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5inch Naval Gun Mk.30 Kai + GFCS Mk.37

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5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37

No.308 5inch単装砲 Mk.30改+GFCS Mk.37

Dual-purpose Gun Small Caliber Main Gun

Effects: Firepower+3 Armor+1 Evasion+2 Anti-Air+11 Accuracy+6 View Range+3 Range Medium

Scrap Value: Ammunition2 Steel22 Bauxite28

Equipment Card 5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37.png

Equipment Character 5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37.png

Equipment Item 5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37.png

Equipment Full 5inch Single Gun Mount Mk.30 Kai + GFCS Mk.37.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



An excellent dual-purpose gun developed and deployed by the US.
This is the improved version of the gun extensively used by US destroyers in single gun mounts.
This particular version is linked with a fire control system and RADAR. It was also adopted as the main gun of the Fletcher-class destroyers and displays excellent anti-ship and anti-air capabilities.


How To Obtain

Event reward for:

Ranking reward for:

  • Aug 2018: 1-5 (x2), 6-20, 21-100, 101-500

Updates History

  • 2018-09-28: Implemented as ranking reward

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine View Range Armor Evasion Note
USN DestroyersSamuel B. Roberts

Dan YangDan Yang/Yukikaze Kai NiYukikaze Kai Ni
+2 +1 +1
Other USN ShipsAtlanta
+1 +1 +1
Any Other DD +1
Any DE +1 +1

See Also