12cm Single Gun Mount
[Edit]
No.1 12cm単装砲
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 Small Caliber Main GunEffects:
 +1  +1  ShortScrap value:
 1  1 (Buildable) | |
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| 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
旧型の小型砲です。
旧型駆逐艦に標準的主砲として搭載されました。
装填・操砲も人力ですが、シンプルな構造で経済性も高く、駆逐艦や海防艦等の主砲として、長く使われました。
対空射撃には不向きです。
This is an old model small-caliber gun.
It was equipped on older destroyers as their main armament.
Both loading and rotation were manual, but with its simple construction and low cost, it served a long time as the main weapon of destroyers and coastal defense ships.
It cannot be used for anti-air.
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.
- Small Caliber Main Guns bring some accuracy bonus against PT boats.
Notes
How To Obtain
Buildable
Stock equipment of: Asakaze Kai
, Asakaze
, Etorofu
, Fukae
, Fumizuki
, Hachijou
, Harukaze Kai
, Harukaze
, Hatakaze Kai
, Hatakaze
, Hirato
, Ishigaki
, Kamikaze Kai
, Kamikaze
, Kikuzuki
, Kisaragi
, Kunashiri
, Matsukaze Kai
, Matsukaze
, Matsuwa
, Mikazuki
, Minazuki
, Mochizuki
, Mutsuki
, Nagatsuki
, Sado
, Satsuki
, Shimushu
, Tsushima
, Uzuki
, Yayoi
Uses
Used to improve: 12cm Single Gun Mount
, 12cm Single Gun Mount Kai 2
, 12cm Single High-angle Gun Mount Model E
Used by quest: F97
Updates History
- 2013-04-23: Implemented with initial game release
- 2018-07-12: Became improvable and upgradeable to 12cm Single Gun Mount Kai 2
- 2018-08-17: Card CG updated
Improvement
| Type | Name | ★ | Resource | Day | 2nd Ship | Note | ||||||||||||
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Sun | Mon | Tue | Wed | Thu | Fri | Sat | |||||
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12cm Naval Gun | 0 | 10 | 20 | 40 | 0 | 2/2 | 1/2 | 1x
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✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | Mutsuki Kisaragi |
Uses 12cm Single Gun Mount for improvement up to ★+10 Uses Type 22 Surface Radar to upgrade into 12cm Naval Gun Kai 2. |
| 6 | 2/3 | 1/2 | 2x
| |||||||||||||||
| 10 | 2/4 | 2/6 | 1x
| |||||||||||||||
Improvement  effects
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|---|---|---|---|---|---|---|---|---|---|---|
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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 |
Trivia
This gun's basic structure was based on the British QF 4.7in. Mk.IV gun, which was later produced domestically in Japan. The barrel of this gun was later mated to a high-angle mounting and served as AA guns for early Japanese heavy cruisers (ie. Furutaka-class to Takao-class. Both classes had their AA guns exchanged for 12.7cm twin afterward, but Chokai alone was equipped with 12cm singles throughout her career).