Improvement/Helper

All equipment Improvement through the Akashi's Improvement Arsenal require specific "helper ships" to second Akashi. Depending on the ship second to Akashi, its remodel, and the day of the week, the set of equipment that can be improved will change.

  • Do note that certain ships are incapable of "upgrading" some equipment even though they are able to improve them to Max-Improved,
  • In some cases, an equipment can be upgraded into 2 or 3 different new equipment, with the helper determining the result.

The following equipment do not require any specific helper, and can be improved in all cases where they are not overtaken by other help upgrades, including when Akashi is alone in the fleet:

List of ships and their related improvements

For a given equipment:

  • "Improvement" means that the relevant ship can only improve said equipment but not upgrade it,
  • "Upgrade" means that the relevant ship can both improve and upgrade said equipment (on at least one of her remodels),

N° 1-10

Ship Improvement Upgrade Notes
001
 
Nagato
 
Type 1 Land-based Attack Aircraft (Hachiman Force)
 
41cm Twin Gun Mount
 
Anti-torpedo Bulge (Large)
 
Prototype 41cm Triple Gun Mount
 
41cm Triple Gun Mount Kai
002
 
Mutsu
 
Type 3 Shell Kai
 
41cm Twin Gun Mount Kai 2
 
Type 1 Armor Piercing Shell Kai
 
41cm Twin Gun Mount
 
Anti-torpedo Bulge (Large)
 
Prototype 41cm Triple Gun Mount
 
41cm Triple Gun Mount Kai
003
 
Ise
 
Type 32 Surface Radar Kai
 
12cm 30-tube Rocket Launcher Kai 2
 
41cm Triple Gun Mount Kai 2
 
Zuiun
 
Type 21 Air Radar
 
Type 32 Surface Radar
 
12cm 30-tube Rocket Launcher
 
Ka Type Observation Autogyro
 
Zuiun (634 Air Group)
 
Zuiun Model 12 (634 Air Group)
004
 
Hyuuga
 
Type 32 Surface Radar Kai
 
S-51J Kai
 
12cm 30-tube Rocket Launcher Kai 2
 
Zuiun Kai 2 (634 Air Group)
 
Zuiun
 
Type 22 Surface Radar
 
Type 21 Air Radar
 
Type 32 Surface Radar
 
12cm 30-tube Rocket Launcher
 
Zuiun (634 Air Group)
 
Zuiun (634 Air Group/Skilled)
 
O Type Observation Autogyro Kai
 
O Type Observation Autogyro Kai 2
 
S-51J
005
 
Yukikaze / Dan Yang
 
Type 13 Air Radar Kai
 
12.7cm Twin Gun Mount Model C Kai 2
006
 
Akagi
 
Type 0 Fighter Model 21
 
Type 0 Fighter Model 21 (Skilled)
 
Type 0 Fighter Model 32
 
Type 0 Fighter Model 32 (Skilled)
 
Shiden Model 11
007
 
Kaga
 
Type 0 Fighter Model 21
 
Type 0 Fighter Model 21 (Skilled)
 
Type 0 Fighter Model 32
 
Type 0 Fighter Model 32 (Skilled)
 
Shiden Model 11
008
 
Souryuu
 
Type 97 Torpedo Bomber
 
Type 2 Reconnaissance Aircraft
 
Type 99 Dive Bomber (Egusa Squadron)
 
Type 99 Dive Bomber
009
 
Hiryuu
 
Type 99 Dive Bomber
 
Type 97 Torpedo Bomber (Tomonaga Squadron)
 
Type 97 Torpedo Bomber
010
 
Shimakaze
 
61cm Quintuple (Oxygen) Torpedo Mount
 
New Model High Temperature High Pressure Boiler
 
Prototype 61cm Sextuple (Oxygen) Torpedo Mount
 
Type 22 Surface Radar
 
Enhanced Kanhon Type Boiler

N° 11-20

Ship Improvement Upgrade Notes
011
 
Fubuki
 
12.7cm Twin Gun Mount Model A Kai 3 (Wartime Modification) + Anti-Aircraft Fire Director
 
61cm Triple (Oxygen) Torpedo Mount
 
61cm Triple Torpedo Mount
 
61cm Triple (Oxygen) Torpedo Mount
 
12.7cm Twin Gun Mount Model A Kai 2
 
Type 94 Anti-Aircraft Fire Director
012
 
Shirayuki
 
25mm Single Autocannon Mount
013
 
Hatsuyuki
014
 
Miyuki
 
61cm Triple (Oxygen) Torpedo Mount Late Model
 
Smoke Generator (Smoke Screen)
 
61cm Triple Torpedo Mount
 
61cm Triple (Oxygen) Torpedo Mount
 
12.7cm Twin Gun Mount Model A Kai 2
015
 
Murakumo
 
61cm Triple Torpedo Mount
 
12.7cm Twin Gun Mount Model A Kai 2
016
 
Isonami
 
61cm Triple (Oxygen) Torpedo Mount Late Model
 
12.7cm Twin Gun Mount Model A Kai 3 (Wartime Modification) + Anti-Aircraft Fire Director
 
