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Akashi's Improvement Arsenal

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Improvement is made accessible by having Akashi or Akashi Kai as your secretary.

Equipment can be improved here and sometimes upgraded into new, better equipment. Different equipment can be improved based on the day of the week and which ship you have in the second slot of your first fleet.

How to Enter

Kaishu koushou.png
  1. Set Akashi or Akashi Kai as your secretary (first ship of the first fleet).
  2. At the home screen, hover your cursor over the factory icon).
  3. The Improvement Arsenal icon will slide out from beneath it as shown.
  4. Move your cursor to that icon and click.


How to Use

  • Improvement materials Item Icon Improvement Material.png are the primary component for improvement. They can be obtained through the following means:
  1. Specific quests
  2. 4 improvement materials in exchange for a medal.
  3. The in-game cash shop, which sells them in packages of 10 for 700 DMM points.
  4. Event map clearance rewards and first-class medals, the latter of which yields 10.
  • The 2nd ship in your first fleet determines which upgrades are available.
  • Improvements can fail.
    • Your chance of failure rises with equipment improvement ranking.
    • Your success rate is higher when using a remodeled Akashi.
    • On failure, components used will disappear; however, the equipment being upgraded remains unchanged.
    • There is a slider that guaranteed success in exchange for an increase in required development and improvement materials.
  • Equipment that has been improved will have a ★. Improvement ranks range from ★+1 to ★+10. ★+10 appears as ★max.
  • All improvement attempts from ★+6 onward use up equipment (most of the time this is the same as the equipment being upgraded). This requirement is present on some equipment even from ★+0.
    • Locked and previously improved equipment cannot be used as improvement fodder.
    • As equipment is spent even on failure, you are recommended to use the success slider when improvements consume rare equipment.
  • There is no visible stat difference between improved and unimproved equipment.
    • Improvements on equipment have been shown to increase firepower, torpedo and ASW depending on the category of the equipment. They are also speculated to contribute to base attack power.
    • Preliminary results as of May 31, 2015 are:
      • 12.7cm Twin Gun Mount (firepower), 25mm Triple Autocannon (torpedo), Type 94 Depth Charge (ASW), etc:
        • ★+1~3: +1 bonus to firepower/torpedo/ASW
        • ★+4~8: +2 bonus to firepower/torpedo/ASW
        • ★+9~10: +3 bonus to firepower/torpedo/ASW
      • 35.6cm Twin Gun Mount, 41cm Twin Gun Mount, etc:
        • ★+1: +1 bonus to firepower
        • ★+2~4: +2 bonus to firepower
        • ★+5~7: +3 bonus to firepower
        • ★+8~10: +4 bonus to firepower
      • 61cm Quad (Oxygen) Torpedo, 61cm Quint (Oxygen) Torpedo, etc
        • ★+1~2: +1 bonus to torpedo
        • ★+3~6: +2 bonus to torpedo
        • ★+7~10: +3 bonus to torpedo
      • Type 94 Depth Charge, Type 3 SONAR, etc
        • ★+2~7: +1 bonus to non-ASW firepower
        • ★+8~10: +2 bonus to non-ASW firepower
      • Depth charges, sonars, fire directors, and searchlights increase shelling damage (Type 91 FD ★+10 shown to increase effective firepower by 3). Torpedoes and autocannons do not.
  • Autocannons improvements increases the damage for torpedo salvo. (Example: 25mm Triple Autocannon Mount ★+9 shown to increase effective torpedo by 3)
  • The damage increase is speculated to be the same formula as the 61cm Quad (Oxygen) Torpedo Mount.
  • The effective increase is speculated to be [math]\displaystyle{ \text {Effective Bonus} = \text {Equipment Type Modifier} \times \sqrt {\text {★ value}} }[/math]. Equipment Type Modifier is listed in the collapsed table (as it depends on situation).
  • Example 1: 12.6cm Twin Gun Mount ★+6 (2.449) and ★+7 (2.645) provides a total of +5 effective bonus.
  • Example 2: 35.6cm Twin Gun Mount ★+6 (3.674) and ★+5 (3.354) provides a total of +7 effective bonus.
  • ASW equipment bonus are applied not to the equipment bonus nor the base ASW value, but instead for damage calculation.
  • The bonus is not applied to support shelling fire.
Bonus Details
Equipment Type Damage the Bonus Applies to Equipment Type Modifier
Small Caliber Gun
Medium Caliber Gun
Secondary Gun
Shelling x1
AP Shell x1
(Note: ★+5 shown to give +2 bonus, but +3 bonus not confirmed yet)
Fire Director
Searchlight
x1
Large Caliber Gun (Daytime) x1.5
Large Caliber Gun (Nighttime) x1
Torpedo (Daytime) Torpedo x1.2
Torpedo (Nighttime) x1
Autocannon x1
Sonar
Depth Charge
Shelling x0.75
ASW x1
  • If the equipment reaches the maximum improvement level (★max), it can sometimes be upgraded into stronger equipment. Be aware that the equipment's improvement level will reset, and a ★+10 equipment could be stronger than its unimproved upgrade.
    • If the new equipment after upgrading is something you can develop from conventional development, the improvement level will be automatically set to ★+3 (or ★+5 in a few cases).
    • This has a higher chance of failure than normal improvement.

