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Smoke Generator Kai (Smoke Screen)

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No.501 発煙装置改(煙幕)
Smoke Generator.png Surface Ship Equipment
Effects: Evasion+3
trigger Smoke screen
Scrap value: Fuel 2 Ammo 0 Steel 0 Bauxite 2 (Unbuildable)

Equipment Card Smoke Generator Kai (Smoke Screen).png

Equipment Character Smoke Generator Kai (Smoke Screen).png

Equipment Item Smoke Generator Kai (Smoke Screen).png

Equipment Full Smoke Generator Kai (Smoke Screen).png

Refittable Ship Types
Coastal Defense Ship Destroyer
Light Cruiser Torpedo Cruiser
Heavy Cruiser Training Cruiser
Aviation Cruiser Fast Battleship
Battleship Aviation Battleship
Light Carrier Standard Aircraft Carrier
Armored Carrier Seaplane Tender
Submarine Aircraft Carrying Submarine
Submarine Tender Fleet Oiler
Repair Ship Amphibious Assault Ship



An improved shipboard smoke generator that creates a "smoke screen" hiding the fleet from enemies.
It is mainly used by small ships such as destroyers, and by generating a large "smoke screen", it obstructs the direct sights of enemy artillery and bombing attacks, protecting the fleet.
This improved version has better performance than the previous model, and by installing multiple smoke generators, it is possible to deploy a denser smoke screen.
※Be careful when attacking enemies equipped with radars!


Smoke Generator Smoke Generators can be used in combat to deploy a smoke screen.

Example of a large smoke deployed.
  • There are 3 smoke screen sizes, being Small < Medium < Large.
    • The maximum smoke size that can be generated is dependent on the number of smoke generators, being respectively 1/2/3.
    • Note that Improved improvements also affect the maximum smoke level possible.
  • It sharply reduces the accuracy of all fleets, proportionally to the smoke screen size (the hit rate is still capped at 11%).
    • This effect can be partially bypassed by using radars (both sides).
  • The effect will last for the day battle, even so the animation will fade before the battle's end.

Smoke activation button next to the Formation ones.
  • If equipped, it can be activated with a specific button when selecting the formation.
    • It can be activated multiple times per sortie until it triggers, being triggerable once, in day battle only.
  • It cannot be activated in Exercises in the current implementation.
  • The trigger rate is not 100% and depends on the fleet's flagship's luck Luck, as well as the amount and type of Smoke Generators used.
    • For combined fleets, it is the luck of the main flagship.
    • The size of the triggered smoke screen depends on how many smoke generators are used.
  • It will only trigger at the beginning of the Shelling phase.

The 3 different smoke size

  • The smoke gives an Accuracy malus to both fleets when used:
    • Please note that these are initial estimations and are subject to change.
    • It is currently unknown if the airstrike accuracy is affected by the smoke.
    • Some modifiers are impossible to determine because the fleet hit the lower bound hit rate (11% hard cap).
    • There are some inconsistencies between "old" and "new" enemies.
    • Having a (surface ?) radar equipped reduces the smoke effect for both fleets, but only for the shelling phase.
[math]\displaystyle{ \text{Mod}_\text{smoke} }[/math][1]
Day Shelling
Fleet Radar Equipped Type 1 Type 2 Type 3
Allied No < 0.3 <0.33 <0.37
Yes 0.35 0.25 < 0.37
Enemy No < 0.69 < 0.7 <0.7
Yes 0.91 0.83 0.75
Torpedo Phase
Fleet Type 1 Type 2 Type 3
Allied 0.45 0.42 0.42
Enemy 0.7 0.6 0.5
Allied 0.25
Enemy 1

  • AA effects:
    • The smoke affects the allied shootdown but not the enemy shootdown.
    • No fixed shootdown above 2 has been observed under a smoke.
    • The guaranteed shootdown does not seem to be affected.
    • A modifier to the Adjusted AA is suspected but there is not enough data to confirm it.
  • The Smoke reduce the Anti-Air Rocket Barrage trigger rate either directly or by reducing the Adjusted AA.

Behave as if it was 2 base Smoke Generator (Smoke Screen) at once.


How To Obtain

From quest: F115

Event reward for:

Updates History

  • 2023-04-23: Implemented

Fit Bonuses

Smoke Generator Kai (Smoke Screen) Equipment Bonuses
Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Accuracy Evasion Note
Miyuki Kai NiMiyuki Kai Ni - +4
Aoba (any)Aoba
Aoba Kai

Sendai (any)Sendai
Sendai Kai
Sendai Kai Ni

Kamikaze (any)Kamikaze
Kamikaze Kai

Harukaze (any)Harukaze
Harukaze Kai

Uranami (any)Uranami
Uranami Kai
Uranami Kai Ni

Shikinami (any)Shikinami
Shikinami Kai
Shikinami Kai Ni

Johnston (any)Johnston
Johnston Kai

Samuel B. Roberts (any)Samuel B. Roberts
Samuel B. Roberts Kai
Samuel B. Roberts Mk.II
- +3
Haguro (any)Haguro
Haguro Kai
Haguro Kai Ni

Atago (any)Atago
Atago Kai

Fubuki (any)Fubuki
Fubuki Kai
Fubuki Kai Ni

Amagiri (any)Amagiri
Amagiri Kai
Amagiri Kai Ni
Amagiri Kai Ni D

Inazuma (any)Inazuma
Inazuma Kai

Hatsushimo (any)Hatsushimo
Hatsushimo Kai
Hatsushimo Kai Ni

Kasumi (any)Kasumi
Kasumi Kai
Kasumi Kai Ni
Kasumi Kai Ni B

Hamanami (any)Hamanami
Hamanami Kai
- +2


Improvement Improved effects
Smoke Generator 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★
Firepower 1.00 1.41 1.73 2.00 2.23 2.44 2.64 2.82 3.00 3.16
Night Battle Power 1.00 1.41 1.73 2.00 2.23 2.44 2.64 2.82 3.00 3.16
Accuracy Day? 1.00 1.41 1.73 2.00 2.23 2.44 2.64 2.82 3.00 3.16
Accuracy Night? 1.30 1.84 2.25 2.60 2.91 3.18 3.44 3.68 3.90 4.11
Trigger rate Increased
Smoke level Increased

See Also