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20.3cm (No.2) Twin Gun Mount

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No.90 20.3cm(2号)連装砲
RedGunMedium.png Medium Caliber Main Gun
Effects: Firepower+9 AA+3 Accuracy+1 RangeMedium
Scrap value: Ammo 3 Steel 4 (Buildable)

Equipment Card 20.3cm (No.2) Twin Gun Mount.png

Equipment Character 20.3cm (No.2) Twin Gun Mount.png

Equipment Item 20.3cm (No.2) Twin Gun Mount.png

Equipment Full 20.3cm (No.2) Twin Gun Mount.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



The no.2 twin gun is a slightly upgraded version of the 20.3cm twin gun.
The excellent heavy cruiser main guns were upgraded and used as the main guns of the Myoukou-class.
Other heavy cruisers had their early-model guns eventually replaced with this one during their modernizations.


Main GunsSmall Caliber Main GunMedium Caliber Main GunLarge Caliber Main Gun are the main armament used by surface ships. Their main stats are the "firepower" Firepower and "accuracy" Accuracy. They are notably required to trigger all Artillery Spotting attacks as well as some Night Cut-Ins, notably the "Double Attack" (DA).


How To Obtain


Stock equipment of: Ashigara Kai NiAshigara Kai Ni (x3), Choukai Kai NiChoukai Kai Ni, Furutaka Kai NiFurutaka Kai Ni (x2), Haguro Kai NiHaguro Kai Ni (x2), Kako Kai NiKako Kai Ni (x2), Maya Kai NiMaya Kai Ni, Myoukou Kai NiMyoukou Kai Ni (x2), Nachi Kai NiNachi Kai Ni (x2)

Upgradeable from: 20.3cm Twin Gun Mount20.3cm Twin Gun Mount

From quest: By4 (x2, choice), F118 (x2, choice)


Used to improve: 20.3cm (No.2) Twin Gun Mount20.3cm (No.2) Twin Gun Mount, 203mm/53 Twin Gun Mount203mm/53 Twin Gun Mount, 8inch Triple Gun Mount Mk.98inch Triple Gun Mount Mk.9, 8inch Triple Gun Mount Mk.9 mod.28inch Triple Gun Mount Mk.9 mod.2

Updates History

  • 2014-05-23: Implemented
  • 2014-10-24: Stats increased: Firepower+8 → Firepower+9, became improvable and upgradeable to 20.3cm (No.3) Twin Gun Mount20.3cm (No.3) Twin Gun Mount
  • 2017-10-25: Night battle Hidden Fit Bonuses added
  • 2018-11-16: Visible bonuses added
  • 2020-02-07: Became buildable
  • 2020-03-27: Visible bonuses increased

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
AobaAoba +1 Added 2020-03-27
KaiAoba Kai +1 +1
+ LOS Radar +3 +2 +2
+ AIR Radar +5 +2
KinugasaKinugasa +1 Added 2020-03-27
KaiKinugasa Kai Only +1
Kai NiKinugasa Kai Ni +2 +1
+ LOS Radar +3 +2 +2
+1 Added 2020-03-27
Kai NiFurutaka Kai Ni
Kako Kai Ni
+ LOS Radar +3 +2 +2
Mogami Kai Ni (Toku)Mogami Kai Ni
Mogami Kai Ni Toku


Other Mogami-classMogami

+1 Added 2020-03-27


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.2) Twin Gun Mount 0 10 100 130 0 2/3 2/3 - M
M M X K K K Myoukou
Kinugasa Kai Ni
Can be upgraded to 20.3cm(no.3) Twin Gun Mount
6 2/4 2/4 1
10 4/8 4/11 1
Improvement Improved effects
Medium Caliber Main Gun 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

See Also

20 cm/50 3rd Year Type naval gun 2 GÔ (Mark II) guns