Success Rate for Improvements

Akashi's success rate with each improvement is based mainly on whether or not she is kai or not. If she has not at Kai, her success rate is lower in comparison to her when she's Kai. As of current, Akashi's level may not have any additional influence on her success rate. So for all admirals who manage to get a hold of Akashi it is recommended to train her to Kai at the very least to maximize her benefits when modifying equipment.

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%

Possible Improvements

Equipment that can be improved depends on the day of the week and the ship in the second slot of the first fleet. Changes at 0:00 JST.

When the 2nd Ship varies by day, the ship's initial is used; '✓' denotes that any ship listed may be used.

A ship named can do the improvement regardless of remodel level unless specified.

Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
High-Angle Gun 10cm Twin High-angle Mount +
Anti-Aircraft Fire Director
0 10 60 150 50 6/7 3/4 - T A A A T T Akizuki
Teruzuki
Uses 10cm Twin High-angle Mounts for improvement past ★+6.
6 5/8 4/7 2*
10 - - -
Small Caliber Main Gun 12.7cm Twin Gun Mount 0 10 30 60 0 1/2 1/2 - -
6 1/2 1/2 1
10 2/3 3/6 2
12.7cm Twin Mount Type-B Kai 2 0 10 60 100 0 2/2 2/3 - X X X X Yuudachi Kai Ni
Ayanami Kai Ni
6 2/2 2/4 1
10 - - -
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Medium Caliber Main Gun 14cm Naval Gun 0 10 50 80 0 1/2 1/2 - -
6 1/2 1/2 1
10 3/4 3/6 2
14cm Twin Gun Mount 0 10 60 100 0 2/2 1/2 - X X X X X Yuubari
6 2/4 2/3 1
10 - - -
15.2cm Twin Gun Mount 0 10 70 100 0 2/2 2/3 - N N
Y
Y Y A
Y
A
N
A
N
Agano
Noshiro
Yahagi
Uses a Type 22 Surface RADAR for upgrading.
6 2/3 2/4 1
10 5/8 4/10 1*
15.2cm Twin Gun Mount Kai 0 20 80 100 30 3/4 2/3 1* S S S Y Y Y Sakawa
Yahagi
Uses 15.2cm Twin Gun Mounts for improvement.
6 4/6 3/6 1*
10 - - -
15.5cm Triple Gun Mount (Main) 0 10 90 120 0 2/2 2/3 0 O O X X X M M Mogami
Ooyodo
6 2/3 2/4 1
10 - - -
20.3cm Twin Gun Mount 0 10 90 120 0 1/2 2/3 - K K K Aoba
Kinugasa
6 2/3 2/3 1
10 2/5 4/10 2
20.3cm(no.2) Twin Gun Mount 0 10 100 130 0 2/3 2/3 - X X X X Myoukou
6 2/4 2/4 1
10 4/8 4/11 2
20.3cm(no.3) Twin Gun Mount 0 10 110 140 0 3/4 2/3 - X X X X X Mikuma
6 3/5 3/5 1
10 - - -
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Large Caliber Main Gun 35.6cm Twin Gun Mount 0 20 240 300 0 2/3 1/2 - X X X X Fusou
6 3/4 2/4 1
10 6/12 5/12 3
35.6cm Twin Gun Mount (Dazzle Camouflage) 0 30 250 300 30 3/4 2/3 1* X X Haruna Kai Ni Uses 35.6cm Twin Gun Mounts for improvement.
6 4/5 3/5 2*
10 ? ? ?
Prototype 35.6cm Triple Gun Mount 0 30 330 390 30 4/6 3/4 2* Y X X F
K
F
Y
H
F
Y
Fusou Kai Ni
Yamashiro Kai Ni
Kongou Kai Ni
Haruna Kai Ni
Uses 35.6cm Twin Gun Mounts for improvement.
6 6/9 4/7 3*
10 - - -
38cm Twin Gun Mount 0 20 380 450 20 4/5 2/3 1* X X X X Bismarck Uses 35.6cm Twin Gun Mounts for improvement.