61cm Triple Torpedo Mount
 
61cm Triple (Oxygen) Torpedo Mount
 
12.7cm Twin Gun Mount Model A Kai 2
017
 
Ayanami
 
61cm Triple (Oxygen) Torpedo Mount Late Model
 
61cm Triple Torpedo Mount
 
12.7cm Twin Gun Mount Model B Kai 2
 
Searchlight
 
61cm Triple (Oxygen) Torpedo Mount
018
 
Shikinami
 
12.7cm Twin Gun Mount Model B Kai 4 (Wartime Modification) + Anti-Aircraft Fire Director
 
61cm Triple Torpedo Mount
 
61cm Triple Torpedo Mount
019
 
Ooi
 
61cm Quadruple (Oxygen) Torpedo Mount
020
 
Kitakami
 
Type 42 Air Radar
 
61cm Quadruple (Oxygen) Torpedo Mount

N° 21-30

Ship Improvement Upgrade Notes
021
 
Kongou
 
Type 1 Armor Piercing Shell Kai
 
Type 3 Shell Kai
 
Type 3 Shell Kai 2
 
15.2cm Single Gun Mount
 
Type 3 Shell
 
Type 22 Surface Radar Kai 4
 
Prototype 35.6cm Triple Gun Mount
 
Type 1 Armor Piercing Shell
 
35.6cm Twin Gun Mount Kai
022
 
Hiei
 
Type 0 Passive Sonar
 
Type 96 150cm Searchlight
 
Type 3 Shell Kai
 
Type 3 Shell
 
Type 91 Armor Piercing Shell
 
Prototype 35.6cm Triple Gun Mount
 
35.6cm Twin Gun Mount Kai
023
 
Haruna
 
Type 1 Land-based Attack Aircraft Model 34
 
Type 3 Shell
 
Prototype 35.6cm Triple Gun Mount
 
35.6cm Twin Gun Mount (Dazzle Camouflage)
 
Type 1 Armor Piercing Shell
 
Shiden Model 21 Shiden Kai
 
35.6cm Triple Gun Mount Kai (Dazzle Camouflage)
 
35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage)
024
 
Kirishima
 
Type 96 150cm Searchlight
 
35.6cm Twin Gun Mount Kai 2
 
Type 96 150cm Searchlight
 
Type 96 150cm Searchlight
 
Type 3 Shell
 
Type 91 Armor Piercing Shell
 
Type 1 Land-based Attack Aircraft Model 22A
025
 
Houshou
 
Type 96 Fighter Kai
 
Type 0 Fighter Model 64 (Skilled Fighter-bomber)
 
Type 97 Torpedo Bomber
 
Type 96 Fighter
 
Type 97 Torpedo Bomber (Skilled)
 
Type 0 Fighter Model 64 (Air Superiority Fighter Specification)
026
 
Fusou
 
Prototype 35.6cm Triple Gun Mount
 
35.6cm Twin Gun Mount
 
15.2cm Single Gun Mount
 
Type 96 Land-based Attack Aircraft
027
 
Yamashiro
 
Prototype 35.6cm Triple Gun Mount
 
Zuiun Model 12 (634 Air Group)
 
Type 1 Land-based Attack Aircraft
028
 
Tenryuu
 
12.7cm Twin High-angle Gun Mount (Late Model)
029
 
Tatsuta
 
53cm Twin Torpedo Mount
 
Daihatsu Landing Craft
030
 
Ryuujou

N° 31-40

Ship Improvement Upgrade Notes
031
 
Mutsuki
 
12cm Single Gun Mount Kai 2
 
12cm Single Gun Mount
032
 
Kisaragi
 
12cm Single Gun Mount Kai 2
 
12cm Single Gun Mount
033
 
Satsuki
 
25mm Twin Autocannon Mount
 
25mm Single Autocannon Mount
 
Daihatsu Landing Craft
 
Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)
034
 
Fumizuki
 
25mm Twin Autocannon Mount
 
25mm Single Autocannon Mount
035
 
Nagatsuki
036
 
Kikuzuki
037
 
Mikazuki
038
 
Mochizuki
039
 
Kuma
040
 
Tama

N° 41-50

Ship Improvement Upgrade Notes
041
 
Kiso
042
 
Nagara
043
 
Isuzu
 
Type 3 Depth Charge Projector
 
Type 3 Active Sonar
 
Type 4 Passive Sonar
 
Type 13 Air Radar
 
25mm Twin Autocannon Mount
 
25mm Triple Autocannon Mount
 
Type 93 Passive Sonar
044
 
Natori
045
 
Yura
 
12.7cm Single High-angle Gun Mount (Late Model)
 
Type 0 Reconnaissance Seaplane Model 11B
046
 
Sendai
 
Type 98 Reconnaissance Seaplane (Night Recon)
047
 
Jintsuu
 
Searchlight
048
 
Naka
 
12.7cm Twin High-angle Gun Mount (Late Model)
 
Type 95 Depth Charge
049
 
Chitose
 
Type 0 Reconnaissance Seaplane
050
 
Chiyoda
 
Type 0 Reconnaissance Seaplane
 
Type A Kouhyouteki

N° 51-60

Ship Improvement Upgrade Notes
051
 
Mogami
 
15.5cm Triple Gun Mount
 
Type 21 Air Radar Kai 2
 
Kyoufuu Kai 2
 
Zuiun
 
Type 21 Air Radar
 
Zuiun Model 12
 
Zuiun Model 12 (634 Air Group)
 
