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Help:Akashi Upgrades

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Revision as of 19:34, 4 August 2023 by Jigaraphale (talk | contribs)
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Introduction

This article aims to provide a rough guide to help you decide on what to spend screws on. Because most improvement bonuses are "square-rooted", the first upgrade provides the largest relative gain per screw, therefore it is critical to get relevant important equipment to Improved+1 before working on others. Please refer to:

The Breakpoint Myth

Breakpoints refer to points where upgrade bonuses reach whole numbers. These points are stressed because of the way the game rounds down the results of most formulas. The misconception is that a 1.99 bonus is just as good as a 1.00 bonus because of rounding. While there is a slight grain of truth to the myth, things get a little complex in practice. Due to how many multipliers and other bonuses are involved, trying to hit equipment upgrade breakpoints doesn't affect very much in the grand scheme of things.

The most important thing to do is to upgrade your equipment to certain critical points:

  • Improved+1 : Provides the biggest power increase (square-rooted only).
  • Improved+6 : The point when failures start to kick in and costs take a jump.
  • Max-Improved : The final step to maximize upgrade bonuses.

Screw Guaranteeing/Saving

In most cases, it is statistically cheaper to either toggle or not the "guaranteed improvement".

Reminder :

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%

Average screw cost when not guaranteed, assuming Akashi is Kai and not counting any equipment cost:

Average costs.png

As expected, when the guaranteed cost is too high, not guaranteeing the upgrade is on average cheaper screw-wise, but this is not counting any potential equipment that may be lost and so may imply a higher screw cost.

Guaranteeing worthiness per base upgrade screw cost can then be defined as followed:

When upgrading any equipment, Devmats and Screw are consumed, and eventually one or several equipment and consumables.

  • Since obtaining Devmats is not an issue, their cost is simply ignored.
  • Since failing an upgrade does not consume any consumables, they are ignored.
  • For equipment consumed :
    • If they are craftable or relatively easy to obtain, their cost is negligible in front of any screw cost.
    • If the equipment consumed is a very rare one, then guaranteeing the upgrade should be evident.
    • If the equipment consumed is itself made via Akashi's upgrades, then its total screw cost must be added to the base screw costs used in later examples.

guaranteed cost 1st time guaranteeing is worth it (in Improved)
0 6th Improved
1+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
1 6th Improved
2+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
2 6th Improved
3 Max-Improved
4+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
3 6th Improved
4 8th Improved
5+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
4 6th Improved
5 8th Improved
6 Max-Improved
7+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
5 6th Improved
6 7th Improved
7 9th Improved
8 Max-Improved
9+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
6 6th Improved
7 7th Improved
8 9th Improved
9 Max-Improved
10+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
7 6th Improved
8 7th Improved
9 8th Improved
10 9th Improved
11 Max-Improved
12+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
8 6th Improved
9 7th Improved
10 8th Improved
11 9th Improved
12 Max-Improved
13+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
9 6th Improved
10 6th Improved
11 8th Improved
12 9th Improved
13 9th Improved
14 Max-Improved
15+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
10 6th Improved
11 6th Improved
12 7th Improved
13 9th Improved
14 9th Improved
15 Max-Improved
16 Max-Improved
17+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
11 6th Improved
12 6th Improved
13 7th Improved
14 8th Improved
15 9th Improved
16 9th Improved
17 Max-Improved
18+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
12 6th Improved
13 6th Improved
14 7th Improved
15 8th Improved
16 9th Improved
17 9th Improved
18 Max-Improved
19 Max-Improved
20+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
13 6th Improved
14 6th Improved
15 7th Improved
16 8th Improved
17 9th Improved
18 9th Improved
19 9th Improved
20 Max-Improved
21+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
14 6th Improved
15 6th Improved
16 7th Improved
17 7th Improved
18 8th Improved
19 9th Improved
20 9th Improved
21 Max-Improved
22 Max-Improved
23+ Never

guaranteed cost 1st time guaranteeing is worth it (in Improved)
15 6th Improved
16 6th Improved
17 7th Improved
18 7th Improved
19 8th Improved
20 9th Improved
21 9th Improved
22 9th Improved
23 Max-Improved
24 Max-Improved
25+ Never

There is only one equipment with a base brut screw cost above 15 (the SK Radar), and as every equipment consuming expensive "Akashi exclusive" or rare equipment, the average screw cost is less important that the raw cost, meaning that guaranteeing the upgrade is always worth it

Improvement Guide

Several rankings for equipment improvements. Do note that:

  • Many equipment possibly improbable are omitted, as they are either:
    • Already listed in one of the lists,
    • Are obtainable elsewhere for cheaper,
    • Are just not worth improving or upgrading.
  • Some equipment can be in several lists.

