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20.3cm(no.3) Twin Gun Mount

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20.3cm (No.3) Twin Gun Mount

No.50 20.3cm(3号)連装砲

Medium Caliber Main Gun Medium Caliber Main Gun

Effects: Firepower+10 Anti-Air+4 Accuracy+1 Range Medium

Scrap Value: Ammunition3 Steel4

Equipment Card 20.3cm (No.3) Twin Gun Mount.png

Equipment Character 20.3cm (No.3) Twin Gun Mount.png

Equipment Item 20.3cm (No.3) Twin Gun Mount.png

Equipment Full 20.3cm (No.3) Twin Gun Mount.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 no.3 twin gun is an upgraded version of the 20.3cm twin gun.
It is a further improved model of the excellent heavy cruiser main gun.
An extremely excellent heavy cruiser main gun with a length of 55 [1]was made.
Although this gun is excellent, it wasn't able to be mass produced due to economic trouble. So only a few prototypes were made.


How To Obtain

Stock equipment of Chikuma Kai NiChikuma Kai Ni, Kinugasa Kai NiKinugasa Kai Ni, Mikuma KaiMikuma Kai, Tone Kai NiTone Kai Ni

Upgradeable from 20.3cm (No.2) Twin Gun Mount20.3cm (No.2) Twin Gun Mount

From quests: B155 (★+6), G11 (x2, choice)

From limited-time quests: 2101LQ2 (★+8, choice)

Ranking reward for:

  • Apr 2013: 1-3, 4-20, 21-100
  • May 2013: 支援艦隊群
  • Jun 2013: 1-20, 21-100, 101-340, 支援艦隊群
  • Jul 2013: 1-3, 4-20, 21-100, 101-500
  • Aug 2013: 1-3, 4-20, 21-100, 101-500, 支援艦隊
  • Sep 2013: 1-3, 4-20, 21-100, 支援艦隊
  • Oct 2013: 1-3, 4-20
  • Nov 2013: 1-3, 4-20, 21-100, 101-500
  • Dec 2013: 1-3, 4-20, 21-100, 101-500
  • Mar 2014: 1-3, 4-20, 21-100, 101-500


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
Medium Caliber Main Gun 20.3cm(no.3) Twin Gun Mount 0 10 110 140 0 3/4 2/3 - X X X X X Mikuma
6 3/5 3/5 1
10 - - -

See Also

20 cm/50 3rd Year Type naval gun Type C mounted.

  1. The original 20.3s had a length of 50. This means the barrel length was 10.15m (20.3x50). The no.3 had a longer barrel of 11.165m (20.3x55).