Zuiun Kai 2 (634 Air Group)
052
 
Furutaka
053
 
Kako
054
 
Aoba
 
20.3cm Twin Gun Mount
 
Searchlight
055
 
Myoukou
 
Type 22 Surface Radar Kai 4
 
20.3cm (No.2) Twin Gun Mount
056
 
Nachi
057
 
Ashigara
058
 
Haguro
 
Type 22 Surface Radar Kai 4
059
 
Takao
060
 
Atago

N° 61-70

Ship Improvement Upgrade Notes
061
 
Maya
 
25mm Triple Autocannon Mount (Concentrated Deployment)
 
12.7cm High-angle Gun + Anti-Aircraft Fire Director
 
12.7cm Twin High-angle Gun Mount
 
25mm Triple Autocannon Mount
 
Type 91 Anti-Aircraft Fire Director
 
Type 94 Anti-Aircraft Fire Director
062
 
Choukai
 
Searchlight
063
 
Tone
 
Type 0 Reconnaissance Seaplane
064
 
Chikuma
 
Type 0 Reconnaissance Seaplane
065
 
Hiyou
066
 
Junyou
 
Type 0 Fighter Model 62 (Fighter-bomber)
067
 
Oboro
068
 
Akebono
069
 
Sazanami
070
 
Ushio
 
Shinzan
 
25mm Single Autocannon Mount

N° 71-80

Ship Improvement Upgrade Notes
071
 
Akatsuki
 
12.7mm Single Machine Gun Mount
 
Searchlight
072
 
Hibiki / Verniy
 
12.7mm Single Machine Gun Mount
 
Anti-torpedo Bulge (Medium)
073
 
Ikazuchi
 
12.7mm Single Machine Gun Mount
074
 
Inazuma
 
12.7mm Single Machine Gun Mount
075
 
Hatsuharu
076
 
Nenohi
077
 
Wakaba
078
 
Hatsushimo
 
Type 13 Air Radar Kai
 
61cm Triple (Oxygen) Torpedo Mount Late Model
079
 
Shiratsuyu
 
12.7cm Twin Gun Mount Model B Kai 4 (Wartime Modification) + Anti-Aircraft Fire Director
 
Type 2 Depth Charge
080
 
Shigure
 
Type 22 Surface Radar Kai 4 (Calibrated Late Model)
 
61cm Quadruple (Oxygen) Torpedo Mount Late Model
 
12.7cm Twin Gun Mount Model B Kai 4 (Wartime Modification) + Anti-Aircraft Fire Director
 
Type 3 Active Sonar Kai
 
Type 2 Depth Charge Kai 2
 
Type 13 Air Radar
 
Type 93 Passive Sonar
 
12.7cm Twin Gun Mount Model C Kai 2
 
12.7cm Twin Gun Mount Model C Kai 3

N° 81-90

Ship Improvement Upgrade Notes
081
 
Murasame
 
25mm Triple Autocannon Mount
 
12.7cm Twin Gun Mount Model C Kai 2
 
12.7cm Twin Gun Mount Model C Kai 3
082
 
Yuudachi
 
12.7cm Twin Gun Mount Model B Kai 2
083
 
Samidare
084
 
Suzukaze
085
 
Asashio
086
 
Ooshio
 
Shipborne Model Type 4 20cm Anti-ground Rocket Launcher
087
 
Michishio
 
Type 22 Surface Radar Kai 4 (Calibrated Late Model)
 
Shipborne Model Type 4 20cm Anti-ground Rocket Launcher
088
 
Arashio
 
12.7cm Twin Gun Mount Model C Kai 2
 
12.7cm Twin Gun Mount Model C Kai 2
089
 
Arare
090
 
Kasumi

N° 91-100

Ship Improvement Upgrade Notes
091
 
Kagerou
 
61cm Quadruple (Oxygen) Torpedo Mount Late Model
092
 
Shiranui
093
 
Kuroshio
 
Type 33 Surface Radar
 
Type 3 Depth Charge Projector
094
 
Shouhou

N° 101-110

Ship Improvement Upgrade Notes
106
 
Shoukaku
 
Type 0 Fighter Model 62 (Fighter-bomber)
 
Skilled Deck Personnel + Aviation Maintenance Hands
 
Tenzan
 
Type 0 Fighter Model 52
 
Suisei
 
Prototype Keiun (Carrier-based Reconnaissance Model)
 
Type 0 Fighter Model 52 (Skilled)
 
Type 99 Dive Bomber Model 22
107
 
Zuikaku
 
Type 0 Fighter Model 52
 
Type 0 Fighter Model 52 (Skilled)
 
Zero Fighter Model 52C (w/ Iwai Flight)
 
Zero Fighter Model 62 (Fighter-bomber / Iwai Squadron)
 
Zero Fighter Model 52A (w/ Iwamoto Flight)
 
Type 0 Fighter Model 53 (Iwamoto Squadron)
 
Type 99 Dive Bomber Model 22 (Skilled)
 
Tenzan
 
Prototype Keiun (Carrier-based Reconnaissance Model)
109
 
Kinu
 
25mm Triple Autocannon Mount (Concentrated Deployment)
 
Toku Daihatsu Landing Craft
 
25mm Twin Autocannon Mount
 
25mm Triple Autocannon Mount
 
25mm Single Autocannon Mount
 
Daihatsu Landing Craft
110
 
Abukuma
 
Daihatsu Landing Craft
 
Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)

