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Akashi's Improvement Arsenal
This gameplay mechanic 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
- Set Akashi or Akashi Kai as your secretary (first ship of the first fleet).
- At the home screen, hover your cursor over the factory icon (do not click).
- The Improvement Arsenal icon will appear next to it as shown.
- Move your cursor to that icon and click.
How to Use
- To use this new factory, you need improvement materials
. They can be obtained through the following methods:
- Certain quests reward Improvement Materials.
- Medals can be exchanged for 4 Improvement Materials per medal.
- The in-game cash shop sells them in a package of 10 Improvement Materials for 700 DMM points.
- The 2nd ship of the fleet can aid Akashi and influence the possible upgrade options.
- There is a chance to fail when doing improvements and upgrades
- If the improvement level is low, then you will have a higher chance of success, and vice versa.
- Akashi Kai has a higher success rate than Akashi herself.
- On failure, resources, Development Materials, Improvement Materials and any extra equipment used will disappear. Equipment being upgraded is left unchanged.
- There is a slider for guaranteed success that increases the required DevMats and ImproveMats.
- Equipment that has been improved will have a ★ beside them. Improvement ranges from ★+1 to ★+10. ★+10 appears as ★max.
- All improvement attempts from ★+6 onward also use up other equipments (most of the time it is the same equipment). Some equipments will have this requirement even from ★+0.
- Equipment to be spent must be unlocked and unimproved.
- Some equipments do not use up unimproved copies of itself (an example would be . As of May 4, 2015, all equipments that have this behavior cannot be developed.
- As equipment is spent even on failure, using the guaranteed success slider for difficult to obtain equipment may be considered.
- There's no visible stat difference between unimproved and improved equipment.
- Improvements on equipment have been shown to have bonus to shelling, torpedo and anti-submarine damage, depending on the category of the equipment.
- Japanese sources are currently testing the effect of improvements. Preliminary results as of 2014/12/10 are:
- 12.7cm Twin Gun Mount and similar (not specified in wikiwiki)
- ★+1~3: +1 bonus to firepower/torpedo
- ★+4~8: +2 bonus to firepower/torpedo
- ★+9~10: +3 bonus to firepower/torpedo
- 35.6cm Twin Gun Mount:
- ★+1: +1 bonus to firepower
- ★+2~4: +2 bonus to firepower
- ★+5~7: +3 bonus to firepower
- ★+8~10: +4 bonus to firepower
- Depth charges and sonars are reported to boost firepower and ASW.
- 12.7cm Twin Gun Mount and similar (not specified in wikiwiki)
- If the equipment reaches the maximum improvement level (★max), it may be possible to upgrade to a stronger variant. Any lock on the equipment must be removed, and an upgrade must exist for this to be possible. Be aware that the improvement level will be reset if you do this, and a ★+10 equipment could be stronger than an unimproved upgrade.
- If the new equipment after upgrading is something you can develop from conventional development, the improvement level will be automatically reset to ★+3 (or ★+5 in a few cases).
- This has the highest chance of failure, so using the guaranteed success slider can be considered.
- Equipment to be upgraded must not be locked.
- Note that certain equipments cannot be equipped by the same ships when upgraded. For example, upgrading Type 94 Anti-Aircraft Fire Director (usable by all surface ships) into either 10cm Twin High-angle Mount + Anti-Aircraft Fire Director (small caliber main gun) or 12.7cm Twin High-angle Mount + Anti-Aircraft Fire Director (secondary gun) will reduce the number of ships who can equip it.
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 either may be used.