Quests Improvements

Several Quests require specific equipment to be upgraded in order to be completed, while others simply allow the use of upgraded equipment for conversion.

Quests Requirements

Here is the list of equipment that required to be improved to complete some quests:

  • All improvements are lost during conversions.
Quests Requirements
Quest Equipment Improved Level Notes
F36 61cm Triple (Oxygen) Torpedo Mount
61cm Quintuple (Oxygen) Torpedo Mount
Max-Improved Both
F51 Type 2 Seaplane Fighter Kai Max-Improved
F52 Type 2 Seaplane Fighter Kai Max-Improved
F58 Zuiun (634 Air Group) Max-Improved
F61 F61 Max-Improved
F63 F6F-5 Max-Improved
F74 Prototype 41cm Triple Gun Mount Max-Improved
F76 12.7cm Twin Gun Mount Model A Kai 2 Max-Improved
F78 12.7cm Twin Gun Mount Model B Kai 2 Max-Improved
F87 Zuiun Kai Ni (634 Air Group) Max-Improved
F101 Type 0 Reconnaissance Seaplane Model 11B Max-Improved
F103 Type 3 Active Sonar Max-Improved
F104 Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force) Max-Improved
F105 Type 1 Land-based Attack Aircraft Model 22A Max-Improved Requires to craft 8 Tenzan Model 12A
F111 Type 98 Reconnaissance Seaplane (Night Recon)
Type 0 Reconnaissance Seaplane Model 11B
Max-Improved Both
F116 35.6cm Twin Gun Mount Kai San (Dazzle Camouflage) Improved+3 All Improved past 3 are lost on conversion
F117 Late Model Bow Torpedo Mount (6 tubes) Max-Improved
Fq1 Type 96 Fighter Max-Improved
Fq7 12.7cm Twin Gun Mount Model A Kai 2 Max-Improved
Fy2 Swordfish Max-Improved
Fy10 Type 0 Reconnaissance Seaplane Max-Improved

Ultra Highly Advised

It is highly recommended to improve the following equipment to Max-Improved before proceeding with those quests as any Improved are carried over to the reward , and the rewards cannot be improved afterward!

Ultra Highly Advised
Quest Equipment
F13 Type 97 Torpedo Bomber (Tomonaga Squadron)
F14 Type 99 Dive Bomber (Egusa Squadron)
F15 Zero Fighter Model 52C (601 Air Group)

Highly Advised

In those quests, any Improved the equipment has, are carried over to the reward. It is therefore advised to upgrade the equipment before completing the quest, as it is cheaper to do so.

Highly Advised
Quest Equipment Notes
F19 Type 97 Torpedo Bomber (Murata Squadron) Not improvable yet
F24 Type 0 Fighter Model 21 (Skilled) It is advised to start improvements with Fm1 for this chain.
F26 Type 0 Fighter Model 52 (Skilled)
F27 Zero Fighter Model 52C (w/ Iwai Flight)
F28 Type 0 Fighter Model 21 (Skilled) It is advised to start improvements with Fm1 for this chain.
F29 Zero Fighter Model 21 (w/ Iwamoto Flight)
F30 Zero Fighter Model 52A (w/ Iwamoto Flight)
Fm1 Type 0 Fighter Model 21
Fm2 Type 0 Fighter Model 21 (Skilled) It is advised to start improvements with Fm1.

Traps

Some quests allow the use of upgraded equipment for completion, but will not keep any of the current equipment improvements, and so should be cleared with unimproved equipment:

Traps
Quest Equipment
F40 Type 1 Land-based Attack Aircraft
F62 TBF
F86 Suisei Model 12A
F89 7.7mm Machine Gun
F107 Ki-102 B
F112 5inch Single Gun Mount Mk.30
F115 Smoke Generator (Smoke Screen)
Fq2 Type 96 Land-based Attack Aircraft
Fq5 Type 0 Fighter Model 52

Collection Improvements

Some equipment are only obtainable via Akashi upgrades.

