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Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4

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No.455 試製 長12.7cm連装砲A型改四
RedGunLight.png Small Caliber Main Gun
Effects: Firepower+4 AA+3 Armor+1 Accuracy+2 RangeShort
Scrap value: Ammo 2 Steel 3 Bauxite 2 (Unbuildable)

Equipment Card Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4.png

Equipment Character Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4.png

Equipment Item Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4.png

Equipment Full Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4.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

Introduction

大戦時は旧式化したものの、特I型駆逐艦に採用された近代的駆逐艦用主砲の先駆けであるA型砲。
本兵装をテストベッドに砲身を延長更新、初速を高めたif拡張改装の試製兵装です。
対水上戦闘に主軸を置いた各種改良により、駆逐艦主砲としては最大級の火力を誇ります。
基本設計の限界はありますが対空戦闘も可能、次世代の12.7cm砲へ繋ぐ試製砲です。

Though obsolete at the outset of World War 2, the Type-A gun mounted on the Special Type I destroyers was the forerunner of modern destroyer guns.
Using the Type-A as a base, this is a what-if upgrade that extends the barrel length and increases muzzle velocity.
It is among the destroyer main guns with the highest firepower thanks to several upgrades that focus on increasing surface combat ability.
Though the basic design has limitations, it is capable of limited anti-air combat. This is the predecessor to the next generation of 12.7 cm guns.

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

Upgradeable from: 12.7cm Twin Gun Mount Model A Kai 212.7cm Twin Gun Mount Model A Kai 2

From quest: B179

Updates History

  • 2022-04-01: Implemented

Fit Bonuses

Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4 Equipment Bonuses
Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Accuracy Evasion Note
All Fubuki-classFubuki
Shirayuki
Hatsuyuki
Miyuki
Murakumo
Usugumo
Shirakumo
Isonami
Uranami
All Ayanami-classAyanami
Shikinami
Amagiri
Sagiri
Oboro
Akebono
Sazanami
Ushio
All Akatsuki-classAkatsuki
Hibiki
Ikazuchi
Inazuma 		+ Surface Radar +3 +1 +2 One-time
+ Air Radar +4 One-time
+ 61cm Triple Torpedo Mount61cm Triple Torpedo Mount OR 61cm Triple (Oxygen) Torpedo Mount61cm Triple (Oxygen) Torpedo Mount OR 61cm Triple (Oxygen) Torpedo Mount Late Model61cm Triple (Oxygen) Torpedo Mount Late Model +1 +3 One-time
+ 2nd 61cm Triple Torpedo Mount61cm Triple Torpedo Mount OR 61cm Triple (Oxygen) Torpedo Mount61cm Triple (Oxygen) Torpedo Mount OR 61cm Triple (Oxygen) Torpedo Mount Late Model61cm Triple (Oxygen) Torpedo Mount Late Model +1 +2 One-time
+ 61cm Triple (Oxygen) Torpedo Mount Late Model61cm Triple (Oxygen) Torpedo Mount Late Model +1 One-time
Miyuki Kai NiMiyuki Kai Ni - +5 +1
(2nd equipped) +2 One-time
(3rd equipped) +3 One-time
Uranami Kai NiUranami Kai Ni - +5 +1 +1 +1 +1
Isonami Kai NiIsonami Kai Ni - +4 +1 +1
Uranami Base/KaiUranami
Uranami Kai 		- +4 +1
Other Fubuki-classFubuki
Shirayuki
Hatsuyuki
Miyuki
Murakumo
Usugumo
Shirakumo
Isonami 		- +3 +1
Ayanami-classAyanami
Shikinami
Amagiri
Sagiri
Oboro
Akebono
Sazanami
Ushio
Akatsuki-classAkatsuki
Hibiki
Ikazuchi
Inazuma 		- +2 +1

Improvement

RedGunLight.png Prototype Long-barrel 12.7cm Twin Gun Mount Model A Kai 4

Improvement Not
Upgradable
★ Improvement
Level 		0~5 6~9
Development material Consumed 5/6 7/8
Improvement material Consumed 3/3 3/6
Equipment
Consumed 		Equipment Card 12.7cm Twin Gun Mount Model A.pngx3 Equipment Card 12.7cm Twin Gun Mount Model A Kai 2.png
Items
Consumed 		-
Resources Fuel10 Ammunition70 Steel100 Bauxite20
Ship Helper Conversion
Ship Banner Uranami Kai Ni.png
Uranami Kai Ni
 -
Mon Tue Wed Thu Fri Sat Sun
Improvement Improved effects
Small 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

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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