Introduction
Development requires 
resources and 
development materials (one dev. mat. is required for each attempt). The rarity and success rate depend on the resource recipe used and your secretary ship's class. Your secretary ship is the lead ship in your first fleet marked #1.
Some equipment is not craftable, see list below.
Often you will fail to produce an item from a recipe, denoted by the penguin-in-a-box screen. In this case, the development material used will be refunded. Development materials can be earned by completing quests, expeditions, and World 2-4.
Please Read This First
- The recipes presented here do not guarantee that you will get what you want.
- Percentage of success relates to: HQ Level, Secretary Ship Type, and amount of resources used.
- Page recipes should come from databases or external sites with at least hundreds of documented attempts. For your own personal lucky recipes and experiences, please use the comments section.
Development theory
According to gathered data, equipment development follows a few patterns. Theoretically, the recipe for any piece of equipment is 10 times its scrap value.
- Some specific equipment can only be developed when the Secretary Ship is of the correct ship class (not necessarily one that can equip it).
- When developing equipment, the resource(s) you choose to spend the most determines which crafting table the game pulls the result from. If there's a tie, Fuel/Steel (same table) has the highest priority, followed by the Ammo table, and then lastly the Bauxite table.
- For example, Type 0 Observation Seaplane has a theoretical development value of 10 Fuel / 10 Ammo / 20 Bauxite, so in theory it could be created by the 10/10/10/20 recipe. However, Type 0 Observation Seaplane can only be crafted from the Fuel/Steel table, so the recipe that uses the least resource while still capable of developing Type 0 Observation Seaplane is either 20/10/10/20 or 10/10/20/20 (both can be used).
Development recipes
Input material can be adjusted by one digit unit at the top and bottom of the frame that says the number in the "▼" button "▲".
NOTE: These recipes are the minimum required resource costs, condensed down to the most recommended equipment for ease of navigation and use. If you would like to see recipes for other items, please see List of development recipes by item. Yellow Highlighted recipes have large samples sizes and are more likely to have accurate data.
HQ level required: 20
HQ level Recommended: 30
Recommended Flagship: Armored Aircraft Carrier, Standard Aircraft Carrier
Surface Combat Equipment
HQ level required: 20
HQ level Recommended: 30
Recommended Flagship: Heavy Battleship, Battleship, Fast Battleship, Aviation Battleship
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Data | Note |
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| 10 | 300 | 250 | 10 | 1222 Data 5.6% 46cm gun |
Good Recipe for gathering 46cm gun, and 15.5cm Triple Gun (Yellow)
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| 10 | 251 | 250 | 10 | 5519 Data 3.7% 46cm gun |
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| 100 | 251 | 250 | 30 | 699 Data 3.9% 46cm gun |
Have chance produce  Engine
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| 10 | 90 | 90 | 30 | 2056 Data 1.7% 10cm High Angle gun |
no heavy artillery, focus on shell type weapon: Type 3 Shell Type 91 AP
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| 10 | 20 | 50 | 10 | 3134 Data 4.1% 10cm High Angle gun |
focus on 15.5cm Triple gun (Yellow)
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| 10 | 10 | 30 | 10 | 7354 Data 9.8% 10cm High Angle gun |
Secretary： DD or CL focus on  10cm High Angle gun
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Anti-submarine Warfare
HQ level required: 10
HQ level Recommended: 20
Recommended Flagship: Destroyer, Light Cruiser, Torpedo Cruiser, Submarine
Note that Submarine cannot equip Depth Charge
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Data | Note |
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| 10 | 10 | 10 | 20 | 8794 Data 2.0% Type 3 SONAR |
With 59.6% penguin, theoretically 3.4% chance to get Type 3 SONAR per
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| 10 | 10 | 10 | 11 | 314 Data 4.1% Type 93 SONAR |
Good for daily quests, with 86.9% chance to return your
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| 10 | 30 | 10 | 10 | 5707 Data 2.4% Type 3 Depth Charge |
With 61.2% penguin, theoretically 3.9% chance to get  Type 3 Depth Charge per
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| 10 | 30 | 10 | 31 | 7116 Data 2.1% Type 3 SONAR |
Use Shimakaze for higher chance of Type 3 Sonar (unconfirmed) |
| 10 | 50 | 10 | 51 | 1204 Data 2.2% Type 3 SONAR |
Increasing material will decrease the chance to get penguin |
RADAR
HQ level required: 20
HQ level Recommended: 30
Recommended Flagship: Battleship, Aviation Battleship, Aircraft Carrier
ENGINE
HQ level required: 20
HQ level Recommended: 30
Recommended Flagship: Battleship, Aviation Battleship, Aircraft Carrier
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Data | Note |
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| 100 | 10 | 200 | 10 | 788 Data 2.9% Enhanced Steam Boiler |
Focus on Only
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| 100 | 251 | 250 | 10 | 1491 Data 3.8% Enhanced Steam Boiler |
Flagship: Battleship More expensive, but can yield 46cm Triple Gun Mount
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Miscellaneous
Drum Canister
HQ level required: None
HQ level Recommended: 20
Recommended Flagship: Destroyer, Light Cruiser
Drum Canister can be obtained from Weekly Quest F12
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Data | Note |
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| 10 | 10 | 10 | 10 | 9903 Data 4.2% Drum Canister |
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| 10 | 10 | 11 | 10 | 5089 Data 4.6% Drum Canister |
slightly higher chance to obtain Drum Canister
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| 10 | 10 | 30 | 10 | 7354 Data 9.8% 10cm High Angle gun |
have chance to obtain 10cm High Angle gun
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Equipment currently not craftable
List of equipment currently not craftable but is obtainable as stock equipment from at least one ship. Note that some of these ships may be event-exclusive drop or reward, see Ships currently not buildable.