  • The list can be found here
  • If completing the Kancodex is a personal goal, then crafting those equipment becomes a necessity in the long run.
  • Making all those equipment should NOT be a priority over the rest, as most are not very useful or even useless.
  • See below for when making those equipment overlap with advised improvements.

Upgrade Advices

Here is a list of improvements that have as a main goal to "upgrade" said equipment into a better one.

  • Do that certain upgrades can be done in chains, with part of the chain ranging from worse than the upgrade, equivalent to, or even better.
  • The advisedness is here ranked from the most at 1, to least at 10.
  • The "Total Srew Cost" is given as an indication, but does not reflect "real" with guaranteeing savings and consumed equipment being great factors to take into account.
  • Several good equipment are not listed there as they can be obtained otherwise more cheaply, or because the upgrade is just not worth it.
Upgrade Advices
Priority Level Equipment Goal Equipment To Upgrade Total Srew Cost Notes
6 41cm Triple Gun Mount Kai Prototype 41cm Triple Gun Mount 69
5 41cm Twin Gun Mount Kai 2 41cm Triple Gun Mount Kai 92 Consumes 1 Prototype 46cm Twin Gun Mount
4 41cm Triple Gun Mount Kai 2 41cm Triple Gun Mount Kai 93
2 12cm 30 Tube Rocket Launcher Kai 2 12cm 30-tube Rocket Launcher 40 A goal is to 6, enough to equip a full "carrier fleet".
1 Type 2 Seaplane Fighter Kai Type 0 Reconnaissance Seaplane 40 The goal is to have at least 6 good SPF
1 Kyoufuu Kai Type 2 Seaplane Fighter Kai 77
3 Type 1 Armor Piercing Shell Type 91 Armor Piercing Shell 22
10 Type 1 Armor Piercing Shell Kai Type 1 Armor Piercing Shell 35 The best AP shell, but extremely expensive
1 Special Type 2 Amphibious Tank Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force) 39
1 Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force) Daihatsu Landing Craft 24
4 Toku Daihatsu Landing Craft Daihatsu Landing Craft 29
5 Armed Daihatsu Daihatsu Landing Craft 23 Consumes a Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)
5 F6F-5 F6F-3 70
7 Type 0 Fighter Model 64 (Skilled Fighter-bomber) Type 0 Fighter Model 64 (Air Superiority Fighter Specification) 70
5 Shiden Kai 4 Shiden Kai 2 59
8 Seafire Mk.III Kai Spitfire Mk.V 49
3 Spitfire Mk.V Spitfire Mk.I 33
6 Re.2005 Kai Re.2001 CB Kai 60
10 Re.2001 CB Kai Re.2001 OR Kai 49 Only used to make the Re.2005 Kai
10 Fulmar (Reconnaissance Fighter/Skilled) Fulmar 39 Only useful in some "European Events"
9 Type 99 Dive Bomber Model 22 (Skilled) Type 99 Dive Bomber Model 22 36
6 SB2C-3 SBD-5 43
8 Prototype Type 97 Torpedo Bomber Kai (Skilled) No. 3 Model E (w/ Type 6 Airborne Radar Kai) Type 97 Torpedo Bomber (Skilled) 45
10 Tenzan Model 12A Tenzan 34
9 Tenzan Model 12A Kai (w/ Type 6 Airborne Radar Kai) Prototype Type 97 Torpedo Bomber Kai No. 3 Model E (w/ Type 6 Airborne Radar Kai) 63
5 Jet Keiun Kai Prototype Keiun (Carrier-based Reconnaissance Model) 86
8 Type 2 Two-seat Fighter Toryuu Model C Type 2 Two-seat Fighter Toryuu 33
3 Ki-96 Type 2 Two-seat Fighter Toryuu Model C 38
8 Ki-102 B Ki-96 60