N° 111-120

Ship Improvement Upgrade Notes
111
 
Yuubari
 
Type 33 Surface Radar
 
Type 3 Active Sonar
 
Type 4 Passive Sonar
 
14cm Twin Gun Mount Kai 2
 
Type 93 Passive Sonar
 
14cm Twin Gun Mount
 
14cm Twin Gun Mount Kai
112
 
Zuihou
 
Type 99 Dive Bomber Model 22 (Skilled)
 
Type 99 Dive Bomber
 
Prototype Type 97 Torpedo Bomber Kai No. 3 Model E (w/ Type 6 Airborne Radar Kai)
 
Type 99 Dive Bomber Model 22
 
Suisei
 
Suisei Model 12A
116
 
Mikuma
 
Prototype 20.3cm (No.4) Twin Gun Mount
 
12.7cm Twin High-angle Gun Mount
 
20.3cm (No.3) Twin Gun Mount
118
 
Hatsukaze
119
 
Maikaze
120
 
Kinugasa
 
20.3cm Twin Gun Mount
 
20.3cm (No.2) Twin Gun Mount

N° 121-130

Ship Improvement Upgrade Notes
123
 
I-19
124
 
Suzuya
 
Kyoufuu Kai
 
Type 0 Fighter Model 63 (Fighter-bomber)
 
8cm High-angle Gun Kai + Additional Machine Guns
 
12.7cm Twin High-angle Gun Mount
 
Shiden Kai 2
 
Type 0 Fighter Model 62 (Fighter-bomber)
 
8cm High-angle Gun
125
 
Kumano
 
Type 0 Fighter Model 63 (Fighter-bomber)
 
8cm High-angle Gun Kai + Additional Machine Guns
 
Shiden Kai 4
 
12.7cm Twin High-angle Gun Mount
 
20.3cm (No.3) Twin Gun Mount
 
8cm High-angle Gun
126
 
I-168
127
 
I-58
 
Special Type 2 Amphibious Tank
 
Late Model Bow Torpedo Mount (6 tubes)
128
 
I-8
 
Special Type 2 Amphibious Tank
 
Late Model Bow Torpedo Mount (6 tubes)

N° 131-140

Ship Improvement Upgrade Notes
131
 
Yamato
 
New Kanhon Design Anti-torpedo Bulge (Large)
 
10cm Twin High-angle Gun Mount Battery Concentrated Deployment
 
Prototype 51cm Twin Gun Mount
 
46cm Triple Gun Mount
 
15.5cm Triple Secondary Gun Mount
 
Anti-torpedo Bulge (Large)
 
Type 21 Air Radar Kai
 
Prototype 46cm Twin Gun Mount
 
15.5cm Triple Secondary Gun Mount Kai
 
46cm Triple Gun Mount Kai
132
 
Akigumo
 
Searchlight
133
 
Yuugumo
 
12.7cm Twin Gun Mount Model D Kai 2
 
Type 22 Surface Radar
134
 
Makigumo
135
 
Naganami
 
12.7cm Twin Gun Mount Model D Kai 2
 
61cm Quadruple (Oxygen) Torpedo Mount Late Model
 
Combat Ration
137
 
Agano
 
8cm High-angle Gun
 
15.2cm Single Gun Mount
 
15.2cm Twin Gun Mount
 
Combat Ration
138
 
Noshiro
 
8cm High-angle Gun
 
15.2cm Twin Gun Mount Kai 2
 
Shiden Kai 2
 
15.2cm Twin Gun Mount
 
15.2cm Twin Gun Mount Kai
 
Ginga
139
 
Yahagi
 
15.2cm Twin Gun Mount Kai
 
8cm High-angle Gun Kai + Additional Machine Guns
 
Shiden Kai 2
 
15.2cm Twin Gun Mount
 
8cm High-angle Gun
140
 
Sakawa
 
Type 42 Air Radar
 
8cm High-angle Gun Kai + Additional Machine Guns
 
Shiden Kai 2
 
Anti-torpedo Bulge (Medium)
 
15.2cm Twin Gun Mount Kai
 
Ginga

N° 141-150

Ship Improvement Upgrade Notes
143
 
Musashi
 
Type 0 Observation Seaplane
 
Type 21 Air Radar Kai
 
New Kanhon Design Anti-torpedo Bulge (Large)
 
10cm Twin High-angle Gun Mount Kai + Additional Machine Guns
 
51cm Twin Gun Mount
 
46cm Triple Gun Mount
 
15.5cm Triple Secondary Gun Mount
 
Anti-torpedo Bulge (Large)
 
Prototype 46cm Twin Gun Mount
 
Prototype 51cm Twin Gun Mount
 
15.5cm Triple Secondary Gun Mount Kai
 
46cm Triple Gun Mount Kai

N° 151-160

Ship Improvement Upgrade Notes
153
 
Taihou
 
Zero Fighter Model 52C (601 Air Group)
 
Tenzan
 
Ryuusei
 
Suisei
 
Ryuusei Kai
154
 
Katori
 
Type 4 Passive Sonar
 
14cm Twin Gun Mount Kai 2
 
Type 93 Passive Sonar
155
 
I-401
 
Special Type 2 Amphibious Tank
 
Late Model 53cm Bow Torpedo Mount (8 tubes)
 