Uses 41cm Twin Gun Mounts for upgrading.
6 5/8 3/5 2*
10 10/20 6/13 2*
38cm Twin Gun Mount Kai 0 30 390 470 30 5/7 3/4 1* X X X X Bismarck Uses 41cm Twin Gun Mounts for improvement.
6 6/9 4/6 2*
10 - - -
381mm / 50 Triple Gun Mount 0 30 400 480 20 4/5 2/3 1* R R L L L L R Littorio/Italia
Roma
Uses 35.6cm Twin Gun Mounts for improvement.
Uses 25mm Twin Autocannon Mounts for upgrading.
6 5/8 3/5 2*
10 12/20 7/14 2*
381mm / 50 Triple Gun Mount Kai 0 40 440 500 50 4/7 3/4 1* L L R R R R L Littorio/Italia
Roma
Uses 41cm Twin Gun Mounts for improvement.
6 7/10 4/6 2*
10 - - -
41cm Twin Gun Mount 0 30 350 480 0 3/4 2/3 1 M M N X M N N Nagato
Mutsu
6 4/7 3/6 2
10 - - -
Prototype 41cm Triple Gun Mount 0 40 440 620 40 5/7 4/6 2* N N M M N M M Mutsu Kai
Nagato Kai
Uses 41cm Twin Gun Mounts for improvement.
6 8/10 5/8 3*
10 - - -
Prototype 46cm Twin Gun Mount 0 40 420 650 40 5/6 3/5 2* Y Y M M X X X Yamato
Musashi
Uses 41cm Twin Gun Mounts for improvement and when upgrading.
6 6/8 4/7 3*
10 12/18 8/14 4*
46cm Triple Gun Mount 0 50 480 800 50 6/8 4/6 1 M M X X X Y Y Musashi
Yamato
6 8/10 5/8 2
10 - - -
Prototype 51cm Twin Cannon 0 50 550 950 80 7/9 5/7 2* X Y M X X X Yamato Kai
Musashi Kai
Uses 46cm Triple Gun Mounts for improvement.
6 10/15 7/10 3*
10 - - -
16in Triple Gun Mount Mk.7 0 45 450 750 100 10/15 6/8 3* Iowa Uses 41cm Twin Gun Mounts for improvement up to ★+6.
Uses 46cm Triple Gun Mounts for improvement past ★+6.
Uses Type 32 Surface RADARs for upgrading.
6 16/28 8/20 3**
10 16/28 8/20 2**
16in Triple Gun Mount Mk.7 + GFCS 0 45 500 770 500 16/24 8/12 2* X X X Iowa Uses Type 22 Surface RADARs for improvement up to ★+6.
Uses Type 32 Surface RADARs for improvement past ★+6.
6 16/24 8/16 2**
10 - - -
38.1cm Mk.I Twin Gun Mount 0 45 500 770 500 3/4 3/4 2* X X X Warspite Uses 35.6cm Twin Gun Mounts for improvement up to ★+6.
Uses 41cm Twin Gun Mounts for improvement past ★+6.
6 4/6 3/5 2**
10 - - -
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates different equipment is required. Sun Mon Tue Wed Thu Fri Sat
High-Angle Gun 90mm Single High Angled Gun 0 10 20 70 10 1/2 1/2 1* R L L L R R Littorio/Italia
Roma
Uses 10cm Twin High-angle Mounts for improvement.
6 2/3 1/2 2*
10 - - -
Secondary Gun OTO 152mm triple extended machine gun 0 10 90 120 0 2/3 2/3 - R L L R R L Littorio/Italia
Roma
Uses 15.5cm Triple Gun Mounts (Main) for improvement past ★+6.
6 3/4 3/5 1*
10 - - -
15.2cm Naval Gun 0 10 60 90 0 2/2 1/2 - A
K
A
Y
Y X X K Agano
Kongou
Yamashiro
6 2/3 2/3 1
10 3/4 3/5 2
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Armor-Piercing Shell Type 91 AP Shell 0 30 150 310 10 2/3 1/1 - K K X H H Hiei
Kirishima
6 3/5 1/2 1
10 6/9 4/9 3
Type 1 AP Shell 0 30 170 330 20 3/5 1/1 2* K H H H X K K Kongou
Haruna
Uses Type 91 AP Shells for improvement up to ★+6.
Uses itself for improvement past ★+6.
6 4/6 2/4 1
10 - - -
