Akashi's Improvement Arsenal

This system is made for Akashi and Akashi Kai. Now if you have her as your secretary ship, you will be able to use Akashi's Improvement Arsenal.

By using Improvement Material, development material and resources, equipment can be improved and upgraded into a better equipment. Equipment that can be improved depends on the day of the week and the ship in the second slot.

How to Enter

Set Akashi or Akashi Kai as your secretary (first ship of the first fleet).
At the home screen, hover your mouse 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.
- Present Box or Hishimochi obtainable during special occasion can be exchanged for 1 Improvement Material each together with a few Development Material.
- 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.
Starting from ★+6. you will have to spend a certain amount of equipment that have the same type (name) in order to gain ★+7 up to ★+10.
- Equipment to be spent must be unlocked and unimproved.
- Some equipment require different equipment. 41cm Twin Gun Mount requires spending equipment starting on the first improvement.
- 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 firepower, torpedo, accuracy and anti-submarine damage.
- Japanese sources are currently testing the effect of improvements. Preliminary results as of 2015/1/13 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 Charge:
    - ★+1~2: +2 bonus to anti-submarine damage
    - ★+3~6: +3 bonus to anti-submarine damage
  - Effect on the AA Guns and AA Directors is unknown as of 2014/11/17
  - Depth Charges, Sonars, and AA Directors have an additional firepower bonus when upgraded:
    - ★+1~3: +1 bonus to firepower
    - ★+4~8: +2 bonus to firepower
    - ★+9~10: +3 bonus to firepower
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 the conventional development, the improvement level will be automatically reset to ★+3.
- This has the highest chance of failure, so using the guaranteed success slider can be considered.
- Equipment to be upgraded must not be locked.

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; 'O' usually denotes that either may be used.

Light Guns

Type	Name	★	Resource					Day							2nd Ship	Upgrades to
Type	Name	★						S	M	T	W	T	F	S	2nd Ship	Upgrades to
	12.7cm Twin Gun	0	1/2	1/2	-	10	60	O	O	O	O	O	O	O	Any	12.7cm Twin Gun Type-B Kai 2
		6	1/2	1/2	1	10	60
		6	1/2	1/2	1	30	0
		10	2/3	3/6	2	30	0
	12.7cm Twin Gun Type-B Kai 2	0	2/2	2/3	-	10	100	X	O	O	O	X	X	X	Yuudachi Kai-2 Ayanami Kai-2	None
		6	2/2	2/4	1	10	100
		6	2/2	2/4	1	60	0
		10	-	-	-	60	0
	10cm Twin High-angle Mount + Anti-Aircraft Fire Director	0	6/7	3/4	-	10	150	X	O	O	O	O	X	X	Akizuki	None
		6	5/8	4/7	2*	10	150
		6	5/8	4/7	2*	60	50
		10	-	-	-	60	50

Medium Guns

Type	Name	★	Resource					Day							2nd Ship	Upgrades to
Type	Name	★						S	M	T	W	T	F	S	2nd Ship	Upgrades to
	14cm Single Gun	0	1/2	1/2	-	10	80	O	O	O	O	O	O	O	Any	14cm Twin Gun
		6	1/2	1/2	1	10	80
		6	1/2	1/2	1	50	0
		10	3/4	3/6	2	50	0
	14cm Twin Gun	0	2/2	1/2	-	10	100	X	O	X	X	O	X	X	Yuubari	None
		6	2/4	2/3	1	10	100
		6	2/4	2/3	1	60	0
		10	-	-	-	60	0
	15.2cm Twin Gun Mount	0	2	2/3	-	10	70						O		Agano Noshiro	15.2cm Twin Gun Mount Kai +?
		6	?	?	?	10	70
		6	?	?	?	100	0
		10	?	?	?	100	0
	15.2cm Twin Gun Mount Kai	0	3/4	2/3	1*	20	80						O		Yahagi	??
		6	?	?	?	20	80
		6	?	?	?	100	30
		10	?	?	?	100	30
	15.5cm Triple Gun (Main)	0	2/2	2/3	0	10	120	O	O	X	X	X	M	M	Mogami (Fri,Sat) Ooyodo (Sun,Mon)	None
		6	2/3	2/4	1	10	120
		6	2/3	2/4	1	90	0
		10	-	-	-	90	0
	20.3cm Twin Gun	0	1/2	2/3	-	10	120	O	O	O	O	O	O	O	Aoba Kinugasa	20.3cm(no.2) Twin Gun
		6	2/3	2/3	1	10	120
		6	2/3	2/3	1	90	0
		10	2/5	4/10	2	90	0
	20.3cm(no.2) Twin Gun	0	2/3	2/3	-	10	130	O	O	O	X	X	X	X	Myoukou	20.3cm(no.3) Twin Gun
		6	2/4	2/4	1	10	130
		6	2/4	2/4	1	100	0
		10	4/8	4/11	2	100	0
	20.3cm(no.3) Twin Gun	0	3/4	2/3	-	10	140	X	X	O	O	X	X	X	Mikuma	None
		6	3/5	3/5	1	10	140
		6	3/5	3/5	1	110	0
		10	-	-	-	110	0

