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15.5cm Triple Secondary Gun Mount

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No.12 15.5cm三連装副砲
YellowGun.png Secondary Gun
Effects: Firepower+7 AA+3 Accuracy+2 RangeMedium
Scrap value: Ammo 2 Steel 5 (Buildable)
Alternate names
Card name:
15.5cm Triple Gun Mount (Secondary Gun)
15.5cm三連装砲（副砲）

15.5cm Triple Gun Mount (Secondary Gun)/15.5cm三連装砲（副砲） (15.5せんちさんれんそうほう（ふくほう）)

Equipment Character 15.5cm Triple Secondary Gun Mount.png

Equipment Item 15.5cm Triple Secondary Gun Mount.png

Equipment Full 15.5cm Triple Secondary Gun Mount.png

Refittable Ship Types
Fast Battleship Battleship
Aviation Battleship Standard Aircraft Carrier
Armored Carrier Light Carrier
Heavy Cruiser Aviation Cruiser
Light Cruiser Torpedo Cruiser
Training Cruiser Destroyer
Coastal Defense Ship Submarine
Aircraft Carrying Submarine Seaplane Tender
Fleet Oiler Submarine Tender
Repair Ship Amphibious Assault Ship

Introduction

巡洋艦の主砲だったものを、戦艦の副砲として活用しました。
「大和」型に搭載され、対空戦も可能な、性能・運用ともに優秀な戦艦副砲となりました。
砲塔部の装甲が薄いのが玉に傷で、諸説ありますが「大和」型の唯一の弱点という指摘もありました。

Although designed to be a part of the cruiser's main battery, it saw a more practical use as the battleship's secondary armament.
The "Yamato-class" was designed with this, for potential use as an anti-aircraft gun, however, its combined ability and performance were outstanding enough to be used as the battleship's secondary armament.
However, the turret section's armor was very thin, resulting in various rumors about it being the Yamato-class' Achilles' heel when pointed out.

Mechanics

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).

Can be equipped in the RE of certain ships.

Notes

How To Obtain

Buildable

Stock equipment of: Haruna KaiHaruna Kai, Hiei KaiHiei Kai, Kirishima KaiKirishima Kai, Kongou KaiKongou Kai, MusashiMusashi, YamatoYamato

From quest: Cy9 (x2, choice)

Uses

Used to improve: 15.5cm Triple Secondary Gun Mount15.5cm Triple Secondary 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, 15.2cm Triple Gun Mount15.2cm Triple Gun Mount

Updates History

Fit Bonuses

15.5cm Triple Secondary Gun Mount Equipment Bonuses
Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Accuracy Evasion Note
Yamato-classYamato
Musashi 		- +1 +1 +1
+ 15m Duplex Rangefinder + Type 21 Radar Kai 215m Duplex Rangefinder + Type 21 Radar Kai 2 OR 15m Duplex Rangefinder Kai + Type 21 Radar Kai 2 + Skilled Fire Direction Center15m Duplex Rangefinder Kai + Type 21 Radar Kai 2 + Skilled Fire Direction Center +1 +1 One-time

Improvement

YellowGun.png 15.5cm Triple Secondary Gun Mount

Improvement → Conversion
★ Improvement
Level 		0~5 6~9
Equipment Card 15.5cm Triple Secondary Gun Mount Kai.png
15.5cm Triple Secondary Gun Mount Kai
Development material Consumed 2/2 2/3 8/12
Improvement material Consumed 2/3 2/4 4/8
Equipment
Consumed 		- Equipment Card 15.5cm Triple Secondary Gun Mount.png Equipment Card 15.5cm Triple Secondary Gun Mount.pngx2
Items
Consumed 		- Item Icon New Model Gun Mount Improvement Material.png
Resources Fuel10 Ammunition90 Steel120 Bauxite0
Ship Helper Conversion
Ship Banner Yamato.png
Yamato/Kai/Ni/Juu
Equipment Card 15.5cm Triple Secondary Gun Mount Kai.png
15.5cm Triple Secondary Gun Mount Kai
Mon Tue Wed Thu Fri Sat Sun
Ship Banner Musashi.png
Musashi
Mon Tue Wed Thu Fri Sat Sun
Ship Banner Musashi Kai.png
Musashi Kai
Mon Tue Wed Thu Fri Sat Sun
Ship Banner Musashi Kai Ni.png
Musashi Kai Ni
Mon Tue Wed Thu Fri Sat Sun
Improvement Improved effects
Secondary Gun 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★
Firepower 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
Night Battle Power 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0
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

