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12.7cm Twin Mount Type-B Kai 2

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12.7cm Twin Gun Mount Model B Kai 2

No.63 12.7cm連装砲B型改二

Small Caliber Main Gun Small Caliber Main Gun

Effects: Firepower+3 Anti-Air+2 Range Short

Scrap Value: Ammunition1 Steel2

Equipment Card 12.7cm Twin Gun Mount Model B Kai 2.png

Equipment Character 12.7cm Twin Gun Mount Model B Kai 2.png

Equipment Item 12.7cm Twin Gun Mount Model B Kai 2.png

Equipment Full 12.7cm Twin Gun Mount Model B Kai 2.png

Refittable Class
Coastal Defense ShipDestroyer
Light CruiserTorpedo Cruiser
Heavy CruiserAviation Cruiser
BattleshipAviation Battleship
Fast BattleshipLight Carrier
Standard CarrierArmored Carrier
Seaplane TenderSubmarine Tender
SubmarineSubmarine Carrier
Repair ShipTraining Cruiser
Fleet OilerAmphibious Assault Ship



This is a slightly improved version of the main guns of fleet destroyers.
Similar to the base model, it has a shielded, enclosed turret that protects against shrapnel and stormy weather. This version has had it's maximum elevation improved.
It was equipped on the destroyer Yuudachi.


How To Obtain

Stock equipment of Amagiri KaiAmagiri Kai, Ayanami Kai NiAyanami Kai Ni, Ayanami KaiAyanami Kai, Harusame KaiHarusame Kai, Hatsuharu Kai NiHatsuharu Kai Ni, Kawakaze Kai NiKawakaze Kai Ni, Kawakaze KaiKawakaze Kai, Ooshio Kai NiOoshio Kai Ni, Oyashio KaiOyashio Kai, Sagiri KaiSagiri Kai, Shikinami Kai NiShikinami Kai Ni, Umikaze KaiUmikaze Kai, Yamakaze KaiYamakaze Kai, Yuudachi Kai NiYuudachi Kai Ni

Upgradeable from 12.7cm Twin Gun Mount12.7cm Twin Gun Mount

From quests: B112 (x2, choice), B124 (x3, choice), C42 (choice)

Ranking reward for:

  • Sep 2013: 支援艦隊
  • Oct 2013: 21-100

Updates History

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine View Range Armor Evasion Note
YuudachiYuudachi +1 +1 +2
Kai NiYuudachi Kai Ni +1
Shigure Kai NiShigure Kai Ni +1
Kawakaze Kai NiKawakaze Kai Ni +2
Shiratsuyu Kai (Ni)Shiratsuyu Kai
Shiratsuyu Kai Ni

Murasame Kai (Ni)Murasame Kai
Murasame Kai Ni
Shikinami Kai NiShikinami Kai Ni +1 +1
Other Ayanami-classAyanami



Akashi's Improvement Arsenal

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
Small Caliber Main Gun 12.7cm Twin Mount Type-B Kai 2 0 10 40 70 0 2/2 2/3 - X X X X Yuudachi Kai Ni
Ayanami Kai Ni
Kawakaze Kai Ni
Upgrades to 12.7cm Twin Mount Type-C Kai 2.
6 2/3 2/4 1xRedGunLight.png
10 4/8 4/7 3xRedGunLight.png


This gun is the modified version of the twin gun Model B which was used by Ayanami-class and Akatsuki-class destroyer. The main difference between the Type A and Type B is that instead of the former's elevation range of −5° to +40°, type B's range is upgraded to 75°, which is required for the more complicated and effective AA systems installed on newer destroyers. Type B armour, however, was too thin to withstand heavy seas and splinter damage, thus the Type B Kai was introduced, adding more protection.

First mounted on Hatsuharu-class destroyers, but the effectiveness is unknown.

See Also

12.7 cm/50 Type 3 naval gun (the later part)