Heavy Guns

Type	Name	★	Resource					Day							2nd Ship	Upgrades to
Type	Name	★						S	M	T	W	T	F	S	2nd Ship	Upgrades to
	35.6cm Twin Gun	0	2/3	1/2	-	20	300	O	X	X	X	X	O	O	Fusou	Prototype 35.6cm Triple Gun
		6	3/4	2/4	1	20	300
		6	3/4	2/4	1	240	0
		10	6/12	5/12	3	240	0
	38cm Twin Gun	0	4/5	2/3	1*	20	450	X	X	X	X	O	O	O	Bismarck	38cm Twin Gun Kai ★+3
		6	5/8	3/5	2*	20	450
		6	5/8	3/5	2*	380	20
		10	10/20	6/13	2*	380	20
	38cm Twin Gun Kai	0	5/7	3/4	1*	30	470	O	O	O	X	X	X	X	Bismarck	None
		6	6/9	4/6	2*	30	470
		6	6/9	4/6	2*	390	30
		10	-	-	-	390	30
	381mm/50 Triple Gun	0	4/5	2/3	1*	30	480	R	R	L	L	L	L	R	Littorio (Tu,We,Th,Fr) Roma (Sa,Su,Mo)	381mm/50 Triple Gun Kai ★+3
		6	5/8	3/5	2*	30	480
		6	5/8	3/5	2*	400	20
		10	12/20	7/14	2*	400	20
	381mm/50 Triple Gun Kai	0	5/7	3/4	1*	40	500	L	L	R	R	R	R	L	Littorio (Sa,Su,Mo) Roma (Tu,We,Th,Fr)	None
		6	7/10	4/6	2*	40	500
		6	7/10	4/6	2*	440	40
		10	-	-	-	440	40
	41cm Twin Gun	0	3/4	2/3	1	30	480	M	M	N	X	M	N	N	Nagato (Tue,Fri,Sat) Mutsu (Sun,Mon,Thu)	None
		6	4/7	3/6	2	30	480
		6	4/7	3/6	2	350	0
		10	-	-	-	350	0
	Prototype 46cm Twin Gun	0	5/6	3/5	2*	40	650	Y	Y	M	M	X	X	X	Yamato (Sun,Mon) Musashi (Tue,Wed)	46cm Triple Gun ★+5
		6	6/8	4/7	3*	40	650
		6	6/8	4/7	3*	420	40
		10	12/18	8/14	4*	420	40
	46cm Triple Gun	0	6/8	4/6	1	50	800	M	M	X	X	X	Y	Y	Musashi (Sun,Mon) Yamato (Fri,Sat)	None
		6	8/10	5/8	2	50	800
		6	8/10	5/8	2	480	50
		10	-	-	-	480	50
	Prototype 51cm Twin Cannon	0	7/9	5/7	2*	50	950	X	O	Y	M	X	X	X	Musashi (Mon,Wed) Yamato (Mon,Tue)	None
		6	10/15	7/10	3*	50	950
		6	10/15	7/10	3*	550	80
		10	-	-	-	550	80

Secondary Guns

Type	Name	★	Resource					Day							2nd Ship	Upgrades to
Type	Name	★						S	M	T	W	T	F	S	2nd Ship	Upgrades to
	15.2cm Gun	0	2/2	1/2	-	10	90	A/K	O	A/Y	Y	X	X	K	Kongou (Su,Mo,Sa) Agano (Su,Mo,Tu) Yamashiro (Mo,Tu,We)	15.2cm Twin Gun
		6	2/3	2/3	1	10	90
		6	2/3	2/3	1	60	0
		10	3/4	3/5	2	60	0
	OTO 152mm Triple Rapid Fire Gun	0	2/3	2/3	-	10	120	O	R	L	L	R	R	L	Littorio (Tue,Wed,Sat) Roma (Mon,Thu,Fri)	None
		6	3/4	3/5	1*	10	120
		6	3/4	3/5	1*	90	0
		10	-	-	-	90	0
	90mm Single High-angle Gun	0	1/2	1/2	1*	10	70	R	L	L	O	R	R	R	Littorio (Mon,Wed,Thu) Roma (Wed,Thu,Fri,Sun)	??
		6	2/3	1/2	2*	10	70
		6	2/3	1/2	2*	20	10
		10	?	?	?	20	10