Trivia

According to here, the Mogami-class and eventually the Tone-class were supposed to have the gun, but when the practical use was seen in Yamato-class and Oyodo, it then remained as part of the battleship's main weaponry. One factor for the gun design change was that the gun was supposed to have an additional 75 degrees for AA firing on top of the main 45 degrees for general firing, but this was switched to +55 degrees for the reasoning that it was too inefficient.

The "Achilles' heel" portion refers to the relatively inferior armor thickness of the turret part, albeit being colossally improved compared to casemate guns of other Japanese battleships (Fuso-class to Nagato-class).

See Also

15.5cm/60 3rd Year Type Naval Gun


v · e
Equipment List
Gallery • By Stats • Equipment Types & Icons • Development • Improvement
 
Main Guns
Foreign
10cm Twin HA Gun Mount (+ AAFD • Kai + AAFD Kai) • 12cm Single HA Gun Mount (Model E • Model E Kai) • 12.7cm HA Gun Mount (Single LM • Twin LM • Single Kai 2 • Twin Kai 2) • 12.7cm Twin HA Gun Mount (Model A Kai 3 + AAFD • Model B Kai 4 + AAFD)
Foreign
14 cm
15-15.5 cm/6 inch
20-20.3 cm/8 inch
30.5-32 cm
305mm/46 Gun Mount (Twin • Triple) (Ita) • 320mm/44 Gun Mount (Twin • Triple) (Ita) • 30.5cm Triple Gun Mount (Kai) (Sov)
35.6 cm/14 inch
38-38.1 cm
41 cm/16 inch
41cm Twin Gun Mount (Kai 2) • 41cm Triple Gun Mount (Proto • Kai • Kai 2) • 16inch Twin Gun Mount (Mk.I • Mk.V • Mk.VIII Kai) (US) • 16inch Triple Gun Mount (Mk.6 • Mk.6 + GFCS • Mk.6 mod.2 • Mk.7 • Mk.7 + GFCS) (US) • 16inch Triple Gun Mount (Mk.I • Mk.I + AFCT Kai • Mk.I Kai + FCR Type 284) (UK)
46 cm
 
Secondary Guns
Surface
Foreign
 
Anti-Air
 
Torpedo Weapons
53cm Twin Torpedo Mount • 53cm Bow O2 Torpedoes • 61cm Torpedo Mount (Triple • Triple O2 • Triple O2 LM • Quad • Quad O2 • Quad O2 LM • Quintuple O2 • Proto Sext O2) • 533mm Quint Torpedo Mount (Initial Model • Late Model) (US) • 533mm Triple Torpedo Mount (Model 53-39) (Sov)
Late Model Bow Torpedo Mount (4 tubes) (+ Skilled Sonar Personnel) • Late Model Bow Torpedo Mount (6 tubes) (+ Skilled Sonar Personnel) • Submarine 53cm Bow Torpedo Mount (8 tubes) (Late Model) • Prototype FaT Type 95 Oxygen Torpedo Kai (IJN/Ger) • 21inch 4-tube Bow Torpedo Launcher (Initial Model • Late Model) (US) • 21inch 6-tube Bow Torpedo Launcher (Initial Model • Late Model) (US) • Submarine 4-tube Stern Torpedo Launcher (Initial Model • Late Model) (US)
Kouhyouteki (Type A • Type C • Type D Kai)
 
