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41cm Twin Gun Mount

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No.8 41cm連装砲
RedGunHeavy.png Large Caliber Main Gun (41 cm)
Effects: Firepower+20 AA+4 RangeLong
Scrap value: Ammo 12 Steel 20 (Buildable)

Equipment Card 41cm Twin Gun Mount.png

Equipment Character 41cm Twin Gun Mount.png

Equipment Item 41cm Twin Gun Mount.png

Equipment Full 41cm Twin Gun Mount.png

Refittable Ship Types
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

Introduction

呉海軍工廠砲熕部で開発された初の純国産戦艦主砲です。
16インチ（40.6cm）を僅かに上回る、この41cm砲は「大和」型の46cm砲が登場するまで世界最大の戦艦砲でした。
これを搭載した「長門」「陸奥」は、当時世界列強の「ビッグ7」として、多くのファンに称えられていました。

Developed by Kure Naval Arsenal's Artillery Division, this is the first entirely domestic battleship gun.
At a little over 16 inches (40.6cm), this 41cm gun was the largest battleship gun in the world until the introduction of the Yamato-class' 46cm guns.
It was equipped on Nagato and Mutsu who it was praised by many fans as two of the great power's "Big 7".

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

Buildable

Stock equipment of: Fusou Kai NiFusou Kai Ni, Haruna KaiHaruna Kai, Hiei Kai NiHiei Kai Ni, Hiei KaiHiei Kai, Kirishima Kai NiKirishima Kai Ni, Kirishima KaiKirishima Kai, Kongou Kai NiKongou Kai Ni, Kongou KaiKongou Kai, Mutsu Kai NiMutsu Kai Ni, Mutsu KaiMutsu Kai (x2), MutsuMutsu, Nagato Kai NiNagato Kai Ni, Nagato KaiNagato Kai (x2), NagatoNagato, Yamashiro Kai NiYamashiro Kai Ni

From quest: A92 (x2, choice), B129 (x4, choice)

Uses

Used to improve: 41cm Twin Gun Mount41cm Twin Gun Mount, 38cm Twin Gun Mount38cm Twin Gun Mount, Prototype 35.6cm Triple Gun MountPrototype 35.6cm Triple Gun Mount, Prototype 41cm Triple Gun MountPrototype 41cm Triple Gun Mount, 38cm Twin Gun Mount Kai38cm Twin Gun Mount Kai, Prototype 46cm Twin Gun MountPrototype 46cm Twin Gun Mount, 381mm/50 Triple Gun Mount Kai381mm/50 Triple Gun Mount Kai, 16inch Triple Gun Mount Mk.716inch Triple Gun Mount Mk.7, 38.1cm Mk.I Twin Gun Mount38.1cm Mk.I Twin Gun Mount, 38.1cm Mk.I/N Twin Gun Mount Kai38.1cm Mk.I/N Twin Gun Mount Kai, 30.5cm Triple Gun Mount30.5cm Triple Gun Mount, 41cm Triple Gun Mount Kai41cm Triple Gun Mount Kai, 38cm Quadruple Gun Mount38cm Quadruple Gun Mount, 38cm Quadruple Gun Mount Kai38cm Quadruple Gun Mount Kai, 51cm Twin Gun Mount51cm Twin Gun Mount, 41cm Triple Gun Mount Kai Ni41cm Triple Gun Mount Kai Ni, 41cm Twin Gun Mount Kai Ni41cm Twin Gun Mount Kai Ni, 16inch Mk.I Twin Gun Mount16inch Mk.I Twin Gun Mount, 16inch Mk.V Twin Gun Mount16inch Mk.V Twin Gun Mount, 16inch Mk.VIII Twin Gun Mount Kai16inch Mk.VIII Twin Gun Mount Kai, 16inch Triple Gun Mount Mk.616inch Triple Gun Mount Mk.6, 16inch Triple Gun Mount Mk.6 mod.216inch Triple Gun Mount Mk.6 mod.2, 16inch Mk.I Triple Gun Mount16inch Mk.I Triple Gun Mount, 16inch Mk.I Triple Gun Mount + AFCT Kai16inch Mk.I Triple Gun Mount + AFCT Kai

Used by quest: F74

Updates History

Improvement

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
Large Caliber Main Gun 41cm Twin Gun Mount 0 30 350 480 0 3/4 2/3 1xRedGunHeavy.png M M1 M2 M M1 M2 N X M M1 N N Nagato
Mutsu
Mutsu Kai
Mutsu Kai Ni 		Upgrades to Prototype 41cm Triple Gun Mount.
6 4/7 3/6 2xRedGunHeavy.png
10 12/20 10/15 2xRedGunHeavy.png
2xItem Icon New Model Gun Mount Improvement Material.png
Improvement Improved effects
Large Caliber Main Gun 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★
Firepower 1.50 2.12 2.59 3.00 3.35 3.67 3.96 4.24 4.50 4.74
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

Developed for the IJN's first 'Eight-Eight Fleet Program' in 1910, in which Japan initially intended to build eight battleships and eight armored cruisers. The Washington Naval Treaty of 1922 scrapped the various plans for other ships to carry this gun, leaving the Nagato-class as the sole class. 

See Also

41 cm/45 3rd Year Type naval gun
Eight-Eight Fleet Program

v · e
Equipment List
Gallery • By Stats • Equipment Types & Icons • Development • Improvement
 
Main Guns
Foreign
10cm Twin HA Gun Mount (+ AAFD) • 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) • Dauntless (SBD • 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 (US) • TBF (US) • Swordfish (Mk.II Skilled • Mk.III Skilled) (UK) • Barracuda (Mk.II • Mk.III) (UK) • Mosquito TR Mk.33 (UK)
 
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
HA
Me 163B (Ger) • Shuusui (Proto)
 
Seaplanes
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
SB2U
HA - High-Angle or High-Altitude; DP - Dual-Purpose; LM - Late Model; CD - Concentrated Deployment or Carrier Division
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