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Category:Engine Improvements
This category contains all equipment classified as Engine Improvements.
This category is populated by Template:EquipmentCategoriesKai. Please do not manually add pages to this category.
Mechanics
Ship Speed can be increased to Fast, Fast+, or Fastest by using a combination of 
"Turbine" and "Boilers".
See the following tables for details (most synergies listed include 1 turbine
as it is an common requirement):
| Speed Groups | |||
|---|---|---|---|
| Base Speed | Speed Group | Type | Exceptions |
| Fast | A | CAV |
|
| B1 | N/A |
| |
| B2 | FBB, CV, CVB, CA, CL, CLT, DD | ||
| C | AV |
| |
| Slow | A | N/A |
|
| B | BB, BBV, CVL, CT, AS, AO, LHA |
| |
| C | SS, SSV, AR |
| |
| None | DE | N/A | |
| Speed exceptions | |||
|---|---|---|---|
| Ships | Speed group | Exception | Notes |
| All Fast A | +1  Fit Bonus with the +13 Boiler at 7+ 
|
Stackable | |
| All Slow A | +1 Fit Bonus with the +13 Boiler at 7+ & a Turbine
| ||
Houshou Kai Ni/Sen 
|
Slow A | +1 Fit Bonus with the +13 Boiler
|
Not self-stackable Stackable with above only for +13 Boiler at 6-
|
Inagi Kai Ni
|
Slow B | Not self-stackable and speed capped to fast + | |
| Sentaka Type | Slow C | Not self-stackable | |
Yuubari Kai Ni Toku
|
Slow B | Speed set to Fast when equipping a Turbine
|
Not self-stackable Bonus disabled if equipping any "other" variants of
|
Amatsukaze Kai/Ni 
|
Fast A/B1 | Can equip Boilers in the RE
| |
| Simplified Engine Synergies | ||||||
|---|---|---|---|---|---|---|
Speed Increments |
Boiler Type | Boilers Required | ||||
| Fast A |
Fast B1 Slow A |
Fast B2 Slow B |
Fast C Slow C | |||
| +1 | Any boiler | 1 | ||||
| +2 | +13 boilers
|
1 | 2 | 2 | N/A | |
| +13 boiler + +10 boiler= Total |
0+ 0+ 2 |
1+ 0+ 2 |
0+ 0+ 3 | |||
| +3 (Slow A only) |
+13 boiler + +10 boiler= Total |
N/A | 1+ 0+ 3 |
N/A | ||
| Engine Synergies | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Engine Improvements
|
Speed groups | |||||||||||||||||||||||
| Fast | Slow | |||||||||||||||||||||||
| A | B1 | B2 | C | A | B | C | ||||||||||||||||||
| Main Slots Required |
Turbine
|
+10 Boiler
|
+13 Boiler
|
+13 Boiler 7+
|
Houshou K2/Sen
|
A | Inagi K2
|
Yuub K2T SamyB/K  
|
B | Sentaka Type | C | |||||||||||||
| 0 | 0 | 0 | 0 | fast | slow | |||||||||||||||||||
| 0 | 1 | 0 | 0 | fast | slow | fast | slow | |||||||||||||||||
| 1+ | 0 | 1+ | 0 | fast | slow | |||||||||||||||||||
| 1+ | 0 | 0 | 1+ | 0 | fast | fast | slow | fast | slow | fast | slow | |||||||||||||
| 1 | 0 | 0 | 0 | 1 | fast + | fast | ||||||||||||||||||
| 2+ | 0 | 0 | 0 | 2+ | fast ++ | |||||||||||||||||||
| 1 | 1 | 1 | 0 | fast + | fast + | fast + | fast + | fast | fast | fast | ||||||||||||||
| 2 | 1 | 2 | 0 | fast ++ | ||||||||||||||||||||
| 3+ | 1 | 3+ | 0 | fast ++ | fast + | |||||||||||||||||||
| 1 | 1 | 0 | 1 | 0 | fast ++ | fast + | fast + | fast + | fast | fast + | fast | fast + | fast | |||||||||||
| 2 | 1 | 0 | 2 | 0 | fast ++ | fast ++ | fast ++ | fast + | fast + | |||||||||||||||
| 3+ | 1 | 0 | 3+ | fast ++ | ||||||||||||||||||||
| 2 | 1 | 1 | 1 | fast ++ | fast + | fast ++ | fast + | fast + | fast | |||||||||||||||
| 3+ | 1 | 2+ | 1+ | fast ++ | fast ++ | fast ++ | fast + | |||||||||||||||||
| 3+ | 1 | 1+ | 2+ | fast ++ | fast ++ | fast ++ | fast + | |||||||||||||||||
| 1 | 1 | 0 | 0 | 1 | fast ++ | fast + | fast + | fast + | fast + | fast + | fast | fast + | fast | |||||||||||
| 2+ | 1 | 0 | 0 | 2+ | fast ++ | fast ++ | fast ++ | fast + | ||||||||||||||||
| 2 | 1 | 0 | 1 | 1 | fast ++ | fast ++ | fast ++ | fast + | fast + | |||||||||||||||
Listed By Stats
Most of the stats comparisons indicated here are irrelevant, see Improving Ship Speed to get the full picture.
- Green: Outstanding
- Yellow: Above Average
| No. | Rarity | Name | Equipment Type | 
|
Refittable Types | 
|
|
Notes |
|---|---|---|---|---|---|---|---|---|
| 33 | ☆
|
Improved Kanhon Type Turbine  改良型艦本式タービン
|
Engine Improvement | 6 | DE (Only: Inagi Kai Ni), DD, CL, CLT, CA, CAV, CVL, FBB, BB, BBV, CV, SS, SSV, AV, LHA, CVB, AR, AS, CT, AO | ✔️ | ❌ | |
| 34 | ☆
☆ |
Enhanced Kanhon Type Boiler 強化型艦本式缶
|
10 | ✔️ | ||||
| 87 | ☆
☆ ☆ |
New Model High Temperature High Pressure Boiler 新型高温高圧缶
|
13 | ❌ | ||||
| No. | Rarity | Name | Equipment Type |
|
Refittable Types |
|
|
Notes |
Pages in category "Engine Improvements"
The following 3 pages are in this category, out of 3 total.