.25%|| 0.30%|| 0.35%|| 0.40%|| 0.45%|| 0.50%
|}
===Daihatsu-class Landing Craft (Type 89 Medium Tanks & Marines)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Landing Craft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
![[Anti-Installation]] Bonus
| 0.02%|| 0.04%|| 0.06%|| 0.08%|| 0.10%|| 0.12%|| 0.14%|| 0.16%|| 0.18%|| 0.20%
|-
![[Expedition]] Bonus
| 0.02%|| 0.04%|| 0.06%|| 0.08%|| 0.10%|| 0.12%|| 0.14%|| 0.16%|| 0.18%|| 0.20%
|}
===Landing Craft===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Landing Craft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
![[Anti-Installation]] Bonus
| 0.02%|| 0.04%|| 0.06%|| 0.08%|| 0.10%|| 0.12%|| 0.14%|| 0.16%|| 0.18%|| 0.20%
|}
===Submarine Torpedoes===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sub Torpedo}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Fighters===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{GreenPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Seaplane Fighters===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{SeaplaneFighter}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Land-Based Fighters 1===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Interceptor Fighter}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Land-Based Fighters 2===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Interceptor Fighter2}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Fighter-Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.25|| 0.50|| 0.75|| 1.00|| 1.25|| 1.50|| 1.75|| 2.00|| 2.25|| 2.50
|}
===Dive Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Dive}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{ASW}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Torpedo Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{BluePlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{ASW}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Rotorcraft (Basic)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Autogyro}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{ASW}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Rotorcraft (Advanced)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Autogyro}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{ASW}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|}
===Medium Extra Armors===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Medium Armor}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Armor}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Large Extra Armors===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Armor}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Armor}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|}
*Note that those categories do not perfectly match in-game equipment categories (eg. Dive Bombers & Fighter-Bombers).
The improvement effects are unknown for:
* {{Land-Based Recon}} [[:Category:Land-based Reconnaissance Aircraft|Land-Based Recons]].
* {{SubmarineRadar}} [[:Category:Submarine Equipment|Submarine Equipment]].
* {{CommandFacility}} {{EquipmentLink|Fleet Command Facility|Striking Force Fleet Command Facility|Elite Torpedo Squadron Command Facility|link_category=Command Facilities|text=Command Facilities}}.
* {{Rations}} {{EquipmentLink|Combat Ration|Combat Ration (Special Onigiri)|Canned Saury|text=Rations|link_category=Combat Rations}}.
===(Very) Large guns===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedGunHeavy}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.50|| 2.12|| 2.59|| 3.00|| 2.35|| 3.67|| 3.96|| 4.24|| 4.50|| 4.74
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Medium (Red) guns===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedGunMedium}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Small (Red) guns===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedGunLight}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green main 7- AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Main Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{AA}} Ship
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{AA}} Flett
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green main 8+ AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Main Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{AA}} Ship
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{AA}} Flett
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===90mm Single High-angle Gun Mount===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sec Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{AA}} Ship
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{AA}} Flett
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green sec 7- AA 4- FP===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sec Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{NBPower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{AA}} Ship
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{AA}} Flett
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green sec 8+ AA 4- FP ===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sec Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{NBPower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{AA}} Ship
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{AA}} Flett
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===HA Green sec 8+ AA 5+ FP sec===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Sec Green}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|-
!{{NBPower}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|-
!{{AA}} Ship
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{AA}} Flett