5 Type 1 Fighter Hayabusa Model II Type 1 Fighter Hayabusa Model II 39
6 Shiden Kai (343 Air Group) 301st Fighter Squadron Shiden Model 21 Shiden Kai 71
7 Do 217 E-5 + Hs293 Initial Model Do 17 Z-2 63 A great LBB with AAR but with low range
10 Type 1 Land-based Attack Aircraft Model 34 Type 1 Land-based Attack Aircraft Model 22A 56 Consumes 8 Tenzan Model 12A
7 Type 4 Heavy Bomber Hiryuu (Skilled) Type 4 Heavy Bomber Hiryuu 72 A great LBB with AAR but with low range
10 12cm Single Gun Mount Kai 2 12cm Single Gun Mount 19 A good gun but in too few situations
9 Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4 12.7cm Twin Gun Mount Model A Kai 2 38 A great gun but in too few situations
3 5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37 5inch Single Gun Mount Mk.30 Kai 101 Best AACI small gun
9 12.7cm Twin Gun Mount Model C Kai 3 12.7cm Twin Gun Mount Model C Kai 2 34 A great gun but in too few situations
5 14cm Twin Gun Mount Kai 14cm Twin Gun Mount 17 Rarely more than 4 are needed
3 15.2cm Twin Gun Mount Kai 2 15.2cm Twin Gun Mount Kai 44 Best CL gun
9 15.5cm Triple Gun Mount Kai 15.5cm Triple Gun Mount 34
8 15.5cm Triple Secondary Gun Mount Kai 15.5cm Triple Secondary Gun Mount 34
6 15.5cm Triple Secondary Gun Mount Kai 2 15.5cm Triple Secondary Gun Mount Kai 53
10 8inch Triple Gun Mount Mk.9 mod.2 8inch Triple Gun Mount Mk.9 42 Best cruiser gun for FP
7 35.6cm Triple Gun Mount Kai (Dazzle Camouflage) 35.6cm Twin Gun Mount (Dazzle Camouflage) 43
6 35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage) 35.6cm Triple Gun Mount Kai (Dazzle Camouflage) 70
9 16inch Mk.VIII Twin Gun Mount Kai 16inch Mk.V Twin Gun Mount 56
10 16inch Mk.VIII Twin Gun Mount Kai 38.1cm Mk.I Twin Gun Mount 48
9 16inch Mk.I Triple Gun Mount Kai + FCR Type 284 16inch Mk.I Triple Gun Mount + AFCT Kai 68
7 46cm Triple Gun Mount Kai 46cm Triple Gun Mount 69
10 51cm Twin Gun Mount Prototype 51cm Twin Gun Mount 85
3 16inch Triple Gun Mount Mk.7 + GFCS 16inch Triple Gun Mount Mk.7 100
8 8cm High-angle Gun Kai + Additional Machine Guns 8cm High-angle Gun 49
5 Type C Kouhyouteki Type A Kouhyouteki 28
5 Type 13 Air Radar Kai (Late Model) Type 13 Air Radar Kai 55
6 15m Duplex Rangefinder Kai + Type 21 Radar Kai 2 + Skilled Fire Direction Center 15m Duplex Rangefinder + Type 21 Radar Kai 2 80
10 SK + SG Radar SK Radar 94
9 Type 32 Surface Radar Kai Type 32 Surface Radar 58
6 Type 4 Passive Sonar Type 93 Passive Sonar 29
5 Type144/147 ASDIC Type124 ASDIC 57
10 Type 3 Shell Type 3 Shell 60 Only marginal stat boost
7 Bi Type 40mm Twin Autocannon Mount QF 2-pounder Octuple Pom-pom Gun Mount 19 Very cheap
6 Zuiun Model 12 (634 Air Group) Zuiun Model 12 69
4 Zuiun (634 Air Group/Skilled) Zuiun Model 12 (634 Air Group) 56
3 Zuiun Kai 2 (634 Air Group) Zuiun (634 Air Group/Skilled) 86
1 Prototype Night Zuiun (Attack Equipment) Zuiun Kai 2 (634 Air Group) 110
10 S-51J Kai S-51J 96 Extremely niche
6 Type 4 20cm Anti-ground Rocket Launcher (Concentrated Deployment) Shipborne Model Type 4 20cm Anti-ground Rocket Launcher 53
4 Ryuusei Kai (Skilled) Ryuusei Kai 47

Improvement Advices

Here is a list of improvements that have as a main goal to "enhance" said equipment's stats.