Anti-Aircraft Gun 25mm Single Autocannon Mount 0 0 10 10 10 0/1 1/1 - S X X F F Satsuki
Fumizuki
6 1/2 1/1 1
10 2/3 1/2 1
25mm Twin Autocannon Mount 0 0 20 10 10 0/1 1/1 - I S S X X X I Isuzu Kai Ni
Satsuki
6 1/2 1/2 1
10 2/3 1/2 1
25mm Triple Autocannon Mount 0 0 30 20 10 1/2 1/1 - M+ I
M+
I
M
I
M
M M+ M+ Isuzu Kai Ni
Maya
Maya Kai Ni (M+)
Only Isuzu Kai Ni and Maya Kai Ni can upgrade into 25mm Triple Autocannon Mount (Concentrated Deployment).
6 1/3 1/2 1
10 5/9 3/7 5
Anti-Aircraft Fire Director Type 91 Anti-Aircraft Fire Director 0 0 0 60 40 3/4 1/2 - X X T Akizuki
Maya
Teruzuki
Uses 12.7cm Twin High-angle Mounts for improvement past ★+6.
Uses 10cm Twin High-angle Mounts for upgrading.
6 3/5 2/4 1*
10 4/9 4/7 2*
Type 94 Anti-Aircraft Fire Director 0 0 0 80 70 4/5 2/3 - A
T
A
T
A
T
Akizuki
Fubuki Kai Ni
Teruzuki
Hatsuzuki
Uses 10cm Twin High-angle Mounts for improvement.
Upgrades into 10cm Twin High-angle Mount + Anti-Aircraft Fire Director.
6 3/5 3/5 1*
10 8/10 5/10 2*
0 4/5 2/3 - X X X Maya Kai Ni Uses 12.7cm Twin High-angle Mounts for improvement.
Upgrades into 12.7cm Twin High-angle Mount + Anti-Aircraft Fire Director.
6 3/5 3/5 1*
10 7/9 5/9 2*
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Torpedoes 61cm Triple Torpedo Mount 0 50 70 60 20 1/2 1/1 - M M M X F F F Fubuki*
Murakumo
Excluding Fubuki Kai Ni (improves 61cm Triple (Oxygen) Torpedo Mount instead, see below).
6 2/3 1/2 1
10 3/5 2/4 2
61cm Triple (Oxygen) Torpedo Mount 0 60 90 60 20 1/2 1/1 - X X X X Fubuki Kai Ni Uses 61cm Triple Torpedo Mounts for improvement past ★+6.
Uses 61cm Quad Torpedo Mounts for upgrading.
6 3/5 1/3 1*
10 4/8 3/6 2*
61cm Quad Torpedo Mount 0 70 100 70 20 1/2 1/2 - X X -
6 2/3 1/2 1
10 3/5 3/6 2
61cm Quad (Oxygen) Torpedo Mount 0 80 120 80 20 2/3 1/2 - Ooi
Kitakami
6 4/8 2/4 1
10 5/10 5/11 3
61cm Quint (Oxygen) Torpedo Mount 0 100 150 90 30 3/4 3/5 - X X X X X Shimakaze
6 5/9 3/7 1
10 - - -
Prototype 61cm Hext (Oxygen) Torpedo Mount 0 100 150 90 30 6/8 5/6 2* S X X H H H Shimakaze
Hatsuzuki
Uses 2 61cm Quad (Oxygen) Torpedo Mount for improvement up to ★+6.
Uses 1 61cm Quint (Oxygen) Torpedo Mount for improvement past ★+6.
6 9/12 6/12 1*
10 - - -
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
SONAR Type 93 SONAR 0 10 0 30 30 2/2 1/2 - Y I X X X Y Y Isuzu Kai Ni
Yuubari
Upgrades into Type 3 SONAR ★+3.
6 3/4 2/3 1
10 6/9 3/5 2
0 10 0 30 30 2/2 1/2 - K
S
X X X I
S
K
S
Isuzu Kai Ni
Katori Kai
Shigure Kai Ni
Uses Type 3 SONAR for upgrading.
Upgrades into Type 4 SONAR.
6 3/4 2/3 1
10 10/20 6/12 2*
Type 3 SONAR 0 10 0 30 50 4/5 2/3 - I X X X X Isuzu Kai Ni
Yuubari
6 5/7 3/5 1
10 - - -
Type 4 SONAR 0 10 0 50 60 5/7 3/5 2* A K K T I I I Akizuki
Isuzu Kai Ni
Katori Kai
Teruzuki
Uses Type 93 SONAR for improvement up to ★+6.
6 6/10 4/6 1
10 - - -
Depth Charges Type 94 Depth Charge 0 10 60 20 20 1/2 1/2 - X X X X X -
6 2/3 1/3 1
10 3/6 3/8 2