| 3.00|| 4.24|| 5.19|| 6.00|| 6.70|| 7.34|| 7.93|| 8.48|| 9.00|| 9.48
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Yellow sec 4- FP===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{YellowGun}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{NBPower}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Yellow sec 5+ FP===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{YellowGun}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|-
!{{NBPower}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===15.2cm Single Gun Mount & OTO 152mm Triple Rapid Fire Gun Mount===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{YellowGun}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===AAFD 7- AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{AntiAircraftFireDirector}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{AA}} Ship
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{AA}} Flett
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===AA Guns 7- AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{GreenGunMG}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Torpedo}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|-
!{{AA}} Ship
| 4.00|| 5.66|| 6.93|| 8.00|| 8.94|| 9.80|| 10.58|| 11.31|| 12.00|| 12.65
|-
!{{Hit}} Torpedo
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|}
===AA Guns 8+ AA===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{GreenGunMG}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Torpedo}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|-
!{{AA}} Ship
| 6.00|| 8.49|| 10.39|| 12.00|| 13.42|| 14.70|| 15.87|| 16.97|| 18.00|| 18.97
|-
!{{Hit}} Torpedo
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|}
===Torpedoes===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{TorpedoWeapon}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}} Torpedo
| 2.00|| 2.82|| 3.46|| 4.00|| 4.47|| 4.89|| 5.29|| 5.65|| 6.00|| 6.32
|}
===Minisubs===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Minisub}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===(Large) Carrier Recons===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{YellowPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|}
===Large Flying Boats===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Flying Boat}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|}
===Seaplane Recons===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{SPR}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|}
===Seaplane Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{SPB}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Dive}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{LOS}}
| 1.2|| 1.69|| 2.07|| 2.40|| 2.68|| 2.93|| 3.17|| 3.39|| 3.60|| 3.79
|}
===Liaison Aircraft===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{ASWPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{ASW}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Attackers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Land-based Attack Aircraft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|-
!{{AA}}
| 0.50|| 0.70|| 0.86|| 1.00|| 1.11|| 1.22|| 1.32|| 1.41|| 1.50|| 1.58
|}
===Assault Aircraft===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Land-based Assault Aircraft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|-
!{{AA}}
| 0.50|| 0.70|| 0.86|| 1.00|| 1.11|| 1.22|| 1.32|| 1.41|| 1.50|| 1.58
|}
===Heavy Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Land-based Aircraft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|-
!{{AA}}
| 0.50|| 0.70|| 0.86|| 1.00|| 1.11|| 1.22|| 1.32|| 1.41|| 1.50|| 1.58
|}
===Ginga & Type 1 Land-based Attack Aircraft (Nonaka Squadron)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Land-based Attack Aircraft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|-
!{{AA}}
| 0.25|| 0.50|| 0.75|| 1.00|| 1.25|| 1.50|| 1.75|| 2.00|| 2.25|| 2.50
|}
===Bomb-carrying Type 1 Fighter Hayabusa Model III Kai (65th Squadron)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{IconText|{{Interceptor Fighter2}}|bomber}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.50|| 0.70|| 0.86|| 1.00|| 1.11|| 1.22|| 1.32|| 1.41|| 1.50|| 1.58
|}
===Large Surface Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.40|| 1.97|| 2.42|| 2.80|| 3.13|| 3.42|| 3.70|| 3.95|| 4.20|| 4.42
|-
!{{Hit}}
| 1.70|| 2.40|| 2.94|| 3.40|| 3.80|| 4.16|| 4.50|| 4.81|| 5.10|| 5.38
|}
===Small Surface Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Small Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{LOS}}
| 1.25|| 1.76|| 2.16|| 2.50|| 2.79|| 3.06|| 3.30|| 3.53|| 3.75|| 3.95
|-
!{{Hit}}
| 1.70|| 2.40|| 2.94|| 3.40|| 3.80|| 4.16|| 4.50|| 4.81|| 5.10|| 5.38
|}
===(Very) Large Dual Purpose Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}} Flett
| 1.50|| 2.12|| 2.59|| 3.00|| 3.35|| 3.67|| 3.96|| 4.24|| 4.50|| 4.74
|-
!{{LOS}}
| 1.40|| 1.97|| 2.42|| 2.80|| 3.13|| 3.42|| 3.70|| 3.95|| 4.20|| 4.42
|-
!{{Hit}}
| 1.70|| 2.40|| 2.94|| 3.40|| 3.80|| 4.16|| 4.50|| 4.81|| 5.10|| 5.38
|}
===Small Dual Purpose & AA Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}} Flett
| 1.50|| 2.12|| 2.59|| 3.00|| 3.35|| 3.67|| 3.96|| 4.24|| 4.50|| 4.74
|-
!{{LOS}}
| 1.25|| 1.76|| 2.16|| 2.50|| 2.79|| 3.06|| 3.30|| 3.53|| 3.75|| 3.95
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Large AA Radars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Radar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}} Flett
| 1.50|| 2.12|| 2.59|| 3.00|| 3.35|| 3.67|| 3.96|| 4.24|| 4.50|| 4.74
|-
!{{LOS}}
| 1.40|| 1.97|| 2.42|| 2.80|| 3.13|| 3.42|| 3.70|| 3.95|| 4.20|| 4.42