Submarine Radar & Waterproof Telescope
 
Submarine Radar & Passive Radiolocator (E27)

N° 161-170

Ship Improvement Upgrade Notes
161
 
Akitsu Maru
 
Toku Daihatsu Landing Craft
 
Type 1 Fighter Hayabusa Model III A
 
Daihatsu Landing Craft
 
Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)
 
Type 3 Fighter Hien
 
Type 1 Fighter Hayabusa Model II
 
Type 2 12cm Mortar Kai
162
 
Kamoi
 
Type 1 Fighter Hayabusa Model III A
 
Bomb-carrying Type 1 Fighter Hayabusa Model III Kai (65th Squadron)
 
Swordfish (Seaplane Model)
 
Swordfish Mk.II Kai (Reconnaissance Seaplane Model)
 
Type 1 Fighter Hayabusa Model II
163
 
Maruyu
164
 
Yayoi
165
 
Uzuki
167
 
Isokaze
 
Type 13 Air Radar Kai
168
 
Urakaze
169
 
Tanikaze
170
 
Hamakaze

N° 171-180

Ship Improvement Upgrade Notes
171
 
Bismarck
 
38cm Twin Gun Mount Kai
 
Ar196 Kai
 
38cm Twin Gun Mount
 
Do 17 Z-2
174
 
Z1
 
12.7cm Single Gun Mount
 
2cm Flakvierling 38
175
 
Z3
 
12.7cm Single Gun Mount
176
 
Prinz Eugen
 
Ar196 Kai
 
FuMO25 Radar
 
SKC34 20.3cm Twin Gun Mount
 
Do 17 Z-2

N° 181-190

Ship Improvement Upgrade Notes
181
 
Amatsukaze
 
New Model High Temperature High Pressure Boiler
 
12.7cm Twin Gun Mount Model C Kai 3
 
Enhanced Kanhon Type Boiler
 
12.7cm Twin Gun Mount Model C Kai 2
182
 
Akashi
It is Akashi
183
 
Ooyodo
 
Shiun
 
10cm Twin High-angle Gun Mount Kai + Additional Machine Guns
 
Shinzan
 
Fleet Communication Antenna
 
15.5cm Triple Gun Mount
 
10cm Twin High-angle Gun Mount (Carriage)
 
15.5cm Triple Gun Mount Kai
184
 
Taigei / Ryuuhou
 
Bi Type 40mm Twin Autocannon Mount
 
Prototype Type 97 Torpedo Bomber Kai No. 3 Model E (w/ Type 6 Airborne Radar Kai)
 
Tenzan Model 12A
 
Suisei Model 12A
 
Type 0 Fighter Model 52
 
Suisei
 
Type 97 Torpedo Bomber
 
Type 97 Torpedo Bomber (Skilled)
 
Tenzan
186
 
Tokitsukaze

N° 191-200

N° 201-210

Ship Improvement Upgrade Notes
201
 
Unryuu
 
Zero Fighter Model 52C (601 Air Group)
202
 
Amagi
203
 
Katsuragi
205
 
Harusame
 
12.7cm Twin Gun Mount Model C Kai 3 H
 
Bi Type 40mm Twin Autocannon Mount
 
61cm Quadruple (Oxygen) Torpedo Mount
 
12.7cm Twin Gun Mount Model C Kai 2
 
12.7cm Twin Gun Mount Model C Kai 3
209
 
Hayashimo
210
 
Kiyoshimo
 
12.7cm Twin Gun Mount Model D Kai 2
 
61cm Quadruple (Oxygen) Torpedo Mount Late Model
 
Type 1 Armor Piercing Shell Kai
 
Type 13 Air Radar Kai (Late Model)
 
Passive Radiolocator (E27) + Type 22 Surface Radar Kai 4 (Calibrated Late Model)
 
Daihatsu Landing Craft

N° 211-220

Ship Improvement Upgrade Notes
213
 
Asagumo
214
 
Yamagumo
215
 
Nowaki

N° 221-230

Ship Improvement Upgrade Notes
221
 
Akizuki
 
10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director
 
Type 4 Passive Sonar
 
Type 13 Air Radar
 
Type 91 Anti-Aircraft Fire Director
 
Type 94 Anti-Aircraft Fire Director
222
 
Teruzuki
 
10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director
 
Type 4 Passive Sonar
 
Type 13 Air Radar
 
Type 91 Anti-Aircraft Fire Director
 
Type 94 Anti-Aircraft Fire Director
223
 
Hatsuzuki
 
Prototype 61cm Sextuple (Oxygen) Torpedo Mount
 
10cm Twin High-angle Gun Mount Kai + Anti-Aircraft Fire Director Kai
 
10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director
 
Type 94 Anti-Aircraft Fire Director
224
 
Takanami
225
 
Asashimo
 
12.7cm Twin Gun Mount Model D Kai 2
 
61cm Quadruple (Oxygen) Torpedo Mount Late Model
 
Type 13 Air Radar Kai (Late Model)
 
Passive Radiolocator (E27) + Type 22 Surface Radar Kai 4 (Calibrated Late Model)

N° 231-240

Ship Improvement Upgrade Notes
231
 
U-511 / Ro-500
232
 
Graf Zeppelin
233
 
Saratoga
 
F6F-5
 
SK + SG Radar
 
SBD
 
F4F-3
 
F4F-4
 
F6F-3
239
 
Warspite
 
38.1cm Mk.I/N Twin Gun Mount Kai
 
Swordfish Mk.II Kai (Reconnaissance Seaplane Model)
 