Type 3 Depth Charge 0 10 80 20 30 3/3 2/3 - X X X X X Isuzu Kai Ni
6 3/5 2/4 1
10 - - -
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Searchlight Searchlight 0 10 0 30 20 3/3 2/3 - J Ao
Ay
Ao
Ay
Ao
Ay
Ak Ak
J
Ak
J
Akatsuki
Aoba
Ayanami
Jintsuu
Uses Skilled Lookouts for upgrading into Type 96 150cm Searchlights.
6 3/5 2/4 1
10 5/10 3/7 1*
Type 96 150cm Searchlight 0 20 0 70 30 4/5 3/4 1* H H K K K H Hiei
Kirishima
Uses Searchlights for improvement.
6 5/? 3/? 1*
10 - - -
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
RADAR Type 13 Air RADAR 0 10 0 20 30 4/5 2/3 - I
S
I
T
A
T
A
T
A
S
I
S
I
S
Akizuki
Isuzu Kai Ni
Shigure Kai Ni
Teruzuki
Consumes a Type 21 Air RADAR for upgrading.
6 5/7 3/5 1
10 10/15 5/12 1*
Type 13 Air RADAR Kai 0 10 0 30 40 5/7 3/4 1* H
Y
Y Y Y I H
I
H
I
Hatsushimo Kai Ni
Isokaze Kai
Yukikaze
Uses Type 13 Air Radars for improvement.
6 7/9 4/8 2*
10 - - -
Type 21 Air RADAR 0 10 0 40 50 5/6 2/3 - I I X H H Hyuuga
Ise
6 6/8 3/5 1
10 12/16 5/13 2
Type 21 Air RADAR Kai 0 10 0 60 70 6/8 2/3 1* Y X M M Y Musashi
Yamato
Uses Type 21 Air Radars for improvement.
6 10/12 4/8 2*
10 - - -
Type 22 Surface RADAR 0 10 0 30 30 4/5 2/3 1 H H
Y
Y S S Hyuuga
Shimakaze
Yuugumo
6 7/10 3/5 2
10 10/20 8/14 3
Type 22 Surface RADAR Kai 4 0 10 0 40 40 5/8 3/4 1* H
M
H K K K
M
H
M
Haguro Kai Ni
Kongou Kai Ni
Myoukou Kai Ni
Uses Type 22 Surface Radars for improvement up to ★+6.
6 8/10 4/8 1
10 - - -
Type 32 Surface RADAR 0 10 0 60 50 6/10 3/4 1* H H H I I I I Hyuuga
Ise
Uses Type 22 Surface RADARs for improvement up to ★+6
Consumes itself for upgrading.
6 12/15 4/7 2*
10 15/22 10/15 1
Type 32 Surface RADAR Kai 0 10 0 100 80 10/15 5/6 3* I I I H H H H Hyuuga
Ise
Uses Type 22 Surface RADARs for improvement up to ★+6
Uses Type 32 Surface RADARs for improvement past ★+6
6 14/18 7/10 1**
10 - - -
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Fighter Type 96 Fighter 0 70 50 0 170 1/3 1/2 1* Houshou Uses Type 96 Fighter for improvement up to ★+6
Uses 7.7mm Machine Gun for improvement past ★+6
Uses 2 Type 96 Fighter for upgrade.
6 2/4 1/3 1*
10 3/6 2/4 2*
Zero Fighter Type 21 0 100 80 0 250 2/4 2/3 1* K K K X A A A Akagi
Kaga
Uses Zero Fighter Type 21 for improvement up to ★+6
Uses 2 Zero Fighter Type 21s for improvement past ★+6
Uses 2 7.7mm Machine Guns for upgrade.
6 3/5 2/4 2*
10 4/7 3/5 2*
Zero Fighter Type 21 (Skilled) 0 100 80 0 250 2/4 2/3 2* K K K X A A A Akagi
Kaga
Uses 2Zero Fighter Type 21s for improvement up to ★+6
Uses 3 Zero Fighter Type 21s for improvement past ★+6
Uses 3 7.7mm Machine Guns for upgrade.
6 3/5 2/4 3*
10 4/7 3/5 3*
Zero Fighter Type 32 0 90 100 0 260 3/5 2/3 1* A A X K K X X Akagi
Kaga
Uses Zero Fighter Type 21 for improvement up to ★+6
Uses 2 Zero Fighter Type 21s for improvement past ★+6
6 4/6 3/4 2*
10 ? ? ?
Zero Fighter Type 32 (Skilled) 0 90 100 0 260 3/5 2/3 2* A A X K K X X Akagi
Kaga
