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20.3cm (No.3) Twin Gun Mount

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No.50 20.3cm(3号)連装砲
RedGunMedium.png Medium Caliber Main Gun
Effects: Firepower+10 AA+4 Accuracy+1 RangeMedium
Scrap value: Ammo 3 Steel 4 (Unbuildable)

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 Ship Types
Fast Battleship Battleship
Aviation Battleship Standard Aircraft Carrier
Armored Carrier Light Carrier
Heavy Cruiser Aviation Cruiser
Light Cruiser Torpedo Cruiser
Training Cruiser Destroyer
Coastal Defense Ship Submarine
Aircraft Carrying Submarine Seaplane Tender
Fleet Oiler Submarine Tender
Repair Ship Amphibious Assault Ship

Mechanics

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).

Notes

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 quest: B155 (★+6), Cy5 (x2, choice), G11 (x2, choice)

From limited-time quest: 2101 LQ2 (★+8, choice), 2401 D1 (★+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

Uses

Used to improve: 20.3cm (No.3) Twin Gun Mount20.3cm (No.3) Twin Gun Mount

Updates History

  • 2013-05-05: Implemented as ranking reward
  • 2013-09-18: Night battle Hidden Fit Bonuses added
  • 2014-10-24: Stats increased: Firepower+9 → Firepower+10, became improvable
  • 2017-10-25: Stats increased: Accuracy+0 → Accuracy+1
  • 2020-03-27: Visible bonuses added
  • 2024-01-25: Became upgradeable to Prototype 20.3cm (No.4) Twin Gun MountPrototype 20.3cm (No.4) Twin Gun Mount

Fit Bonuses

20.3cm (No.3) Twin Gun Mount Equipment Bonuses
Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Accuracy Evasion Note
Mogami Kai Ni /TokuMogami Kai Ni
Mogami Kai Ni Toku
- +3 +1
(2nd equipped) +2 One-time
(3rd equipped) +1 One-time
(4th equipped) +1 One-time
+ Surface Radar +4 +2 +3 One-time
+ Type 21 Air RadarType 21 Air Radar OR Type 21 Air Radar Kai 2Type 21 Air Radar Kai 2 +1 +3 +2 One-time
+ Type 21 Air Radar Kai 2Type 21 Air Radar Kai 2 +2 One-time
Mikuma Kai Ni /TokuMikuma Kai Ni
Mikuma Kai Ni Toku
- +3 +1
(2nd equipped) +2 One-time
(3rd equipped) +1 One-time
(4th equipped) +1 One-time
+ Surface Radar +3 +2 +2 One-time
+ Type 21 Air RadarType 21 Air Radar OR Type 21 Air Radar Kai 2Type 21 Air Radar Kai 2 +1 +3 +2 One-time
+ Type 21 Air Radar Kai 2Type 21 Air Radar Kai 2 +2 One-time
Other Mogami-classMogami
Mikuma
Suzuya
Kumano

Tone-classTone
Chikuma
- +2 +1
(2nd equipped) +2 One-time
(3rd equipped) +1 One-time
(4th equipped) +1 One-time
+ Surface Radar +3 +2 +2 One-time
Myoukou-classMyoukou
Nachi
Ashigara
Haguro

Takao-classTakao
Atago
Maya
Choukai
- +2 +1
+ Surface Radar +3 +2 +2 One-time
Furutaka-classFurutaka
Kako

Aoba-classAoba
Kinugasa
- +1
+ Surface Radar +1 +1 +1 One-time
+ 20.3cm (No.2) Twin Gun Mount20.3cm (No.2) Twin Gun Mount + Surface Radar -1 -1 -1 One-time

Improvement

RedGunMedium.png 20.3cm (No.3) Twin Gun Mount

Improvement Conversion
★ Improvement
Level
0~5 6~9
Equipment Card Prototype 20.3cm (No.4) Twin Gun Mount.png
Prototype 20.3cm (No.4) Twin Gun Mount
Development material Consumed 3/4 3/5 5/10
Improvement material Consumed 2/3 3/5 8/14
Equipment
Consumed
- Equipment Card 20.3cm (No.3) Twin Gun Mount.png Equipment Card 20.3cm Twin Gun Mount.pngx10
Items
Consumed
- Item Icon New Model Gun Mount Improvement Material.pngx2 Item Icon New Model Armament Material.png
Resources Fuel10 Ammunition110 Steel140 Bauxite0
Ship Helper Conversion
Ship Banner Mikuma.png
Mikuma/Kai/Ni/Toku
Equipment Card Prototype 20.3cm (No.4) Twin Gun Mount.png
Prototype 20.3cm (No.4) Twin Gun Mount
Mon Tue Wed Thu Fri Sat Sun
Ship Banner Kumano.png
Kumano/Kai/Ni
Mon Tue Wed Thu Fri Sat Sun
Kumano Kou Kai Ni does not work
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

Trivia

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

See Also