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Depth Charges===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{DepthCharge}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.75|| 1.06|| 1.29|| 1.50|| 1.67|| 1.83|| 1.98|| 2.12|| 2.25|| 2.37
|-
!{{ASW}}
| 0.67|| 0.94|| 1.15|| 1.33|| 1.49|| 1.63|| 1.76|| 1.89|| 2.00|| 2.11
|}
===Sonars===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sonar}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 0.75|| 1.06|| 1.29|| 1.50|| 1.67|| 1.83|| 1.98|| 2.12|| 2.25|| 2.37
|-
!{{ASW}}
| 0.67|| 0.94|| 1.15|| 1.33|| 1.49|| 1.63|| 1.76|| 1.89|| 2.00|| 2.11
|-
!{{Hit}}
| 1.30|| 1.83|| 2.25|| 2.60|| 2.90|| 3.18|| 3.43|| 3.67|| 3.90|| 4.11
|}
===AP Shells===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedAmmo}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{Hit}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===AA Shells===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{GreenAmmo}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Anti-Ground Rockets===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{AntiGroundArtillery}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Surface Ship Personnel===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{SurfaceShipPersonnel}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|}
===Searchlights===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Searchlight}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!Enemy CI rate
| -?%|| -?%|| -?%|| -?%|| -?%|| -?%|| -?%|| -?%|| -?%|| -?%
|}
===Aviation Personnels===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Aviation Personnel}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}<ref>[[Combat/Night Battle#Carrier Night Attacks|Carrier Night Air Attacks]] only.</ref>
| 0.70|| 0.98|| 1.21|| 1.40|| 1.56|| 1.71|| 1.85|| 1.97|| 2.10|| 2.21
|}<references/>
===Amphibious Tanks===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Amphibious Tank}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
![[Anti-Installation]] Bonus
| 0.03%|| 0.06%|| 0.09%|| 0.12%|| 0.15%|| 0.18%|| 0.21%|| 0.24%|| 0.27%|| 0.30%
|-
![[Expedition]] Bonus
| 0.01%|| 0.02%|| 0.03%|| 0.04%|| 0.05%|| 0.06%|| 0.07%|| 0.08%|| 0.09%|| 0.10%
|}
===Transport Landing Craft===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Landing Craft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
![[Anti-Installation]] Bonus
| 0.02%|| 0.04%|| 0.06%|| 0.08%|| 0.10%|| 0.12%|| 0.14%|| 0.16%|| 0.18%|| 0.20%
|-
![[Expedition]] Bonus
| 0.05%|| 0.10%|| 0.15%|| 0.20%|| 0.25%|| 0.30%|| 0.35%|| 0.40%|| 0.45%|| 0.50%
|}
===Daihatsu-class Landing Craft (Type 89 Medium Tanks & Marines)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Landing Craft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
![[Anti-Installation]] Bonus
| 0.02%|| 0.04%|| 0.06%|| 0.08%|| 0.10%|| 0.12%|| 0.14%|| 0.16%|| 0.18%|| 0.20%
|-
![[Expedition]] Bonus
| 0.02%|| 0.04%|| 0.06%|| 0.08%|| 0.10%|| 0.12%|| 0.14%|| 0.16%|| 0.18%|| 0.20%
|}
===Landing Craft===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Landing Craft}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Firepower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
!{{NBPower}}
| 1.00|| 1.41|| 1.73|| 2.00|| 2.23|| 2.44|| 2.64|| 2.82|| 3.00|| 3.16
|-
![[Anti-Installation]] Bonus
| 0.02%|| 0.04%|| 0.06%|| 0.08%|| 0.10%|| 0.12%|| 0.14%|| 0.16%|| 0.18%|| 0.20%
|}
===Submarine Torpedoes===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Sub Torpedo}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Fighters===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{GreenPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Seaplane Fighters===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{SeaplaneFighter}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Land-Based Fighters 1===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Interceptor Fighter}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Land-Based Fighters 2===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Interceptor Fighter2}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Fighter-Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{AA}}
| 0.25|| 0.50|| 0.75|| 1.00|| 1.25|| 1.50|| 1.75|| 2.00|| 2.25|| 2.50
|}
===Dive Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{RedPlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Dive}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{ASW}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Torpedo Bombers===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{BluePlane}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Torpedo}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|-
!{{ASW}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Rotorcraft (Basic)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Autogyro}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{ASW}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Rotorcraft (Advanced)===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Autogyro}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{ASW}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|}
===Medium Extra Armors===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Medium Armor}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Armor}}
| 0.2|| 0.4|| 0.6|| 0.8|| 1.0|| 1.2|| 1.4|| 1.6|| 1.8|| 2.0
|}
===Large Extra Armors===
{|class="wikitable" style="text-align:center"
!colspan=11|Improvement {{Star}} effects
|-
!{{Large Armor}}
!1★!!2★!!3★!!4★!!5★!!6★!!7★!!8★!!9★!!Max★
|-
!{{Armor}}
| 0.3|| 0.6|| 0.9|| 1.2|| 1.5|| 1.8|| 2.1|| 2.4|| 2.7|| 3.0
|}