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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

v · e
Equipment List
Gallery • By Stats • Equipment Types & Icons • Development • Improvement
 
Main Guns
Foreign
10cm Twin HA Gun Mount (+ AAFD • Kai + AAFD Kai) • 12cm Single HA Gun Mount (Model E • Model E Kai) • 12.7cm HA Gun Mount (Single LM • Twin LM • Single Kai 2 • Twin Kai 2) • 12.7cm Twin HA Gun Mount (Model A Kai 3 + AAFD • Model B Kai 4 + AAFD)
Foreign
14 cm
15-15.5 cm/6 inch
20-20.3 cm/8 inch
30.5-32 cm
305mm/46 Gun Mount (Twin • Triple) (Ita) • 320mm/44 Gun Mount (Twin • Triple) (Ita) • 30.5cm Triple Gun Mount (Kai) (Sov)
35.6 cm/14 inch
38-38.1 cm
41 cm/16 inch
41cm Twin Gun Mount (Kai 2) • 41cm Triple Gun Mount (Proto • Kai • Kai 2) • 16inch Twin Gun Mount (Mk.I • Mk.V • Mk.VIII Kai) (US) • 16inch Triple Gun Mount (Mk.6 • Mk.6 + GFCS • Mk.6 mod.2 • Mk.7 • Mk.7 + GFCS) (US) • 16inch Triple Gun Mount (Mk.I • Mk.I + AFCT Kai • Mk.I Kai + FCR Type 284) (UK)
46 cm
 
Secondary Guns
Surface
Foreign
 
Anti-Air
 
Torpedo Weapons
53cm Twin Torpedo Mount • 53cm Bow O2 Torpedoes • 61cm Torpedo Mount (Triple • Triple O2 • Triple O2 LM • Quad • Quad O2 • Quad O2 LM • Quintuple O2 • Proto Sext O2) • 533mm Quint Torpedo Mount (Initial Model • Late Model) (US) • 533mm Triple Torpedo Mount (Model 53-39) (Sov)
Late Model Bow Torpedo Mount (4 tubes) (+ Skilled Sonar Personnel) • Late Model Bow Torpedo Mount (6 tubes) (+ Skilled Sonar Personnel) • Submarine 53cm Bow Torpedo Mount (8 tubes) (Late Model) • Prototype FaT Type 95 Oxygen Torpedo Kai (IJN/Ger) • 21inch 4-tube Bow Torpedo Launcher (Initial Model • Late Model) (US) • 21inch 6-tube Bow Torpedo Launcher (Initial Model • Late Model) (US) • Submarine 4-tube Stern Torpedo Launcher (Initial Model • Late Model) (US)
Kouhyouteki (Type A • Type C • Type D Kai)
 
Carrier-Based Planes
Other (IJN)
Type 96 (Kai) • Shiden (Kai 2 • Kai 4) • Reppuu (Prototype LM • Model 11 • 601 • Kai • Kai 2 • Kai 2 (CD1/Skilled)) • Prototype Jinpuu • Shinden Kai
Foreign
Bf 109 T Kai (IJN/Ger) • Fw190 (T Kai • A-5 Kai (Skilled)) (IJN/Ger) • Reggiane (2001 OR Kai • 2005 Kai) (IJN/Ita) • Wildcat (F4F-3 • F4F-4) (US) • Hellcat (F6F-3 • F6F-5) (US) • XF5U (US) • FR-1 Fireball (US) • Fulmar (UK) • Seafire Mk.III Kai (UK) • Corsair Mk.II (Ace) (UK/US)
Reppuu Kai 2 Model E (CD1/Skilled) • Hellcat (F6F-3N • F6F-5N) (US) • F4U-2 Night Corsair (US)
Foreign
Ju.87C (Kai • Kai 2 KMX • Kai 2 KMX/Skilled) (IJN/Ger) • Re.2001 CB Kai (IJN/Ita) • SBD (Yellow Wings • VB-2 Bomber Squad) (US) • SBD-5 (US) • Helldiver (SB2C-3 • SB2C-5) (US) • Corsair (F4U-1D (US) • F4U-4 (US) • AU-1 (US) • F4U-7 (Fr/US)) • FM-2 (US) • Skua (UK)
Type 97 (Skilled • 931 • 931/Skilled • Tomonaga • Murata) • Tenzan (601 • 931 • Model 12A • Tomonaga • Murata) • Ryuusei (Kai • Kai Skilled • 601 • CD1 • CD1/Skilled)
Foreign
Re.2001 G Kai (IJN/Ita) • TBD (Yellow Wings) (US) • TBF (US) • Swordfish (Mk.II Skilled • Mk.III Skilled) (UK) • Barracuda (Mk.II • Mk.III) (UK) • Mosquito TR Mk.33 (UK)
Type 97 Model E (Skilled) • Tenzan Model 12A Kai (Skilled  • Murata) • TBM-3D (US) • TBM-3W+3S (JMSDF/US)
 
Land-Based Planes
Toukai (Proto • 901)
"Army"
Type 1 Fighter Hayabusa (Model II • Model II (64) • Model IIIA • Model IIIA (54)) (IJA) • Type 3 Fighter Hien (Model 1D • 244) (IJA) • Type 4 Fighter Hayate (IJA) • Type 2 Two-seat Fighter Toryuu (Model C) (IJA) • Ki-96 (IJA) • Fw 190 D-9 (Ger) • Spitfire (Mk.I • Mk.V • Mk.IX Skilled) (UK)
"Navy"
Raiden • Shiden (Model 11 • Kai • Kai 343/301 • Kai 343/407 • Kai 343/701) • Type 0 Fighter (Model 22 (251) • Model 21 (Tainan) • Model 32 (Tainan)) • Reppuu Kai (352/Skilled)
Jets
Canard
HA
Me 163B (Ger) • Shuusui (Proto)
 
Seaplanes
Type 98 Reconnaissance Seaplane (Night Recon) • Type 0 Reconnaissance Seaplane (11B Kai Night Recon • 11A Kai 2)  • Loire 130M (Kai Skilled) (Fr) • Walrus (UK) • Sea Otter (UK)
Zuiun (631 • 634 • 634/Skilled • Model 12 • Model 12 (634) • Kai 2 (634) • Kai 2 (634/Skilled)) • Seiran (Prototype • 631) • Swordfish (Mk.III Kai • Mk.III Kai Skilled) (UK/Swe) • Laté 298B (Fr)
Type 2 Kai (Skilled) • Kyoufuu (Kai • Kai 2) • Ro.44 Seaplane Fighter (bis) (Ita)
 
Radars
 
Anti-Submarine Warfare
Ka Type Observation Autogyro (IJA) • O Type Observation Autogyro (Kai • Kai 2) (IJA) • S-51J (Kai) (JMSDF/US)
 
Miscellaneous
Night Battle Aid
Facility & Crew
Consumables
Others
Unreleased & removed
HA - High-Angle or High-Altitude; DP - Dual-Purpose; LM - Late Model; CD - Concentrated Deployment or Carrier Division
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