38.1cm Mk.I Twin Gun Mount
 
Spitfire Mk.I
 
Swordfish (Seaplane Model)
240
 
Iowa
 
OS2U
 
16inch Triple Gun Mount Mk.7 + GFCS
 
16inch Triple Gun Mount Mk.7

N° 241-250

Ship Improvement Upgrade Notes
241
 
Littorio / Italia
 
OTO 152mm Triple Rapid Fire Gun Mount
 
90mm Single High-angle Gun Mount
 
Pugliese Underwater Protection Bulkhead
 
381mm/50 Triple Gun Mount Kai
 
381mm/50 Triple Gun Mount
 
Ro.43 Reconnaissance Seaplane
242
 
Roma
 
OTO 152mm Triple Rapid Fire Gun Mount
 
90mm Single High-angle Gun Mount
 
381mm/50 Triple Gun Mount Kai
 
381mm/50 Triple Gun Mount
 
Ro.43 Reconnaissance Seaplane
243
 
Libeccio
 
120mm/50 Twin Gun Mount
244
 
Aquila
 
Re.2001 OR Kai
 
Re.2001 CB Kai
245
 
Akitsushima
 
Type 0 Reconnaissance Seaplane
 
Shipborne Model Type 4 20cm Anti-ground Rocket Launcher
248
 
Zara
 
203mm/53 Twin Gun Mount
 
New Kanhon Design Anti-torpedo Bulge (Medium)
 
Ro.44 Seaplane Fighter bis
 
Anti-torpedo Bulge (Medium)
 
Ro.43 Reconnaissance Seaplane
 
Ro.44 Seaplane Fighter
249
 
Pola

N° 251-260

Ship Improvement Upgrade Notes
251
 
Mizuho
 
Type 0 Observation Seaplane
 
Type 2 Seaplane Fighter Kai (Skilled)
 
Kyoufuu Kai
 
Type 0 Reconnaissance Seaplane
 
Type 2 Seaplane Fighter Kai
252
 
Okinami
253
 
Kazagumo
254
 
Arashi
255
 
Hagikaze
256
 
Oyashio
 
61cm Quadruple (Oxygen) Torpedo Mount Late Model
 
12.7cm Twin Gun Mount Model C Kai 3
 
12.7cm Twin Gun Mount Model C Kai 2
257
 
Yamakaze
 
Type 3 Active Sonar Kai
258
 
Umikaze
259
 
Kawakaze
260
 
Hayasui
 
12cm Single High-angle Gun Mount + 25mm Machine Guns Additions

N° 261-270

Ship Improvement Upgrade Notes
265
 
Kashima
 
Shinzan
 
14cm Twin Gun Mount
 
14cm Twin Gun Mount Kai

N° 271-280

Ship Improvement Upgrade Notes
271
 
Kamikaze
 
53cm Twin Torpedo Mount
 
Type 95 Depth Charge
 
Type 2 12cm Mortar Kai
272
 
Asakaze
 
7.7mm Machine Gun
273
 
Harukaze
274
 
Matsukaze
 
7.7mm Machine Gun
275
 
Hatakaze
279
 
Amagiri
280
 
Sagiri

N° 281-290

Ship Improvement Upgrade Notes
281
 
Minazuki
283
 
I-26
284
 
Hamanami
285
 
Fujinami
286
 
Uranami
 
12.7cm Twin Gun Mount Model A Kai 3 (Wartime Modification) + Anti-Aircraft Fire Director
 
Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4
 
61cm Triple Torpedo Mount
 
Daihatsu Landing Craft
 
61cm Triple (Oxygen) Torpedo Mount
 
12.7cm Twin Gun Mount Model A Kai 2

N° 291-300

Ship Improvement Upgrade Notes
291
 
Commandant Teste
 
Laté 298B
 
Swordfish (Seaplane Model)
 
Swordfish Mk.II Kai (Reconnaissance Seaplane Model)
292
 
Richelieu
 
15.2cm Triple Gun Mount
 
Loire 130M
 
38cm Quadruple Gun Mount Kai Deux
 
38cm Quadruple Gun Mount
 
38cm Quadruple Gun Mount Kai
293
 
I-400
 
Late Model 53cm Bow Torpedo Mount (8 tubes)
 
Submarine Radar & Passive Radiolocator (E27)
 
Submarine 53cm Bow Torpedo Mount (8 tubes)
294
 
I-13
 
Late Model Bow Torpedo Mount (6 tubes)
295
 
I-14
 
Late Model Bow Torpedo Mount (6 tubes)

N° 311-320

Ship Improvement Upgrade Notes
311
 
Gangut / Oktyabrskaya Revolyutsiya
 
30.5cm Triple Gun Mount Kai
 
30.5cm Triple Gun Mount
313
 
Tashkent
 
130mm B-13 Twin Gun Mount
 
533mm Triple Torpedo Mount
314
 
Sheffield
315
 
Ark Royal
 
Swordfish Mk.II (Skilled)
 