  • In some cases, the equipment can be upgraded, but the upgrade is inferior to the improved base equipment,
  • In some cases, the improved equipment only shows its best potential on certain ships, thanks to Visible Fit Bonuses,
  • Some of the listed equipment below are obtained from above listed upgrades,
  • Equipment being improved only for upgrade purposes are not listed there,
  • The improvements related to Quests are not listed there, and should be done with the quests in mind.
Improvement Advices
Priority Level Equipment Base Screw Cost Notes
1 Combat Ration 0 Only used to farm screws with Fd6
1 Shiden Kai 4 4 12 AA fighter
3 F6F-5 6 12 AA fighter
7 Type 0 Fighter Model 64 (Air Superiority Fighter Specification) 5
5 Type 0 Fighter Model 64 (Skilled Fighter-bomber) 6
10 Type 0 Fighter Model 64 (Two-seat w/ KMX) 5
9 Type 99 Dive Bomber Model 22 (Skilled) 3
10 Swordfish Mk.II (Skilled) 3
9 TBF 3
10 Type 2 Reconnaissance Aircraft 3 Ultra niche role
3 Ki-96 4
5 Type 1 Fighter Hayabusa Model III A 4
2 Spitfire Mk.V 3
8 Bomb-carrying Type 1 Fighter Hayabusa Model III Kai (65th Squadron) 4
4 Type 1 Land-based Attack Aircraft Model 34 5
9 Type 1 Land-based Attack Aircraft (Hachiman Force) 3
5 Type 1 Land-based Attack Aircraft (Nonaka Squadron) 5
10 12cm Single Gun Mount Kai 2 2 Very niche
8 12.7cm Twin Gun Mount Model A Kai 2 2
5 Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4 3
4 12.7cm Twin Gun Mount Model A Kai 3 (Wartime Modification) + Anti-Aircraft Fire Director 4
9 12.7cm Single High-angle Gun Mount (Late Model) 2 Only one, very niche
6 12.7cm Twin Gun Mount Model C Kai 2 2
3 12.7cm Twin Gun Mount Model C Kai 3 5
1 12.7cm Twin Gun Mount Model D Kai 2 5 Best DD gun, with night bonuses
9 130mm B-13 Twin Gun Mount 5
6 5inch Single Gun Mount Mk.30 Kai 7
3 12.7cm Twin Gun Mount Model B Kai 4 (Wartime Modification) + Anti-Aircraft Fire Director 6
1 10cm Twin High-angle Gun Mount + Anti-Aircraft Fire Director 3 2nd best AACI small gun
4 14cm Twin Gun Mount Kai 3
5 Bofors 15.2cm Twin Gun Mount Model 1930 3
5 15.2cm Twin Gun Mount Kai 2 Great CL gun
1 15.2cm Twin Gun Mount Kai 2 3 Best CL gun
8 15.5cm Triple Gun Mount Kai 4
2 20.3cm (No.2) Twin Gun Mount 2
1 20.3cm (No.3) Twin Gun Mount 2
6 8inch Triple Gun Mount Mk.9 2
4 8inch Triple Gun Mount Mk.9 mod.2 3
7 16inch Triple Gun Mount Mk.6 mod.2 4
3 16inch Triple Gun Mount Mk.6 mod.2 8
9 16inch Mk.VIII Twin Gun Mount Kai 5
8 16inch Mk.I Triple Gun Mount Kai + FCR Type 284 5
10 30.5cm Triple Gun Mount Kai 4
9 38.1cm Mk.I/N Twin Gun Mount Kai 3
10 38cm Twin Gun Mount Kai 3
4 35.6cm Triple Gun Mount Kai (Dazzle Camouflage) 4
4 35.6cm Twin Gun Mount Kai 3 (Dazzle Camouflage) 6
2 38cm Quadruple Gun Mount Kai 7 Great gun for most (F)BB(V)
3 41cm Triple Gun Mount Kai 2 7
3 41cm Triple Gun Mount Kai 2 7
5 46cm Triple Gun Mount Kai 7 Very nice
8 51cm Twin Gun Mount 7 Very nice
