15.2cm Twin Gun Mount Kai
[Edit]
No.139 15.2cm連装砲改
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 Medium Caliber Main GunEffects:
 +6  +3  +4  MediumScrap value:
 2  3  1 (Unbuildable) | |
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| 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
阿賀野型軽巡シリーズの主兵装として開発された両用砲の改良改修型です。
対巡洋艦戦闘に重きをおいた新設計の軽巡主砲で、限定的ですが対空戦闘も可能です。
改修により精度が若干向上しました。軽巡にフィットした新型の主砲兵装です。
The improved and revised model of the dual-purpose gun developed as the main armament for the Agano-class light cruisers.
It was a new design of light cruiser guns that emphasized combat with other cruisers but also possessed limited anti-air capabilities.
This upgrade slightly improves its accuracy. It is a new model main gun that fits light cruisers.
Mechanics
Main Guns
are the main armament used by surface ships. Their main stats are the "firepower" 
and "accuracy" 
. They are notably required to trigger all Artillery Spotting attacks as well as some Night Cut-Ins, notably the "Double Attack" (DA).
- Most main guns come with "Hidden Fit Bonuses/Penalties", especially larger ones.
Notes
How To Obtain
Stock equipment of: Noshiro Kai Ni
Upgradeable from: 15.2cm Twin Gun Mount
From quest: F118 (★+2, choice)
From limited-time quest: 2201 LB02 (★+8, x2, choice), 2311 B7 (★+4, choice)
Ranking reward for:
- Apr 2015: 1-5 (x2), 6-20, 21-100, 101-500
- May 2015: 1-5, 6-20, 21-100, 101-500
- Jul 2015: 1-5, 6-20, 21-100, 101-500
- Sep 2015: 21-100, 101-500
- Dec 2015: 1-5, 6-20, 21-100, 101-500
- Aug 2016: 1-5, 6-20, 21-100
- Dec 2020: 1-5 (★+5), 6-20 (★+5), 21-100 (★+4), 101-500 (★+3)
Uses
Used to improve: 14cm Twin Gun Mount
Updates History
- 2015-05-19: Implemented as ranking reward
- 2015-05-29: Became improvable
- 2017-10-25: Stats increased: +5 → +6
- 2017-12-11: Hidden Fit Bonuses increased
- 2021-02-05: Became upgradeable to 15.2cm Twin Gun Mount Kai Ni
Fit Bonuses
| Ship | Extra Requirement |
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Note |
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Agano-class Kai Ni  
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+2 | +1 |
Improvement
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| Improvement | → | Conversion (helper-dependent) | ||||
| ★ Improvement Level |
0~5 | 6~9 |  15.2cm Twin Gun Mount Kai Ni | |||
 Consumed
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3/4 | 4/6 | 8/11 | |||
 Consumed
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2/3 | 3/6 | 5/11 | |||
| Equipment Consumed |
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| Items Consumed |
- | 
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| Resources |  20  80  100  30
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Improvement  effects
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1★ | 2★ | 3★ | 4★ | 5★ | 6★ | 7★ | 8★ | 9★ | Max★ |
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1.00 | 1.41 | 1.73 | 2.00 | 2.23 | 2.44 | 2.64 | 2.82 | 3.00 | 3.16 |
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1.00 | 1.41 | 1.73 | 2.00 | 2.23 | 2.44 | 2.64 | 2.82 | 3.00 | 3.16 |
| Day
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1.00 | 1.41 | 1.73 | 2.00 | 2.23 | 2.44 | 2.64 | 2.82 | 3.00 | 3.16 |
| Night
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1.30 | 1.84 | 2.25 | 2.60 | 2.91 | 3.18 | 3.44 | 3.68 | 3.90 | 4.11 |