Skua
 
Swordfish
 
Fulmar
 
Spitfire Mk.I
 
Spitfire Mk.V
317
 
Shimushu
 
Type 95 Depth Charge
318
 
Kunashiri
319
 
Jervis
 
QF 4.7inch Gun Mk.XII Kai
 
Spitfire Mk.I
 
Type124 ASDIC
320
 
Janus
 
Type124 ASDIC

N° 321-330

Ship Improvement Upgrade Notes
321
 
Kasuga Maru / Taiyou
 
Type 1 Fighter Hayabusa Model III A
 
Type 97 Torpedo Bomber (931 Air Group)
 
Type 3 Fighter Hien
 
Type 1 Fighter Hayabusa Model II
322
 
Yawata Maru / Unyou
 
Type 0 Fighter Model 64 (Two-seat w/ KMX)
 
Type 97 Torpedo Bomber (931 Air Group)
324
 
Shinyou
 
Type 97 Torpedo Bomber (931 Air Group)
 
Type 97 Torpedo Bomber (Skilled)
325
 
Luigi Torelli / UIT-25 / I-504
327
 
Kishinami
328
 
Hayanami

N° 331-340

Ship Improvement Upgrade Notes
332
 
Suzutsuki
 
10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director
333
 
Fuyutsuki
 
10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director
 
10cm Twin High-angle Gun Mount
334
 
Etorofu
 
12.7cm Single High-angle Gun Mount (Late Model)
 
Type 95 Depth Charge
335
 
Matsuwa
339
 
Sado
340
 
Tsushima

N° 341-350

Ship Improvement Upgrade Notes
344
 
Gambier Bay
 
SK + SG Radar
 
FM-2
 
SK Radar
349
 
Intrepid
 
SB2C-5
 
SB2C-3

N° 351-360

Ship Improvement Upgrade Notes
351
 
Hiburi
 
Type 3 Depth Charge Projector
 
Type 2 Depth Charge
 
12.7cm Single High-angle Gun Mount (Late Model)
 
Type 3 Depth Charge Projector (Concentrated Deployment)
 
12cm Single High-angle Gun Mount Model E
352
 
Daitou
 
Type 3 Depth Charge Projector
 
Type 2 Depth Charge
 
Type 3 Depth Charge Projector (Concentrated Deployment)
 
12cm Single High-angle Gun Mount Model E

N° 361-370

Ship Improvement Upgrade Notes
361
 
Samuel B. Roberts
 
533mm Quintuple Torpedo Mount (Initial Model)
 
5inch Single Gun Mount Mk.30
362
 
Johnston
 
533mm Quintuple Torpedo Mount (Initial Model)
 
5inch Single Gun Mount Mk.30
365
 
Fukae
370
 
Hirato

N° 371-380

Ship Improvement Upgrade Notes
371
 
Nelson
 
Spitfire Mk.V
 
16inch Mk.I Triple Gun Mount Kai + FCR Type 284
 
16inch Mk.I Triple Gun Mount
 
16inch Mk.I Triple Gun Mount + AFCT Kai
372
 
Rodney
 
16inch Mk.I Triple Gun Mount Kai + FCR Type 284
 
16inch Mk.I Triple Gun Mount
 
16inch Mk.I Triple Gun Mount + AFCT Kai
374
 
Gotland
 
Bofors 15.2cm Twin Gun Mount Model 1930
 
Swordfish Mk.III Kai (Seaplane Model)
 
Fairey Seafox Kai
 
S9 Osprey
 
Swordfish (Seaplane Model)
375
 
Maestrale
 
120mm/50 Twin Gun Mount mod.1936

N° 381-390

Ship Improvement Upgrade Notes
381
 
Nisshin
 
Type A Kouhyouteki
 
Type 2 12cm Mortar Kai
382
 
Natsugumo
383
 
Minegumo
384
 
Hachijou
385
 
Ishigaki
389
 
Duca degli Abruzzi
390
 
Giuseppe Garibaldi

N° 391-400

Ship Improvement Upgrade Notes
395
 
Houston
 
OS2U
 
8inch Triple Gun Mount Mk.9 mod.2
 
8inch Triple Gun Mount Mk.9
396
 
Fletcher
 
SG Radar (Initial Model)
 
5inch Single Gun Mount Mk.30
 
5inch Single Gun Mount Mk.30 Kai
397
 
Atlanta
398
 
Honolulu Kai
399
 
De Ruyter

N° 401-410

Ship Improvement Upgrade Notes
401
 
Colorado
 
OS2U
 
16inch Mk.VIII Twin Gun Mount Kai
 
16inch Mk.I Twin Gun Mount
 
16inch Mk.V Twin Gun Mount
402
 
South Dakota
 
16inch Triple Gun Mount Mk.6 mod.2
 
16inch Triple Gun Mount Mk.6
403
 
Hornet
 
Skilled Deck Personnel + Aviation Maintenance Hands
 
SBD
 
SBD-5
408
 
Souya
 
Type 1 Land-based Attack Aircraft (Nonaka Squadron)
 
12cm Single High-angle Gun Mount + 25mm Machine Guns Additions
 
25mm Single Autocannon Mount
 
Type 3 Fighter Hien Model 1D
 
Type 2 Two-seat Fighter Toryuu

N° 411-420

Ship Improvement Upgrade Notes
411
 
Mikura
 
Type 2 Depth Charge
 
12cm Single High-angle Gun Mount Model E
412
 
Yashiro
 
Type 2 Depth Charge
413
 
Perth
414
 
Grecale
 
120mm/50 Twin Gun Mount Kai A.mod.1937
415
 
Helena
 
SOC Seagull

N° 421-430

Ship Improvement Upgrade Notes
421
 
Shinshuu Maru
 
Soukoutei (Armored Boat Class)
 
