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S-51J Kai

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S-51J Kai

No.327 S-51J改

Autogyro Autogyro

Effects: Firepower+2 Accuracy+3 Anti-Submarine+13 View Range+4

Scrap Value: Fuel2 Ammunition3 Bauxite6

Equipment Card S-51J Kai.png

Equipment Character S-51J Kai.png

Equipment Item S-51J Kai.png

Equipment Full S-51J Kai.png

Refittable Class
Coastal Defense ShipDestroyer
Light CruiserTorpedo Cruiser
Heavy CruiserAviation Cruiser
BattleshipAviation Battleship
Fast BattleshipLight Carrier
Standard CarrierArmored Carrier
Seaplane TenderSubmarine Tender
SubmarineSubmarine Carrier
Repair ShipTraining Cruiser
Fleet OilerAmphibious Assault Ship



The autogyro has now evolved into the helicopter.
This is an early helicopter, whose prototype had already flown, and had begun to be used for patrol and communication purposes.
This is a what-if version, obtained by the Maritime Self-Defense Force after the war, and further enhanced.


How To Obtain

Upgradeable from S-51JS-51J

Updates History

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

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine View Range Armor Evasion Note
Ise Kai NiIse Kai Ni +2 +4 +1 [1]
Hyuuga Kai NiHyuuga Kai Ni +4 +5 +2 [2]
Kaga Kai Ni GoKaga Kai Ni Go +5 +6 +4
Noshiro Kai NiNoshiro Kai Ni +4 +1 Non-stackable between any Autogyro
Yahagi Kai Ni (B)Yahagi Kai Ni
Yahagi Kai Ni B
+3 +1 Non-stackable between any Autogyro
  1. Firepower+1 Anti-Submarine+3 prior to 2020-08-27
  2. Firepower+2 Anti-Submarine+4 prior to 2020-08-27

Akashi's Improvement Arsenal

Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Autogyro S-51J Kai 0 240 100 120 390 9/10 8/8 2xSeaplane.png H X X X X X H Hyuuga Kai Ni
6 12/20 8/10 2xDepthCharge.png
10 - - -

See Also