Uses 2Zero Fighter Type 21s for improvement up to ★+6
Uses 3 Zero Fighter Type 21s for improvement past ★+6
Uses 3 7.7mm Machine Guns for upgrade.
6 4/6 3/5 3*
10 - - -
Zero Fighter Type 52 0 120 120 0 280 3/5 3/4 1 Z Z X Z S S S Shoukaku
Zuikaku
Uses Zero Fighter Type 52s for improvement up to ★+6
Uses 2 Zero Fighter Type 52s for improvement past ★+6
6 5/8 3/5 2
10 - - -
Zero Fighter Type 52 (Skilled) 0 120 120 0 280 4/6 3/5 2* Z Z X Z S S S Shoukaku
Zuikaku
Uses 2 Zero Fighter Type 52s for improvement up to ★+6.
Uses 3 Zero Fighter Type 52s for improvement past ★+6.
6 5/8 3/5 3*
10 - - -
Zero Fighter Type 52 Model C (601 Air Group) 0 120 120 0 280 4/6 3/5 2* T T T T
U
T
U
T
U
T
U
Taihou
Unryuu
Uses 2 Zero Fighter Type 52s for improvement up to ★+6.
Uses 2 Tenzans for improvement past ★+6.
6 ? ? 2*
10 - - -
Zero Fighter Type 52 Model A (Iwamoto Squadron) 0 120 120 0 280 4/6 3/5 2* X X X X X Z Z Zuikaku Uses 2 Zero Fighter Type 52s for improvement up to ★+6.
6 ? ? ?
10 - - -
Zero Fighter Type 52 Model C (Iwai Squadron) 0 ?? ?? ?? ?? ? 4/? 3/? X X Z X Z X X Zuikaku
6 ? ? ?
10 - - -
Zero Fighter Type 53 (Iwamoto Squadron) 0 120 120 0 280 4/6 3/5 2* X X X X X Z Z Zuikaku Uses 2 Zero Fighter Type 52s for improvement up to ★+6.
Uses 3 Zero Fighter Type 52s for improvement past ★+6
6 5/9 4/6 3*
10 - - -
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Dive Bomber Zero Fighter Type 62 (Fighter-bomber) 0 120 120 0 280 4/6 3/5 2* J
S
S X X X J J Junyou
Shoukaku
Uses 2 Zero Fighter Type 52s for improvement up to ★+6
6 ? ? ?
10 - - -
Zero Fighter Type 62 (Fighter-bomber/Iwai Squadron) 0 120 120 0 280 4/6 3/5 2* X X Z X Z X X Zuikaku Uses 2 Zero Fighter Type 52s for improvement up to ★+6.
Uses 2 Suiseis for improvement past ★+6.
6 5/9 4/6 2*
10 - - -
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Seaplane Type 0 Recon Seaplane 0 90 20 0 300 4/6 2/3 1 A
M
M M Chiy A
Chiy
A
Chit
M
A
Chit
M
Akitsushima Kai
Chitose A
Chiyoda A
Mizuho
Uses 2 Zero Fighter Type 21s for improvement past ★+6.
Uses 3 Zero Fighter Type 21s to upgrade to Type 2 Seaplane Fighter Kai.
6 5/8 3/5 2*
10 9/15 5/10 3*
Type 0 Observation Seaplane 0 90 40 0 270 4/6 3/5 1* Mi Mi Mi Mi Mu Mu Mizuho
Musashi
Uses Zuiuns for improvement up to ★+6.
Uses Type 0 Observation Seaplanes for improvement past ★+6.
6 6/9 4/7 1**
10 - - -
Ro.43 Recon Seaplane 0 60 30 0 180 3/? 1/? 1* I Z Z
R
Z
R
Z Z I Roma Kai
Zara Kai
Italia
Uses Type 0 Recon Seaplane for improvement up to ★+6 and upgrading to Ro.44 Seaplane Fighter.
Uses Zuiun for improvement past ★+6.
6 4/? 2/? 1**
10 5/10 3/5 2*
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Landing Craft Daihatsu-class Landing Craft 0 50 30 30 10 1/2 1/2 1* Ak
S
Ab
Ak
S
Ab
Ak
S
Ak
S
Ak Ak
Ab
Ak
Ab
Akitsumaru
Satsuki Kai Ni
Abukuma Kai Ni
Uses Drum Canister for improvement up to ★+6 and uses 7.7mm Machine Gun for improvement past ★+6

