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O Type Observation Autogyro Kai

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No.324 オ号観測機改
Heli.png Rotorcraft
Effects: Firepower+1 ASW+10 Accuracy+1
Combat Radius: 1 (Deployment Cost: Bauxite 3)
Scrap value: Fuel 1 Ammo 2 Bauxite 4 (Unbuildable)

Equipment Card O Type Observation Autogyro Kai.png

Equipment Character O Type Observation Autogyro Kai.png

Equipment Item O Type Observation Autogyro Kai.png

Equipment Full O Type Observation Autogyro Kai.png

Refittable Class
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



This is an autogyro that was developed and operated by the Army.
It is a modified version with enhanced anti-submarine capabilities.
It is the ancestor of the modern shipborne helicopter, as a rotary-wing anti-submarine patrol aircraft, and can be operated from landing ships with flight decks, light aircraft carriers, aviation battleships, and aviation cruisers.


Rotorcraft Rotorcraft are ASW Aircraft, being used to trigger some OASW and Land-based ASW attacks.

As they do not have any Dive Bombing Dive Bomber Attack stat, they do not participate to Phases 2 & 3 of Aerial Combat and are immune to shootdown. They:

  • Will launch during aerial battle if other planes are launched, but cannot start an aerial battle on their own.
  • CV(B/L) equipped with them will still require a Dive Bomber Dive Bomber or a Torpedo Bomber Torpedo Bomber to attack submarines, as they are unable to attack anything without a bomber.
  • AS and AR can equip them, but the former cannot attack SS, and the latter has a carrying capacity of 0 so they do not function.
  • AO can equip them, but their attack animation will still be a depth charge animation.

Their LBAS Combat Radius cannot be extended.


How To Obtain

Stock equipment of: Hyuuga Kai NiHyuuga Kai Ni

Upgradeable from: Ka Type Observation AutogyroKa Type Observation Autogyro

From quest: F84 (choice)

Ranking reward for:

  • May 2019: 21-100 (★+3), 101-500 (★+3)

Updates History

  • 2019-03-27: Implemented
  • 2020-08-27: Visible bonuses increased

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
Ise Kai NiIse Kai Ni +1 +2 +1 [1]
Hyuuga Kai NiHyuuga Kai Ni
Kaga Kai Ni GoKaga Kai Ni Go
+2 +3 +1 [2]
Noshiro Kai NiNoshiro Kai Ni +4 +1 Non-stackable between any Rotorcraft
Yahagi Kai Ni (B)Yahagi Kai Ni
Yahagi Kai Ni B
+3 +1 Non-stackable between any Rotorcraft
  1. Firepower+0 Anti-Submarine Warfare+1 prior to 2020-08-27
  2. Firepower+0 Anti-Submarine Warfare+2 prior to 2020-08-27


Heli.png O Type Observation Autogyro Kai

Improvement Conversion
★ Improvement
0~5 6~9
Equipment Card O Type Observation Autogyro Kai 2.png
O Type Observation Autogyro Kai 2
Development material Consumed 6/7 7/8 16/30
Improvement material Consumed 3/4 4/5 7/14
- Equipment Card Type 96 Fighter.png Equipment Card Ka Type Observation Autogyro.png
- Item Icon New Model Aerial Armament Material.png
Resources Fuel60 Ammunition60 Steel30 Bauxite160
Ship Helper Conversion
Ship Banner Hyuuga Kai Ni.png
Hyuuga Kai Ni
Equipment Card O Type Observation Autogyro Kai 2.png
O Type Observation Autogyro Kai 2
Mon Tue Wed Thu Fri Sat Sun
Improvement Improved effects
Rotorcraft 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★
Anti-Submarine Warfare 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
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

See Also