Shells+AA Equipment

Type	Name	★	Resource					Day							2nd Ship	Upgrades to
Type	Name	★						S	M	T	W	T	F	S	2nd Ship	Upgrades to
	Type 91 AP Shell	0	2/3	1/1	-	30	310	K	K	X	H	H	O	O	Hiei (Wed,Thu,Fri,Sat) Kirishima (Sun,Mon,Fri,Sat)	Type 1 AP Shell
		6	3/5	1/2	1	30	310
		6	3/5	1/2	1	150	10
		10	6/9	4/9	3	150	10
	Type 1 AP Shell	0	3/5	1/1	2*	30	330	K	H	H	H	X	K	K	Kongou (Sun,Fri,Sat) Haruna (Mon,Tue,Wed)	None
		6	4/6	2/4	1	30	330
		6	4/6	2/4	1	170	20
		10	-	-	-	170	20
	25mm Twin Autocannon	0	0/1	1/1	-	0	10	O	X	X	X	X	O	O	Isuzu Kai-2	25mm Triple Autocannon ★+3
		6	1/2	1/2	1	0	10
		6	1/2	1/2	1	20	10
		10	2/3	1/2	1	20	10
	25mm Triple Autocannon	0	1/2	1/1	-	0	20	M	O	O	O	M	M	M	Isuzu Kai-2 (Mon,Tue,Wed) Maya (Tue,Wed,Thu) Maya Kai-2 (Mon,Fri,Sat,Sun)	25mm Triple Autocannon (Concentrated Deployment)
		6	1/3	1/2	1	0	20
		6	1/3	1/2	1	30	10
		10	5/9	3/7	5	30	10
	Type 91 Anti-Aircraft Fire Director	0	3/4	1/2	-	0	60	O	O	X	X	X	O	O	Maya Akizuki	Type 94 Anti-Aircraft Fire Director
		6	3/5	2/4	1*	0	60
		6	3/5	2/4	1*	0	40
		10	4/9	4/7	2*	0	40
	Type 94 Anti-Aircraft Fire Director	0	4/5	2/3	-	0	80	O	A	A	A	O	O	O	Akizuki (All Days) Fubuki Kai-2 (Su,Th,Fr,Sa)	10cm Twin High-angle Gun + Anti-Aircraft Fire Director
		6	3/5	3/5	1*
		10	8/10	5/10	2*
		0	4/5	2/3	-	0	70	O	X	X	X	O	O	O	Maya Kai-2	12.7cm Twin High-angle Gun + Anti-Aircraft Fire Director
		6	3/5	3/5	1*
		10	7/9	5/9	2*

Torpedoes

Type	Name	★	Resource					Day							2nd Ship	Upgrades to
Type	Name	★						S	M	T	W	T	F	S	2nd Ship	Upgrades to
	61cm Triple Torpedo Mount	0	1/2	1/1	-	50	60	M	M	M	X	F	F	F	Fubuki Kai* (Thu,Fri,Sat) Murakumo (Sun,Mon,Tue)	61cm Triple (Oxygen) Torpedo Mount
		6	2/3	1/2	1	50	60
		6	2/3	1/2	1	70	20
		10	3/5	2/4	2	70	20
	61cm Triple (Oxygen) Torpedo Mount	0	1/2	1/1	-	60	60	X	X	X	X	O	O	O	Fubuki Kai-2	61cm Quad (Oxygen) Torpedo Mount ★+5
		6	3/5	1/3	1*	60	60
		6	3/5	1/3	1*	90	20
		10	4/8	3/6	2*	90	20
	61cm Quad Torpedo Mount	0	1/2	1/2	-	70	70	O	O	O	X	X	O	O	Any	61cm Quad (Oxygen) Torpedo Mount ★+3
		6	2/3	1/2	1	70	70
		6	2/3	1/2	1	100	20
		10	3/5	3/6	2	100	20
	61cm Quad (Oxygen) Torpedo Mount	0	2/3	1/2	-	80	80	O	O	O	O	O	O	O	Ooi Kitakami	61cm Quint (Oxygen) Torpedo Mount
		6	4/8	2/4	1	80	80
		6	4/8	2/4	1	120	20
		10	5/10	5/11	3	120	20
	61cm Quint (Oxygen) Torpedo Mount	0	3/4	3/5	-	100	90	X	X	X	O	O	X	X	Shimakaze	None
		6	5/9	3/7	1	100	90
		6	5/9	3/7	1	150	30
		10	-	-	-	150	30