Carrier-Based Planes
Other (IJN)
Type 96 (Kai) • Shiden (Kai 2 • Kai 4) • Reppuu (Prototype LM • Model 11 • 601 • Kai • Kai 2 • Kai 2 (CD1/Skilled)) • Prototype Jinpuu • Shinden Kai
Foreign
Bf 109 T Kai (IJN/Ger) • Fw190 (T Kai • A-5 Kai (Skilled)) (IJN/Ger) • Reggiane (2001 OR Kai • 2005 Kai) (IJN/Ita) • Wildcat (F4F-3 • F4F-4) (US) • Hellcat (F6F-3 • F6F-5) (US) • XF5U (US) • FR-1 Fireball (US) • Fulmar (UK) • Seafire Mk.III Kai (UK) • Corsair Mk.II (Ace) (UK/US)
Reppuu Kai 2 Model E (CD1/Skilled) • Hellcat (F6F-3N • F6F-5N) (US) • F4U-2 Night Corsair (US)
Foreign
Ju.87C (Kai • Kai 2 KMX • Kai 2 KMX/Skilled) (IJN/Ger) • Re.2001 CB Kai (IJN/Ita) • SBD (Yellow Wings • VB-2 Bomber Squad) (US) • SBD-5 (US) • Helldiver (SB2C-3 • SB2C-5) (US) • Corsair (F4U-1D (US) • F4U-4 (US) • AU-1 (US) • F4U-7 (Fr/US)) • FM-2 (US) • Skua (UK)
Type 97 (Skilled • 931 • 931/Skilled • Tomonaga • Murata) • Tenzan (601 • 931 • Model 12A • Tomonaga • Murata) • Ryuusei (Kai • Kai Skilled • 601 • CD1 • CD1/Skilled)
Foreign
Re.2001 G Kai (IJN/Ita) • TBD (Yellow Wings) (US) • TBF (US) • Swordfish (Mk.II Skilled • Mk.III Skilled) (UK) • Barracuda (Mk.II • Mk.III) (UK) • Mosquito TR Mk.33 (UK)
Type 97 Model E (Skilled) • Tenzan Model 12A Kai (Skilled  • Murata) • TBM-3D (US) • TBM-3W+3S (JMSDF/US)
 
Land-Based Planes
Toukai (Proto • 901)
"Army"
Type 1 Fighter Hayabusa (Model II • Model II (64) • Model IIIA • Model IIIA (54)) (IJA) • Type 3 Fighter Hien (Model 1D • 244) (IJA) • Type 4 Fighter Hayate (IJA) • Type 2 Two-seat Fighter Toryuu (Model C) (IJA) • Ki-96 (IJA) • Fw 190 D-9 (Ger) • Spitfire (Mk.I • Mk.V • Mk.IX Skilled) (UK)
"Navy"
Raiden • Shiden (Model 11 • Kai • Kai 343/301 • Kai 343/407 • Kai 343/701) • Type 0 Fighter (Model 22 (251) • Model 21 (Tainan) • Model 32 (Tainan)) • Reppuu Kai (352/Skilled)
Jets
Canard
HA
Me 163B (Ger) • Shuusui (Proto)
 
Seaplanes
Type 98 Reconnaissance Seaplane (Night Recon) • Type 0 Reconnaissance Seaplane (11B Kai Night Recon • 11A Kai 2)  • Loire 130M (Kai Skilled) (Fr) • Walrus (UK) • Sea Otter (UK)
Zuiun (631 • 634 • 634/Skilled • Model 12 • Model 12 (634) • Kai 2 (634) • Kai 2 (634/Skilled)) • Seiran (Prototype • 631) • Swordfish (Mk.III Kai • Mk.III Kai Skilled) (UK/Swe) • Laté 298B (Fr)
Type 2 Kai (Skilled) • Kyoufuu (Kai • Kai 2) • Ro.44 Seaplane Fighter (bis) (Ita)
 
Radars
 
Anti-Submarine Warfare
Ka Type Observation Autogyro (IJA) • O Type Observation Autogyro (Kai • Kai 2) (IJA) • S-51J (Kai) (JMSDF/US)
 
Miscellaneous
Night Battle Aid
Facility & Crew
Consumables
Others
Unreleased & removed
HA - High-Angle or High-Altitude; DP - Dual-Purpose; LM - Late Model; CD - Concentrated Deployment or Carrier Division
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