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.

Notes

Ship girl speed can be further increased to Fast, Fast+, or Fastest by using a combination of Improved Kanhon Type Turbine, Enhanced Kanhon Type Boiler or New Model High Temperature High Pressure Boiler. See the following tables for details.

All synergies listed below already include 1 Improved Kanhon Type Turbine because it is an absolute requirement for speed ups.

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 Samuel B. Roberts/Kai	Slow B	Speed set to Fast when equipping a Turbine	Not self-stackable Bonus disabled if equipping any "other" variants of Engine Improvements. Regular speed modding behaviors then.
Amatsukaze Kai/Ni Shimakaze Kai	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 +

See Also

Improving Ship Speed

Listed by stats

• 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