Uses 12.7mm Machine Gun to upgrade to Daihatsu-class Landing Craft (Type 89 Medium Tanks & Marines)

6 1/4 2/3 1*
10 4/8 3/7 3*
Daihatsu-class Landing Craft (Type 89 Medium Tanks & Marines) 0 70 80 120 30 3/5 2/3 1* Ak Ak Ab Ab S
Ab
Ak
S
Ak
S
Akitsumaru
Satsuki Kai Ni
Abukuma Kai Ni
Uses 25mm Autocannon for improvement up to ★+6 and uses 12cm 30-tube Rocket Launcher for improvement past ★+6

Uses 7.7mm Machine Gun to upgrade to Type 2 Ka-Mi Tank

6 4/8 3/5 2*
10 10/18 5/9 3*
Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Amphibious Vehicle Type 2 Ka-Mi Tank 0 80 90 100 70 5/8 3/4 2* 58 58

401

401 8

401

8

401

58

8

58

8

I-58
I-8
I-401
Uses 7.7mm Machine Gun for improvement up to ★+6

Uses 12.7mm Machine Gun for improvement past ★+6

6 8/12 4/6 3*
10 - - -

Possible Upgrades

Type Starting Equipment Upgraded Equipment
Small Caliber Main Gun / High-Angle Gun Light Gun 12.7cm Twin Gun Mount 12.7cm Twin Mount Type-B Kai 2
12.7cm Twin Mount Type-B Kai 2 Impossible to upgrade
10cm Twin High-angle Mount + Anti-Aircraft Fire Director Impossible to upgrade
Medium Caliber Main Gun Medium Gun 14cm Naval Gun 14cm Twin Gun Mount
14cm Twin Gun Mount Impossible to upgrade
15.2cm Twin Gun Mount 15.2cm Twin Gun Mount Kai
15.2cm Twin Gun Mount Kai Impossible to upgrade
15.5cm Triple Gun Mount (Main) Impossible to upgrade
20.3cm Twin Gun Mount 20.3cm(no.2) Twin Gun Mount
20.3cm(no.2) Twin Gun Mount 20.3cm(no.3) Twin Gun Mount
20.3cm(no.3) Twin Gun Mount Impossible to upgrade
Large Caliber Main Gun Heavy Gun 35.6cm Twin Gun Mount Prototype 35.6cm Triple Gun Mount
35.6cm Twin Gun Mount (Dazzle Camouflage) Impossible to upgrade
Prototype 35.6cm Triple Gun Mount Impossible to upgrade
38cm Twin Gun Mount 38cm Twin Gun Mount Kai ★+3
38cm Twin Gun Mount Kai Impossible to upgrade
381mm / 50 Triple Gun Mount 381mm / 50 Triple Gun Mount Kai ★+3
381mm / 50 Triple Gun Mount Kai Impossible to upgrade
41cm Twin Gun Mount Impossible to upgrade
Prototype 41cm Triple Gun Mount Impossible to upgrade
46cm Twin Gun Mount Prototype 46cm Triple Gun Mount ★+5
46cm Triple Gun Mount Impossible to upgrade
Prototype 51cm Twin Cannon Impossible to upgrade
16in Triple Gun Mount Mk.7 16in Triple Gun Mount Mk.7 + GFCS
16in Triple Gun Mount Mk.7 + GFCS Impossible to upgrade
38.1cm Mk.I Twin Gun Mount Impossible to upgrade
High-Angle Gun / Secondary Gun Auxiliary Gun 90mm Single High Angled Gun Impossible to upgrade
OTO 152mm triple extended machine gun Impossible to upgrade
15.2cm Naval Gun 15.2cm Twin Gun Mount
Armor-Piercing Shell AP Shell Type 91 Armor-Piercing (AP) Shell Type 1 Armor-Piercing (AP) Shell
Type 1 Armor-Piercing (AP) Shell Impossible to upgrade
Anti-Aircraft Gun Anti-Air Gun 25mm Single Autocannon Mount 25mm Twin Autocannon Mount ★+5
25mm Twin Autocannon Mount 25mm Triple Autocannon Mount ★+3
25mm Triple Autocannon Mount* 25mm Triple Autocannon Mount (Concentrated Deployment)
Anti-Aircraft Fire Director Anti-Aircraft Fire Director Type 91 Anti-Aircraft Fire Director Type 94 Anti-Aircraft Fire Director
Type 94 Anti-Aircraft Fire Director* 10cm Twin High-angle Mount + Anti-Aircraft Fire Director
12.7cm Twin High-angle Mount + Anti-Aircraft Fire Director
TorpedoesTorpedo 61cm Triple Torpedo Mount 61cm Triple O2 Torpedo Mount
61cm Triple O2 Torpedo Mount 61cm Quad O2 Torpedo Mount ★+5
61cm Quad Torpedo Mount 61cm Quad O2 Torpedo Mount ★+3
61cm Quad O2 Torpedo Mount 61cm Quint O2 Torpedo Mount
61cm Quint O2 Torpedo Mount Impossible to upgrade
Prototype 61cm Sextuple O2 Torpedo Mount Impossible to upgrade
SONARSonar Type 93 SONAR Type 3 SONAR ★+3
Type 4 SONAR
Type 3 SONAR Impossible to upgrade
Type 4 SONAR Impossible to upgrade
Depth ChargesDepthCharge Type 94 Depth Charge Type 3 Depth Charge ★+3
Type 3 Depth Charge Impossible to upgrade
SearchlightSearchlights Searchlight Type 96 150cm Searchlight
Type 96 150cm Searchlight Impossible to upgrade
RADARRadars Type 13 Air RADAR Type 13 Air RADAR Kai
Type 13 Air RADAR Kai Impossible to upgrade
Type 21 Air RADAR Type 21 Air RADAR Kai
Type 21 Air RADAR Kai Impossible to upgrade
Type 22 Surface RADAR Type 22 Surface RADAR Kai 4
Type 22 Surface RADAR Kai 4 Impossible to upgrade
Type 32 Surface RADAR Type 32 Surface RADAR Kai
Type 32 Surface RADAR Kai Impossible to upgrade
SeaplaneSeaplane Type 0 Recon Seaplane Type 2 Seaplane Fighter Kai
Type 0 Observation Seaplane Impossible to upgrade
Ro.43 Recon Seaplane Ro.44 Seaplane Fighter
Landing CraftLanding Craft Daihatsu-class Landing Craft Daihatsu-class Landing Craft (Type 89 Medium Tanks & Marines)
Daihatsu-class Landing Craft (Type 89 Medium Tanks & Marines) Type 2 Ka-Mi Tank
FighterFighters Type 96 Fighter Zero Fighter Type 21 ★+3
Zero Fighter Type 21 Zero Fighter Type 32 ★+3
Zero Fighter Type 32 Zero Fighter Type 52 ★+3
Zero Fighter Type 52 Impossible to upgrade
Zero Fighter Type 21 (Skilled) Zero Fighter Type 32 (Skilled) ★+3
Can also be upgraded directly to Zero Fighter Type 52 (Skilled) via a monthly quest.
Any improvements (★) will be carried over to the new model after the quest is completed.