ASW Equipment

Type	Name	★	Resource					Day							2nd Ship	Upgrades to
Type	Name	★						S	M	T	W	T	F	S	2nd Ship	Upgrades to
	Type 93 SONAR	0	2/2	1/2	-	10	30	Y	I	X	X	X	O	O	Isuzu Kai-2 (Mon,Fri,Sat) Yuubari (Sun,Fri,Sat)	Type 3 SONAR ★+3
		6	3/4	2/3	1	10	30
		6	3/4	2/3	1	0	30
		10	6/9	3/5	2	0	30
	Type 3 SONAR	0	4/5	2/3	-	10	30	I	X	O	O	X	X	X	Isuzu Kai-2 (Sun,Tue,Wed) Yuubari (Tue,Wed)	None
		6	5/7	3/5	1	10	30
		6	5/7	3/5	1	0	50
		10	-	-	-	0	50
	Type 94 Depth Charge	0	1/2	1/2	-	10	20	X	X	X	O	O	X	X	Any	Type 3 Depth Charge ★+3
		6	2/3	1/3	1	10	20
		6	2/3	1/3	1	60	20
		10	3/6	3/8	2	60	20
	Type 3 Depth Charge	0	3/3	2/3	-	10	20	X	X	X	O	O	X	X	Isuzu Kai-2	None
		6	3/5	2/4	1	10	20
		6	3/5	2/4	1	80	30
		10	-	-	-	80	30

Other Equipment

Type	Name	★	Resource					Day							2nd Ship	Upgrades to
Type	Name	★						S	M	T	W	T	F	S	2nd Ship	Upgrades to
	Searchlight	0	3/3	2/3	-	10	0						O		Jintsuu Akatsuki	??
		6	3/5	2/4	1	10	0
		6	3/5	2/4	1	30	20
		10	?/10	?/7	1*File:Equipment129-4.png	30	20
	Type 96 150cm Searchlight	0	4/?	3/?	?	20	70						O		Hiei Kirishima	None
		6	?	?	?	20	70
		6	?	?	?	0	30
		10	?	?	?	0	30

Note

10cm Twin High-angle Gun + Anti-Aircraft Fire Director use 10cm Twin High-angle Gun for improvement past ★+6.
38cm Twin Gun use 35.6cm Twin Gun for improvement and use 41cm Twin Gun for upgrading.
38cm Twin Gun Kai use 41cm Twin Gun for improvement.
381mm/50 Triple Gun Mount uses 35.6cm Twin Gun for improvement and 25mm Twin Autocannon for upgrading.
381mm/50 Triple Gun Mount Kai uses 41cm Twin Gun for improvement.
Prototype 46cm Twin Gun use 41cm Twin Gun for improvement and upgrading.
Prototype 51cm Twin Cannon uses 46cm Triple Gun Mount for improvement
90mm Single High-angle Gun uses 10cm Twin High-angle gun for improvement.
OTO 152mm Triple Rapid Fire Gun Mount uses 15.5cm Triple Gun (Main) for improvement
Type 1 AP Shell use Type 91 AP Shell for improvement before ★+6. Consumes itself past ★+6.
Type 91 Anti-Aircraft Fire Director use 12.7cm Twin High-angle Gun for improvement past ★+6 and use 10cm Twin High-angle Gun for upgrading.
Type 94 Anti-Aircraft Fire Director
- For Improvement consumes:
  - 10cm Twin High-angle Gun with Akizuki or Fubuki Kai-2
  - 12.7cm Twin High-angle Gun with Maya Kai-2
- For upgrading consumes:
  - 10cm Twin High-angle Gun to make 10cm Twin High-angle Gun + Anti-Aircraft Fire Director with Akizuki or Fubuki Kai-2
  - 12.7cm Twin High-angle Mount to make 12.7cm Twin High-angle Mount + Anti-Aircraft Fire Director with Maya Kai-2
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.
15.2cm Twin Gun Mount Kai use 15.2cm Twin Gun Mount for improvement.
Searchlight consumes itself for improvement past ★+6 and use Skilled Lookouts for upgrading.

Improvement Material (Quest Rewards)

Quest Type	Quest ID	Quest Name (JP)	Description		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
	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
	B38	「那智戦隊」抜錨せよ！	Deploy the Nachi Squadron to 2-2 and obtain S-victory at boss node	2
	B41	新編「三川艦隊」ソロモン方面へ！	Deploy the new Mikawa fleet to the Solomon waters (5-1) and obtain S-victory at boss	3
	C6	演習を強化、艦隊の練度向上に努めよ！	Get 4 victories in practice mode within the same day.	1
	D18	観艦式を敢行せよ！	Complete Expedition 8.	1
	B41	「第六駆逐隊」対潜哨戒を徹底なのです！	Deploy the new 6th Destroyer Division on an ASW patrol(1-5)!	2
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 background — Background on Akashi's Improvement Arsenal

Akashi is animated on the Improvement Arsenal screen, blinking her eyes and occasionally looking towards the options on the left.

Akashi Improvement Arsenal page animation — Click to see the animation

- She also has two separate sprites for her basic and Kai forms, reflecting her headband and heftier rigging. See here.