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15.5cm Triple Gun Mount

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No.5 15.5cm三連装砲
RedGunMedium.png Medium Caliber Main Gun
Effects: Firepower+7 AA+4 Accuracy+1 RangeMedium
Scrap value: Ammo 2 Steel 5 (Buildable)

Equipment Card 15.5cm Triple Gun Mount.png

Equipment Character 15.5cm Triple Gun Mount.png

Equipment Item 15.5cm Triple Gun Mount.png

Equipment Full 15.5cm Triple 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



To cover the shortfall of heavy cruisers that were limited by the Treaty, this gun was developed to produce powerful light cruisers.
It was the first 3-gun turret with excellent range, fire rate, and operability.
It was later adopted as secondary guns of the Yamato-class battleships.
It is a masterpiece that can also be used for anti-air.


Main GunsSmall Caliber Main GunMedium Caliber Main GunLarge Caliber Main Gun are the main armement 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).


How To Obtain


Stock equipment of: MogamiMogami, OoyodoOoyodo


Used to improve: 15.5cm Triple Gun Mount15.5cm Triple Gun Mount, OTO 152mm Triple Rapid Fire Gun MountOTO 152mm Triple Rapid Fire Gun Mount, 15.5cm Triple Secondary Gun Mount Kai15.5cm Triple Secondary Gun Mount Kai, 15.5cm Triple Gun Mount Kai15.5cm Triple Gun Mount Kai

Updates History

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
+1 Added 2021-02-05
OoyodoOoyodo +2 Added 2021-02-05 [1]
  1. Firepower +1 prior to 2022-01-21


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
Medium Caliber Main Gun 15.5cm Triple Gun Mount (Main) 0 10 90 120 0 2/2 2/3 - X X X X X M M Mogami
6 2/3 2/4 1xRedGunMedium.png
10 - - -
0 {{{Fuel:2}}} {{{Ammo:2}}} {{{Steel:2}}} {{{Baux:2}}} 2/2 2/3 - O O X X X O O Ooyodo Ooyodo can upgrade this into 15.5cm Triple Gun Mount Kai (Main).
6 2/3 2/4 1xRedGunMedium.png
10 8/12 4/8 2xRedGunMedium.png
1xItem Icon New Model Gun Mount Improvement Material.png
Improvement Improved effects
Medium 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 1.00 1.41 1.73 2.00 2.23 2.44 2.64 2.82 3.00 3.16


Equipped by Mogami-class cruisers before they were converted into heavy cruisers by swapping their gun into 20.3cm turrets. The Mogami-class was designed as a heavy cruiser, but the naval treaty at the time defined cruiser types with main gun caliber so it is a sort of regulation loophole. The other ships that also equip this are the Yamato-class Battleship and the Oyodo-class Light Cruiser.

See Also

15.5 cm/60 3rd Year Type naval gun