Armed Daihatsu
 
Daihatsu Landing Craft
 
Type 4 Heavy Bomber Hiryuu
 
Type 2 Two-seat Fighter Toryuu
425
 
Akishimo

N° 431-440

Ship Improvement Upgrade Notes
431
 
Usugumo
432
 
Ariake
433
 
Yuugure
434
 
Jingei
435
 
Chougei
436
 
I-47
 
Late Model 53cm Bow Torpedo Mount (8 tubes)
437
 
Kaiboukan No.4
438
 
Kaiboukan No.30

N° 441-450

Ship Improvement Upgrade Notes
441
 
Matsu
 
12.7cm Single High-angle Gun Mount Kai 2
442
 
Take
443
 
Ume
 
Type 13 Air Radar Kai (Late Model)
 
Type 13 Air Radar Kai
444
 
Momo

N° 451-460

Ship Improvement Upgrade Notes
453
 
Scirocco
454
 
Washington
 
16inch Triple Gun Mount Mk.6 mod.2
 
16inch Triple Gun Mount Mk.6
455
 
Northampton
 
SOC Seagull

N° 461-470

N° 471-480

Ship Improvement Upgrade Notes
471
 
Makinami
474
 
Tamanami
475
 
Suzunami
477
 
Conte di Cavour
 
Pugliese Underwater Protection Bulkhead
 
Anti-torpedo Bulge (Large)

N° 481-490

Ship Improvement Upgrade Notes
481
 
I-201
 
Late Model Bow Torpedo Mount (4 tubes)
482
 
I-203
 
Late Model Bow Torpedo Mount (4 tubes)
486
 
Hayashio
 
12.7cm Twin Gun Mount Model C Kai 3
 
12.7cm Twin Gun Mount Model C Kai 2
485
 
Victorious
 
Barracuda Mk.III
 
Fulmar
 
Barracuda Mk.II

N° 491-500

Ship Improvement Upgrade Notes
491
 
Salmon
 
21inch 4-tube Bow Torpedo Launcher (Late Model)
 
21inch 4-tube Bow Torpedo Launcher (Initial Model)
492
 
Drum
493
 
Scamp
 
21inch 6-tube Bow Torpedo Launcher (Late Model)
 
Submarine 4-tube Stern Torpedo Launcher (Initial Model)
 
21inch 6-tube Bow Torpedo Launcher (Initial Model)
495
 
Shounan
497
 
Brooklyn
498
 
Kaiboukan No.22
500
 
Yamashio Maru
 
Type 3 Command Liaison Aircraft Kai
 
Type 3 Command Liaison Aircraft (ASW)
 
Type 2 12cm Mortar Kai
 
Type 2 Two-seat Fighter Toryuu Model C
 
Ki-96

N° 501-510

Ship Improvement Upgrade Notes
501
 
Javelin
504
 
Noumi
505
 
Kurahashi
 
Type 2 Depth Charge

N° 511-520

Ship Improvement Upgrade Notes
513
 
Maryland
 
SG Radar (Initial Model)

N° 521-530

Ship Improvement Upgrade Notes
521
 
Ukuru
 
Type 3 Depth Charge Projector (Concentrated Deployment)
 
12cm Single High-angle Gun Mount Model E
522
 
Inagi
 
12cm Single High-angle Gun Mount Model E Kai
 
12cm Single High-angle Gun Mount Model E
523
 
Tuscaloosa
524
 
Nevada
 
14inch/45 Twin Gun Mount
 
14inch/45 Triple Gun Mount
525
 
Langley
527
 
Valiant
 
38.1cm Mk.I Twin Gun Mount

N° 531-540

Ship Improvement Upgrade Notes
531
 
Ranger
 
TBF
 
TBD
533
 
Massachusetts
534
 
C.Cappellini / UIT-24 / I-503
535
 
Jean Bart
 
Loire 130M
 
38cm Quadruple Gun Mount Kai Deux
 
38cm Quadruple Gun Mount Kai

N° 541-550

Ship Improvement Upgrade Notes
541
 
Heywood L. Edwards
543
 
Kumano Maru
544
 
Heian Maru
545
 
No.101 Transport Ship

N° 551-560

Ship Improvement Upgrade Notes
552
 
Phoenix / General Belgrano
 
6inch Triple Rapid Fire Gun Mount Mk.16 mod.2
 
SOC Seagull Late Model (Skilled)
 
6inch Triple Rapid Fire Gun Mount Mk.16
 
SOC Seagull
553
 
Asahi

N° 561-570

Ship Improvement Upgrade Notes
562
 
Mogador
 
13.8cm Twin Gun Mount
564
 
Shirakumo
566
 
Lexington
 
SBD (Yellow Wings)
 
TBD (Yellow Wings)
 
SBD VB-2 (Bomber Squadron)
 
SBD VS-2 (Reconnaissance Squadron)
570
 
Gloire
 
15.2cm Triple Main Gun Mount

N° 571-580

Ship Improvement Upgrade Notes
571
 
I-36
 
Special Type 2 Amphibious Tank
572
 
I-41