Improvement Material (Quest Rewards)

Quest Type Quest ID Quest Name (JP) Description Item Icon Improvement Material.png Note
Once A45 改修工廠を準備せよ! Have Akashi as flagship in your main fleet. 5
F17 はじめての「装備改修」! Do equipment modernization 1 time 7 Consumes Item Icon Improvement Material.png.
A44 「西村艦隊」を再編成せよ! Organize the Nishimura Fleet 3
A49 「第二二駆逐隊」を編成せよ! Compose the 22nd DesDiv 3
A64 「新編成航空戦隊」を編成せよ! Have 2 (BBV and/or CAV), 2 DDs, and 2 CV(L)s in your fleet. 2
B33 「西村艦隊」南方海域へ進出せよ! Deploy the Nishimura Fleet to 5-1 and obtain an S-victory at the boss node. 5
B38 「那智戦隊」抜錨せよ! Deploy the Nachi Squadron to 2-2 and obtain an S-victory at the boss node. 2
B41 新編「三川艦隊」ソロモン方面へ! Deploy the Mikawa Fleet to 5-1 and obtain an S-victory at the boss node. 3
B44 海上突入部隊、進発せよ! Deploy the Maritime Assault Fleet to 5-1 and obtain an S-victory at the boss node. 2
B45 「第六駆逐隊」対潜哨戒を徹底なのです! Deploy the 6th DesDiv to 1-5 and obtain an A-victory or higher at the boss node. 2
B47 「第一水雷戦隊」北方ケ号作戦、再突入! Deploy the First Torpedo Squadron to 3-2 and obtain an S-victory at the boss node. 4
B49 「空母機動部隊」北方海域に進出せよ! Deploy the Mobile Carrier Fleet to 3-5 and obtain an S-victory at the boss node. 3
B56 新編成航空戦隊、北方へ進出せよ! Deploy the New Carrier Division to 3-3 and obtain an S-victory at the boss node. 2
B57 「礼号作戦」実施せよ! Deploy the Surface Counterattack Fleet to 2-5 and obtain an S-victory at the boss node. 3
B59 旗艦「霞」出撃!敵艦隊を撃滅せよ! Sortie Kasumi Kai Ni (Kai Ni Type B is also acceptable) as flagship along with 2 other DDs and 3 other ships to 2-5 and obtain an S-victory at the boss node. 3
B60 「第三十一戦隊」出撃せよ! Sortie Isuzu Kai Ni, Satsuki Kai Ni, Uzuki Kai and up to 3 additional ships to 1-6 and reach the end node. 3
Daily F18 装備の改修強化 Do equipment modernization 1 time (failure OK) 1 Consumes Item Icon Improvement Material.png; net gain impossible.
Weekly Bw5 海上護衛戦 Sink 15 submarines. 1
Bw7 敵北方艦隊主力を撃滅せよ! Defeat 5 bosses in the Northern Sea (3-3, 3-4, or 3-5). 3
Bw9 南方海域珊瑚諸島沖の制空権を握れ! 2 S-rank victories at the boss node of 5-2. 2
Bw10 海上輸送路の安全確保に努めよ! 3 A-rank or better victories at boss node of 1-5. 3
C4 大規模演習 Get 20 victories in Exercises (PvP) within the same week. 1
D11 南方への鼠輸送を継続実施せよ! Complete Expedition 37 or 38 a total of 7 times in a week. 1
Monthly Bm3 「水雷戦隊」南西へ! S-rank victory at boss node of 1-4 with a fleet consisting of 1~3 CLs (1 of which is flagship) and rest DDs. 3
Bm4 「水上打撃部隊」南方へ! S-rank victory at boss node of 5-1 with a fleet consisting of 3 slow BB, 1 CL, and up to 2 other ships. 4 BBV counts as slow BB for this.
Bm5 海上護衛強化月間 10 A-rank or better victories at boss node of 1-5. 3
Bm6 「空母機動部隊」西へ! S-rank victory at boss node of 4-2 with a fleet consisting of 2 CV, 2 DD, and up to 2 other ships. 2
Bm7 「水上反撃部隊」突入せよ! S-rank victory at boss node of 2-5 with 4 DD (1 of which is flagship), 1 CL, and 1 CA. 2

See Also


zh:明石的改修工厂