List of equipment currently obtainable as Quest Reward. All of these quests are one-time only and limit the number of equipment that can be acquired. Some quests may require event-exclusive ship drop or reward. Excludes rewards that are also stock equipment of at least one ship.
| No | Name | How to get |
|---|---|---|
| 042 | Repair Team | new players get 2, Quests A3, A10, A23, A25, A30, A32, A33, B11, B16, B19, B29, D5, WA02, bought from cash shop |
| 064 | Ju 87C Kai | Quests D6, D7 |
| 088 | Type 22 Surface RADAR Kai 4 | Quest A38 |
| 094 | Tenzan Model 12 (Tomonaga Squadron) | Quest F13 |
| 095 | 53cm Submarine Bow Torpedo Mount (8 tubes) | Quests D13, D14 |
| 100 | Suisei (Egusa Squadron) | Quest F14 |
| 108 | Skilled Carrier-based Aircraft Maintenance Personnel | Quest B28 |
| 110 | Reppuu (601 Air Group) | Quest F15, Winter 2015 Event E-1 (A,B) reward |
| 116 | Type 1 Armor-Piercing (AP) Shell | Quests B31, B32, Improvement Arsenal (from Type 91 Armor-Piercing (AP) Shell) |
List of uncraftable equipment that cannot be received as Stock Equipment or as Quest Reward, but obtainable via Akashi's Improvement Arsenal.
| No | Name | How to get |
|---|---|---|
| 103 | Prototype 35.6cm Triple Gun Mount | Improvement Arsenal (from 35.6cm Twin Gun Mount) |
| 130 | 12.7cm Twin High-angle Mount + Anti-Aircraft Fire Director | Improvement Arsenal (from Type 94 Anti-Aircraft Fire Director with Maya Kai Ni second ship) |
List of equipment not obtainable by all players currently. These equipment were available in the past as Event Reward or Ranking Rewards, and may still be available this way in the future.
| No | Name | How to get |
|---|---|---|
| 043 | Repair Goddess | Events: 2013 Spring E-1, Summer E-2, Fall E-3, 2014 Spring E-4, Summer E-4, Fall E-3
Ranking: 2013 June (1-20), Nov (1-3), bought from cash shop |
| 053 | Reppuu Kai | 2014 Spring E-1, Ranking: 2015 Apr (1-20) |
| 056 | Shinden Kai | 2013 Spring E-4 |
| 067 | 53cm Hull-mount (Oxygen) Torpedoes | 2013 Fall E-3, Ranking: 2014 Jan (1-3) |
| 081 | Zuiun Model 12 (634 Air Group) | Ranking: 2014 Mar (1-3), Apr (1-20), May (1-20), Aug (1-100) |
| 083 | Tenzan (931 Air Group) | Ranking: 2014 Feb (1-20), Mar (1-20), Apr (1-100), June (1-500), July (1-20), 2015 Feb (1-20) |
| 089 | Type 21 Air RADAR Kai | Ranking: 2014 Apr (1-3), May (1-3), June (1-500), Aug (1-100) |
| 117 | 46cm Twin Gun Mount Prototype | Ranking: 2014 Sep (1-5ｘ2, 6-100), Oct (1-20ｘ2), Nov (1-500), 2015 Jan (1-500), Winter 2015 Event E-1 (B) reward |
| 118 | Shiun | Ranking: 2014 Sep (1-500), Oct (1-500), Dec (1-100), 2015 Mar (1-100), Apr (1-500) |
| 128 | Prototype 51cm Twin Cannon | Winter 2015 Event E-2 (A) reward (A), Spring 2015 Event E-1 (A) reward |
| 132 | Type 0 Passive SONAR | Ranking: 2015 Feb (1-5ｘ2, 6-500) |
| 139 | 15.2cm Twin Gun Mount Kai | Ranking: 2015 Apr (1-5ｘ2, 6-500) |