Type | Name | ★ | Resource | Day | 2nd Ship | ||||||||||||
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Sun | Mon | Tue | Wed | Thu | Fri | Sat | ||||
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10cm Twin High-angle Mount + Anti-Aircraft Fire Director |
0 | 10 | 60 | 150 | 50 | 6/7 | 3/4 | - | X | ✓ | ✓ | ✓ | ✓ | X | X | Akizuki |
6 | 5/8 | 4/7 | 2* | ||||||||||||||
10 | - | - | - | ||||||||||||||
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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-2 Ayanami Kai-2 | |
6 | 2/2 | 2/4 | 1 | ||||||||||||||
10 | - | - | - | ||||||||||||||
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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 | - | - | - | ||||||||||||||
15.5cm Triple Gun Mount (Main) | 0 | 10 | 90 | 120 | 0 | 2/2 | 2/3 | 0 | O | O | X | X | X | M | M | ||
6 | 2/3 | 2/4 | 1 | ||||||||||||||
10 | - | - | - | ||||||||||||||
20.3cm Twin Gun Mount | 0 | 10 | 90 | 120 | 0 | 1/2 | 2/3 | - | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | 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 | ||||||||||||
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Sun | Mon | Tue | Wed | Thu | Fri | Sat | ||||
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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 | ||||||||||||||
38cm Twin Gun Mount | 0 | 20 | 380 | 450 | 20 | 4/5 | 2/3 | 1* | X | X | X | X | ✓ | ✓ | ✓ | Bismarck | |
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 | |
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 | |
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 Roma | |
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 46cm Twin Gun Mount | 0 | 40 | 420 | 650 | 40 | 5/6 | 3/5 | 2* | Y | Y | M | M | X | X | X | Yamato Musashi | |
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 | - | - | - | ||||||||||||||
Type | Name | ★ | Resource | Day | 2nd Ship | ||||||||||||
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Sun | Mon | Tue | Wed | Thu | Fri | Sat | ||||
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90mm Single High Angled Gun | 0 | 10 | 20 | 70 | 10 | 1/2 | 1/2 | 1* | R | L | L | L | ✓ | R | R | Littorio) Roma |
6 | 2/3 | 1/2 | 2* | ||||||||||||||
10 | - | - | - | ||||||||||||||
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OTO 152mm triple extended machine gun | 0 | 10 | 90 | 120 | 2/3 | 2/3 | - | ✓ | R | L | L | R | R | L | Littorio Roma | |
6 | 3/? | 3/? | 1* | ||||||||||||||
10 | - | - | - | ||||||||||||||
Type | Name | ★ | Resource | Day | 2nd Ship | ||||||||||||
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Sun | Mon | Tue | Wed | Thu | Fri | Sat | ||||
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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 | |
6 | 4/6 | 2/4 | 1 | ||||||||||||||
10 | - | - | - | ||||||||||||||
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25mm Twin Autocannon Mount | 0 | 0 | 20 | 10 | 10 | 0/1 | 1/1 | - | ✓ | X | X | X | X | ✓ | ✓ | Isuzu Kai-2 |
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 | - | X | I | ✓ | ✓ | M | X | X | Isuzu Kai-2 Maya | |
6 | 1/3 | 1/2 | 1 | ||||||||||||||
10 | 5/9 | 3/7 | 5 | ||||||||||||||
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Type 91 Anti-Aircraft Fire Director | 0 | 0 | 0 | 60 | 40 | 3/4 | 1/2 | - | ✓ | ✓ | X | X | X | ✓ | ✓ | Maya Akizuki |
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 | A | A | ✓ | ✓ | ✓ | Akizuki Fubuki Kai-2 (upgrades to 10cm+FD) | |
6 | 3/5 | 3/5 | 1* | ||||||||||||||
10 | 8/10 | 5/10 | 2* | ||||||||||||||
0 | 4/5 | 2/3 | - | ✓ | X | X | X | ✓ | ✓ | ✓ | Maya Kai-2
(upgrades to 12.7cm+FD) | ||||||
6 | 3/5 | 3/5 | 1* | ||||||||||||||
10 | 7/9 | 5/9 | 2* | ||||||||||||||
Type | Name | ★ | Resource | Day | 2nd Ship | ||||||||||||
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Sun | Mon | Tue | Wed | Thu | Fri | Sat | ||||
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61cm Triple Torpedo Mount | 0 | 50 | 70 | 60 | 20 | 1/2 | 1/1 | - | M | M | M | X | F | F | F | Fubuki * Murakumo |
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-2 | |
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 | - | - | - | ||||||||||||||
Type | Name | ★ | Resource | Day | 2nd Ship | ||||||||||||
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Sun | Mon | Tue | Wed | Thu | Fri | Sat | ||||
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Type 93 SONAR | 0 | 10 | 0 | 30 | 30 | 2/2 | 1/2 | - | Y | I | X | X | X | ✓ | ✓ | Isuzu Kai-2 Yuubari |
6 | 3/4 | 2/3 | 1 | ||||||||||||||
10 | 6/9 | 3/5 | 2 | ||||||||||||||
Type 3 SONAR | 0 | 10 | 0 | 30 | 50 | 4/5 | 2/3 | - | I | X | ✓ | ✓ | X | X | X | Isuzu Kai-2 Yuubari | |
6 | 5/7 | 3/5 | 1 | ||||||||||||||
10 | - | - | - | ||||||||||||||
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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-2 | |
6 | 3/5 | 2/4 | 1 | ||||||||||||||
10 | - | - | - |
Note
- Type 91 Anti-Aircraft Fire Director use 12.7cm Twin High-angle Mount for improvement past ★+6 and use 10cm Twin High-angle Mount for upgrading.