4 8cm High-angle Gun Kai + Additional Machine Guns 4 For RE usage only
8 90mm Single High-angle Gun Mount 1
9 10cm Twin High-angle Gun Mount Kai + Additional Machine Guns 4 For RE usage only
5 10cm Twin High-angle Gun Mount Battery Concentrated Deployment 5
8 15.2cm Triple Gun Mount 6
5 15.2cm Triple Gun Mount 4
2 15.2cm Triple Gun Mount 2
7 53cm Twin Torpedo Mount 1 Only one, very niche
5 533mm Quintuple Torpedo Mount (Initial Model) 3
4 61cm Triple (Oxygen) Torpedo Mount Late Model 3
3 61cm Quadruple (Oxygen) Torpedo Mount 1 Only one
1 61cm Quadruple (Oxygen) Torpedo Mount Late Model 3
2 61cm Quintuple (Oxygen) Torpedo Mount 3
2 61cm Quintuple (Oxygen) Torpedo Mount 5
7 Type 13 Air Radar Kai (Late Model) 3
8 SG Radar (Initial Model) 6
8 Type 21 Air Radar Kai 2 5
10 SK + SG Radar 6
6 Type 32 Surface Radar Kai 5
5 Type 3 Active Sonar 2
3 Type 3 Active Sonar Kai 4
3 Type 4 Passive Sonar 3
10 Type 0 Passive Sonar 3 Unusable on most ASW ships
3 Type 2 Depth Charge 2
3 Type 3 Depth Charge Projector 2
4 Type 3 Depth Charge Projector (Concentrated Deployment) 3
3 Type 2 Depth Charge Kai 2 3
2 Type 91 Armor Piercing Shell 1
1 Type 1 Armor Piercing Shell 1
10 Type 1 Armor Piercing Shell Kai 7
1 Type 3 Shell 4
2 Type 3 Shell Kai 6
4 Type 3 Shell Kai 2 6
4 2cm Flakvierling 38 3 Has great fit bonuses
1 12cm 30-tube Rocket Launcher Kai 2 4 Most useful AA gun
5 25mm Triple Autocannon Mount (Concentrated Deployment) 3
2 25mm Triple Autocannon Mount (Concentrated Deployment) 2
10 New Model High Temperature High Pressure Boiler 8
5 New Kanhon Design Anti-torpedo Bulge (Medium) 6
10 Pugliese Underwater Protection Bulkhead 4
5 New Kanhon Design Anti-torpedo Bulge (Large) 6
2 Searchlight 2 Only one
10 Type 96 150cm Searchlight 3 Only one
10 Swordfish Mk.II Kai (Reconnaissance Seaplane Model) 3
3 Type 0 Observation Seaplane 2
3 Type 0 Reconnaissance Seaplane Model 11B 4
9 Fairey Seafox Kai 4
3 Shiun 4
5 Ro.44 Seaplane Fighter bis 4
2 Type 2 Seaplane Fighter Kai (Skilled) 7
2 Kyoufuu Kai 4
2 Kyoufuu Kai 2 7
10 Laté 298B 3
5 Zuiun (634 Air Group/Skilled) 6 4th best SBP
3 Zuiun Kai 2 (634 Air Group) 8 2nd best SBP
10 S-51J Kai 8 Ultra niche
11 Type 3 Command Liaison Aircraft Kai 3 Useless
1 Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force) 2 Best against Installations
1 Special Type 2 Amphibious Tank 2 Best against Installations
6 Toku Daihatsu Landing Craft 2 Good for Expeditions
3 Soukoutei (Armored Boat Class) 2 Geat against Installations and PT Imps
3 Armed Daihatsu 3 Geat against Installations and PT Imps

Improvement Traps

Here is a list of equipment that should NOT be upgraded, as they are needed to upgrade better equipment, and thus upgrading them renders them less valuable.

Improvement Traps
Equipment
Prototype 35.6cm Triple Gun Mount
Prototype 46cm Twin Gun Mount
Type 13 Air Radar Kai (Late Model)
Type 21 Air Radar Kai
Zuiun Model 12 (634 Air Group)

See Also