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15.2cm Single Gun Mount

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No.11 15.2cm単装砲
YellowGun.png Secondary Gun
Effects: Firepower+2 Accuracy+1 RangeMedium
Scrap value: Ammo 2 Steel 2 (Buildable)

Equipment Card 15.2cm Single Gun Mount.png

Equipment Character 15.2cm Single Gun Mount.png

Equipment Item 15.2cm Single Gun Mount.png

Equipment Full 15.2cm Single 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



Knocking down British-made gun, this weapon was utilized as secondary guns on the Kongo-class and the Fuso-class.
After the Ise-class the renewed, lightened variant of 14cm caliber was adopted.
Anti-air firing was impossible; during later modernizations, these guns either gave their way to anti-air weapons or were taken down for weight reduction.


Secondary GunsSecondary GunSecondary High-Angle GunSecLarge Secondary High-Angle GunSp_Sec serve a similar role to Main Guns. Their main stats are the "firepower" Firepower and "accuracy" Accuracy. They are notably required to trigger some weaker Artillery Spotting attacks as well as some Night Cut-Ins, notably the "Double Attack" (DA).


How To Obtain


Stock equipment of: FusouFusou, HarunaHaruna, HieiHiei, KirishimaKirishima, KongouKongou, YamashiroYamashiro


Used to improve: 15.2cm Single Gun Mount15.2cm Single Gun Mount, Bofors 15.2cm Twin Gun Mount Model 1930Bofors 15.2cm Twin Gun Mount Model 1930

Used by quest: F44

Updates History


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
Secondary Gun 15.2cm Naval Gun 0 10 60 90 0 2/2 1/2 - K
Kongou (base/Kai/Kai Ni C)Kongou
Kongou Kai
Kongou Kai Ni C

Kongou Kai NiKongou Kai Ni
Upgrades to 15.2cm Twin Gun Mount15.2cm Twin Gun Mount.
6 2/3 2/3 1xYellowGun.png
10 3/4 3/5 2xYellowGun.png
Improvement Improved effects
Secondary 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


The 15.2cm guns were originally designed by Vickers as secondary weapons for the battlecruiser Kongo, which was built in Britain by Vickers-Armstrong (Barrow). The Japanese version was designed by Engineer Hata Chiyokichi and adopted in 1908. In the Japanese Navy, Vickers-built guns were designated as Mark II while those built in Japan were designated as Mark III. The design itself was outstanding at its time, but 15.2 cm shell proved too heavy for Japanese sailors and had inferior firing rate (circa 6rpm), thus the lighter variant of 14cm caliber was later designed in-house.

When the 'Kongo-class was modernized in the 1930s, these guns were removed and reused on the Agano-class light cruisers in new twin mountings. There are also some coastal defense batteries at Guam were also equipped with these weapons.

This type of gun comes in a casemate mounting and would be mounted in an armored room along the side of the ship known as a casemate. Casemates too close to the waterline or too close to the bow of the ship were prone to flooding thus making the gun ineffective.

See Also

15 cm/50 41st Year Type