Akashi's Improvement Arsenal

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

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 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.

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
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	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					-	-	-
	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
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	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
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	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*	?	✓	?	?	?	?	?	Haruna Kai Ni	Uses 35.6cm Twin Gun Mounts for improvement.
		6					?	?	?
		10					?	?	?
	Prototype 35.6cm Triple Gun Mount	0	?	?	?	?	?/?	?/?	-	?	?	?	?	?	?	?	?
		6					?	?	?
		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*	?	✓	?	?	?	?	?	Nagato Kai	Uses 41cm Twin Gun Mounts for improvement.
		6					?	?	?
		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					-	-	-
Type	Name	★	Resource							Day							2nd Ship	Note
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	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					-	-	-
	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
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	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 before ★+6. Uses Type 1 AP Shells past ★+6.
		6					4/6	2/4	1
		10					-	-	-
	25mm Twin Autocannon Mount	0	0	20	10	10	0/1	1/1	-	✓	X	X	X	X	✓	✓	Isuzu Kai Ni
		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	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
	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	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
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	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 (upgrades 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					-	-	-
Type	Name	★	Resource							Day							2nd Ship	Note
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	Type 93 SONAR	0	10	0	30	30	2/2	1/2	-	Y	I	X	X	X	✓	✓	Isuzu Kai Ni 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 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 before ★+6.
		6					6/10	4/6	1
		10					-	-	-
	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
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	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 upgrading.
		6					5/?	3/?	1*
		10					-	-	-
Type	Name	★	Resource							Day							2nd Ship	Note
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	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 upgrading past ★+6
		6					14/18	7/10	1**
		10					-	-	-
Type	Name	★	Resource							Day							2nd Ship	Note
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	Type 0 Observation Seaplane	0	90	40	0	270	4/6	3/5	1*	?	✓	?	?	?	?	?	Mizuho	Uses Zuiuns for improvement.
		6					?	?	?
		10					?	?	?
	Ro.43 Recon Seaplane	0	?	?	?	?	?/?	?/?	-	?	?	?	?	?	?	?	?
		6					?	?	?
		10					?	?	?

Possible Upgrades

Type	Starting Equipment	Upgraded Equipment
/ 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 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
Heavy Gun	35.6cm Twin Gun Mount	Prototype 35.6cm Triple Gun Mount
	35.6cm Twin Gun Mount (Dazzle Camouflage)	?
	Prototype 35.6cm Triple Gun Mount	?
	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	?
	46cm Twin Gun Mount Prototype	46cm Triple Gun Mount ★+5
	46cm Triple Gun Mount	Impossible to upgrade
	Prototype 51cm Twin Cannon	Impossible to upgrade
/ 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
AP Shell	Type 91 Armor-Piercing (AP) Shell	Type 1 Armor-Piercing (AP) Shell
	Type 1 Armor-Piercing (AP) Shell	Impossible to upgrade
Anti-Air Gun	25mm Twin Autocannon Mount	25mm Triple Autocannon Mount ★+3
	25mm Triple Autocannon Mount*	25mm Triple Autocannon Mount (Concentrated Deployment)
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
Torpedo	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
Sonar	Type 93 SONAR	Type 3 SONAR ★+3
	Type 3 SONAR	Impossible to upgrade
DepthCharge	Type 94 Depth Charge	Type 3 Depth Charge ★+3
	Type 3 Depth Charge	Impossible to upgrade
Searchlights	Searchlight	Type 96 150cm Searchlight
	Type 96 150cm Searchlight	Impossible to upgrade
Radars	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
Seaplane	Type 0 Observation Seaplane	?
	Ro.43 Recon Seaplane	Ro.44 Seaplane Fighter

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
Daily	F18	装備の改修強化	Do equipment modernization 1 time (failure OK)	1	Consumes ; 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