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6inch Mk.XXIII Triple Gun Mount

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No.399 6inch Mk.XXIII三連装砲
RedGunMedium.png Medium Caliber Main Gun
Effects: Firepower+7 AA+2 Armor+1 Accuracy+1 Evasion+1 RangeMedium
Scrap value: Ammo 2 Steel 4 Bauxite 1 (Unbuildable)

Equipment Card 6inch Mk.XXIII Triple Gun Mount.png

Equipment Character 6inch Mk.XXIII Triple Gun Mount.png

Equipment Item 6inch Mk.XXIII Triple Gun Mount.png

Equipment Full 6inch Mk.XXIII Triple Gun Mount.png

Refittable Ship Types
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



A gun for large-sized light cruisers developed in the country of tea under the London Naval Treaty.
In order to get around the displacement limits set by the Treaty, these 6 inch triple-mounted guns were deployed as the main guns of heavy-cruiser-sized light cruisers.
It was deployed on many light cruisers from the country of tea, such as the Town-class light cruiser.


Main GunsSmall Caliber Main GunMedium Caliber Main GunLarge Caliber Main Gun are the main armament 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: Sheffield KaiSheffield Kai, SheffieldSheffield

Ranking reward for:

  • Oct 2020: 1-5 (★+6), 6-20 (★+5), 21-100 (★+4), 101-500 (★+3)

Updates History

  • 2020-11-26: Implemented as ranking reward

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
Town-classSheffield (★0-2) +1 +2
(★3-4) +2 +2
(★5-MAX) +3 +2


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 Day 1.00 1.41 1.73 2.00 2.23 2.44 2.64 2.82 3.00 3.16
Accuracy Night 1.30 1.84 2.25 2.60 2.91 3.18 3.44 3.68 3.90 4.11

See Also