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16inch Mk.I Twin Gun Mount

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No.330 16inch Mk.I連装砲
RedGunHeavy.png Large Caliber Main Gun (??)
Effects: Firepower+20 Armor+1 Accuracy+1 Evasion+1 RangeLong
Scrap value: Ammo 12 Steel 20 (Unbuildable)

Equipment Card 16inch Mk.I Twin Gun Mount.png

Equipment Character 16inch Mk.I Twin Gun Mount.png

Equipment Item 16inch Mk.I Twin Gun Mount.png

Equipment Full 16inch Mk.I 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 American-made members of the Big 7, the Colorado-class, employed these early 16 inch main gun turrets as their standard armament. These three battleships stood next to the Japanese Nagato and Mutsu as well as the Nelson-class of the Country of Black Tea, as the Big Seven. The name ship, Colorado, as well as her sisters that were once destroyed at Pearl Harbour and later refloated, will once again devote themselves to the war in the Pacific Ocean.


Main GunsSmall Caliber Main GunSmall 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: ColoradoColorado (x2), MarylandMaryland (x2)

Ranking reward for:

  • Mar 2019: 1-5, 6-20, 21-100, 101-500

Updates History

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
Nagato-class Kai NiNagato Kai Ni
Mutsu Kai Ni

Nelson KaiNelson Kai




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 16inch Mk.I Twin Gun Mount 0 30 350 480 0 3/4 2/3 1xRedGunHeavy.png Colorado Upgrades to 16inch Mk.V Twin Gun Mount
6 6/8 3/6 2xRedGunHeavy.png
10 16/24 6/8 3xRedGunHeavy.png
1xItem Icon New Model Gun Mount Improvement Material.png
Improvement Improved effects
Large Caliber Main Gun 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★
Firepower 1.50 2.12 2.59 3.00 2.35 3.67 3.96 4.24 4.50 4.74
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

See Also

16"/45 caliber gun