- Type 94 Anti-Aircraft Fire Director use 10cm Twin High-angle Mount(Akizuki and Fubuki Kai-2) or 12.7cm Twin High-angle Mount(Maya) for improvement. For upgrading: with Akizuki or Fubuki Kai-2 consumes 10cm Twin High-angle Mount to make 10cm Twin High-angle Mount + Anti-Aircraft Fire Director; with Maya Kai-2 consumes 12.7cm Twin High-angle Mount to make 12.7cm Twin High-angle Mount + Anti-Aircraft Fire Director
- 10cm Twin High-angle Mount + Anti-Aircraft Fire Director use 10cm Twin High-angle Mount for improvement past ★+6.
- 61cm Triple Torpedo Mount requires Fubuki or Fubuki Kai as 2nd ship, Fubuki Kai-2 not valid.
- 61cm Triple (Oxygen) Torpedo Mount use 61cm Triple Torpedo Mount for improvement past ★+6 and use 61cm Quad Torpedo Mount for upgrading.
- Type 1 AP Shell use Type 91 AP Shell for improvement before ★+6. Consumes itself past ★+6.
- 38cm Twin Gun Mount use 35.6cm Twin Gun Mount for improvement and use 41cm Twin Gun Mount for upgrading.
- 38cm Twin Gun Mount Kai use 41cm Twin Gun Mount for improvement.
- Prototype 46cm Twin Gun Mount use 41cm Twin Gun Mount for improvement and upgrading.
- 381mm / 50 Triple Gun Mount use 35.6cm Twin Gun Mount for improvement and 25mm Twin Autocannon Mount for upgrading.
- 381mm / 50 Triple Gun Mount kai use 41cm Twin Gun Mount for improvement.
- 90mm Single High Angled Gun use 10cm Twin High-angle Mount for improvement.
- OTO 152mm triple extended machine gun use 15.5cm Triple Gun Mount (Main) for improvement past ★+6.
Possible Upgrades
*The Type 94 Anti-Aircraft Fire Director upgrades to the 10cm Twin High-angle Mount + Anti-Aircraft Fire Director with Akizuki and Fubuki Kai-2 or the 12.7cm Twin High-angle Mount + Anti-Aircraft Fire Director with Maya Kai-2.
*Upgrading 25mm Triple Autocannon Mount to 25mm Triple Autocannon Mount (Concentrated Deployment) requires Maya Kai-2 as 2nd ship. Maya and Maya Kai won't work.
Improvement Material (Quest Rewards)
Quest Type | Quest ID | Quest Name (JP) | Description | ![]() |
Note |
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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 ![]() | |
A44 | 「西村艦隊」を再編成せよ! | Organize the Nishimura Fleet | 3 | ||
B33 | 「西村艦隊」南方海域へ進出せよ! | Deploy the Nishimura Fleet to 5-1 and obtain S-victory at boss node | 5 | ||
Daily | F18 | 装備の改修強化 | Do equipment modernization 1 time (failure OK) | 1 | Consumes ![]() |
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! | Sortie to 5-2 and get S-rank at the boss node 2 times. | 2 | ||
Bw10 | 海上輸送路の安全確保に努めよ! | Sortie to 1-5 and get at least A-rank at the boss node 3 times. | 3 | ||
C4 | 大規模演習 | Get 20 victories in practice mode 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! | Deploy a Torpedo Squadron to 1-4 and win S-victory at boss node. | 3 | |
Bm4 | 「水上打撃部隊」南方へ! | Deploy a Battleship Squadron to 5-1 and win S-victory at boss node. | 4 | ||
Bm5 | 海上護衛強化月間 | Dispatch a fleet to 1-5. You must reach the boss and achieve A-rank victory or above 10 times | 3 | ||
Bm6 | 「空母機動部隊」西へ! | Dispatch a fleet consisting of 2 CV, 2 DD and additional 2 ships to 4-2. You must reach the boss an achieve S-rank Victory. | 2 | ||
Bm7 | 「水上反撃部隊」突入せよ! | Consists of 1 CA 1 CL 4 DD. You MUST deploy to World 2-5, and obtain an S-Rank victory at the boss node. Flagship MUST be DD. | 2 |
Trivia
- Akashi is animated on the Improvement Arsenal screen, blinking her eyes and occasionally looking towards the options on the left.
- She also has two separate sprites for her basic and Kai forms, reflecting her headband and heftier rigging.