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Type 91 Armor Piercing Shell

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No.36 九一式徹甲弾
RedAmmo.png Armor Piercing Shell
Effects: Firepower+8 Accuracy+1
Scrap value: Ammo 3 Steel 9 (Buildable)

Equipment Card Type 91 Armor Piercing Shell.png

Equipment Character Type 91 Armor Piercing Shell.png

Equipment Item Type 91 Armor Piercing Shell.png

Equipment Full Type 91 Armor Piercing Shell.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

遠距離砲撃戦における秘密兵器「九一式徹甲弾」。
海中突入後急激に向きを変え、魚雷のように敵艦水線下に突き進み、喫水下を破砕する特殊徹甲弾です。
水中弾効果を高める形状設計のため、空気抵抗も減少して射程も延伸します。
戦艦・航空戦艦等が使用可能。

A long-range artillery secret weapon known as the "Type 91 Armor-Piercing Shell".
This type of ammunition will spin rapidly after exiting the gun's barrel, enter the water, and penetrate the target's armor below the waterline like a torpedo, crushing the hull of the ship.
The shell's shape enhances underwater penetration while also improving the range by decreasing air resistance.
Available for Battleship, Aviation Battleship, etc...

Mechanics

Armor-Piercing Shell AP Shells are mainly used for increasing the general damage potential of batleships, with further bonuses for Artillery Spotting and Special Attacks.

  • They also play some Anti-Installation role, notably against "Hard-Skinned Installations".

Notes

How To Obtain

Buildable:

Best craft recipe Fuel10 Ammunition30 Steel90 Bauxite10 HeavyDoes NOT include CAV/BBV
Ships with special crafting will have
reduced rates of other specific equipmentSecretary: Category Heavy
Ship Types included:
CA, FBB, BB or AR

From quest: B129 (x2, choice)

From limited-time quest: SB41 (x3, choice)

Uses

Used to improve: Type 91 Armor Piercing ShellType 91 Armor Piercing Shell, Type 1 Armor Piercing ShellType 1 Armor Piercing Shell

Used by quest: Fm3

Updates History

Improvement

RedAmmo.png Type 91 Armor Piercing Shell

Improvement → Conversion
★ Improvement
Level 		0~5 6~9
Equipment Card Type 1 Armor Piercing Shell.png
Type 1 Armor Piercing Shell
Development material Consumed 2/3 3/5 6/9
Improvement material Consumed 1/1 1/2 4/9
Equipment
Consumed 		- Equipment Card Type 91 Armor Piercing Shell.png Equipment Card Type 91 Armor Piercing Shell.pngx3
Items
Consumed 		- -
Resources Fuel30 Ammunition150 Steel310 Bauxite10
Ship Helper Conversion
Ship Banner Hiei.png
Hiei
Equipment Card Type 1 Armor Piercing Shell.png
Type 1 Armor Piercing Shell
Mon Tue Wed Thu Fri Sat Sun
Ship Banner Hiei Kai Ni.png
Hiei Kai Ni/C
Mon Tue Wed Thu Fri Sat Sun
Ship Banner Kirishima.png
Kirishima/Kai/Ni/C
Mon Tue Wed Thu Fri Sat Sun
Improvement Improved effects
Armor-Piercing Shell 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

Trivia

This shell was derived from the Type 88 AP shell, and was available from 20.3 cm to 41 cm calibers.

See Also

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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