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Prototype 46cm Twin Gun Mount

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No.117 試製46cm連装砲
RedGunHeavy.png Large Caliber Main Gun (Proto 46cm)
Effects: Firepower+23 AA+4 Accuracy+1 RangeVery Long
Scrap value: Fuel 1 Ammo 18 Steel 23 (Unbuildable)

Equipment Card Prototype 46cm Twin Gun Mount.png

Equipment Character Prototype 46cm Twin Gun Mount.png

Equipment Item Prototype 46cm Twin Gun Mount.png

Equipment Full Prototype 46cm Twin Gun Mount.png

Refittable Class
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



The 46cm twin gun mount is one of the main cannons developed in secrecy by the Naval Arsenal.
While it can outrange enemy battleships with its 40km maximum range, it is also lighter than the 46cm triple cannons of the Yamato class. It can be used as the main cannons on other frontline battleships.


How To Obtain

From quest: B129 (choice), B130 (choice)

Ranking reward for:

  • Sep 2014: 1-5 (x2), 6-20, 21-100
  • Oct 2014: 1-5 (x2), 6-20 (x2)
  • Nov 2014: 1-5, 6-20, 21-100, 101-500
  • Jan 2015: 1-5, 6-20, 21-100, 101-500
  • Jun 2015: 21-100, 101-500
  • Jul 2015: 21-100
  • Nov 2015: 101-500
  • Jan 2016: 1-5, 21-100, 101-500
  • Jun 2016: 21-100, 101-500
  • Nov 2016: 1-5, 6-20, 21-100, 101-500

Event reward for:


Used to improve: 41cm Triple Gun Mount Kai41cm Triple Gun Mount Kai

Updates History

  • 2014-10-18: Implemented as ranking reward
  • 2015-02-23: Became improvable and upgradeable to 46cm Triple Gun Mount46cm Triple Gun Mount

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
Large Caliber Main Gun Prototype 46cm Twin Gun Mount 0 40 420 650 40 5/6 3/5 2xRedGunHeavy.png Y Y M M X X X Yamato
Upgrades to 46cm Triple Gun Mount ★+5
6 6/8 4/7 3xRedGunHeavy.png
10 12/18 8/14 4xRedGunHeavy.png

See also