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Type 93 Passive Sonar

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No.46 九三式水中聴音機
Sonar.png Small Sonar
Effects: ASW+6 Accuracy+1
Scrap value: Steel 1 Bauxite 1 (Buildable)

Equipment Card Type 93 Passive Sonar.png

Equipment Character Type 93 Passive Sonar.png

Equipment Item Type 93 Passive Sonar.png

Equipment Full Type 93 Passive Sonar.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

Introduction

対潜兵装です。
いわゆるパッシブソナーです。性能は残念ながら、あまり良くはありません。
でも、あるとないとでは大違い!対潜作戦のお供に、ぜひどうぞ!

An anti-submarine weapon, also known as the passive SONAR. It may not perform its job well, but it's better than nothing.
Please use it for anti-submarine operations!

Notes

ASW Damage Synergy
Small SONARSmall Small Sonars
Equipment Card Type 93 Passive Sonar.png
Type 93 Passive Sonar
Equipment Card Type 4 Passive Sonar.png
Type 4 Passive Sonar
Equipment Card Type 3 Active Sonar.png
Type 3 Active Sonar
Equipment Card Type 3 Active Sonar Kai.png
Type 3 Active Sonar Kai
Equipment Card Type124 ASDIC.png
Type124 ASDIC
Equipment Card Type144 147 ASDIC.png
Type144/147 ASDIC
Equipment Card HF DF + Type144 147 ASDIC.png
HF/DF + Type144/147 ASDIC
Large SONARLarge Large Sonars
Equipment Card Type 0 Passive Sonar.png
Type 0 Passive Sonar
Depth Charge ProjectorDCP Depth Charge Projectors (DCP)
Equipment Card Type 94 Depth Charge Projector.png
Type 94 Depth Charge Projector
Equipment Card Type 3 Depth Charge Projector.png
Type 3 Depth Charge Projector
Equipment Card Type 3 Depth Charge Projector (Concentrated Deployment).png
Type 3 Depth Charge Projector (Concentrated Deployment)
Equipment Card Prototype 15cm 9-tube ASW Rocket Launcher.png
Prototype 15cm 9-tube ASW Rocket Launcher
Equipment Card RUR-4A Weapon Alpha Kai.png
RUR-4A Weapon Alpha Kai
AP
Equipment Card Mk.32 ASW Torpedo (Mk.2 Thrower).png
Mk.32 ASW Torpedo (Mk.2 Thrower)
AP
Depth Charge RacksDCR Depth Charge (Racks) (DCR)
Equipment Card Type 95 Depth Charge.png
Type 95 Depth Charge
AP
Equipment Card Type 2 Depth Charge.png
Type 2 Depth Charge
AP
Equipment Card Lightweight ASW Torpedo (Initial Test Model).png
Lightweight ASW Torpedo (Initial Test Model)
AP
Equipment Card Hedgehog (Initial Model).png
Hedgehog (Initial Model)
AP
ASW MortarOther ASW Mortars
Equipment Card Type 2 12cm Mortar Kai.png
Type 2 12cm Mortar Kai
Equipment Card Type 2 12cm Mortar Kai (Concentrated Deployment).png
Type 2 12cm Mortar Kai (Concentrated Deployment)
ASW Damage Modifiers [math]\displaystyle{ \text{Mod}_\text{synergy} }[/math]
SONAR + Depth Charges 1.15x
Depth Charge ProjectorDCP + Depth Charge RacksDCR 1.1x
Large SONARLarge + Depth Charge ProjectorDCP + Depth Charge RacksDCR 1.265xLarge SONARLarge + Depth Charges = 1.15x
Depth Charge ProjectorDCP + Depth Charge RacksDCR = 1.1x

1.15 * 1.1(1 + 0.1) = 1.265x
Small SONARSmall + Depth Charge ProjectorDCP + Depth Charge RacksDCR 1.4375xSmall SONARSmall + Depth Charge ProjectorDCP / ASW MortarOther = 1.15x
Small SONARSmall + Depth Charge RacksDCR = 1.15x
Depth Charge ProjectorDCP + Depth Charge RacksDCR = 1.1x

1.15 * 1.25(1 + 0.1 + 0.15) = 1.4375
Armor Penetration
Indepentant of synergies, some equipment provides additional armor penetration to ASW attacks.

The flat armor penetration value is calculated as follows:

  • [math]\displaystyle{ \text{Pen} = \sum\limits_{\text{Equipment}} \Big( \sqrt{\text{ASW}_\text{Equipment} - 2} + \text{Mod}_\text{ship} \Big) }[/math]
  • With:
    • [math]\displaystyle{ \text{ASW}_\text{Equipment} }[/math] the base ASW Anti-Submarine Warfare stat of the applicable equipment,
    • [math]\displaystyle{ \text{Mod}_\text{ship} }[/math] being 1 for DE, 0 otherwise,
  • Armor penetration from equipment stacks,
  • The final armor of the targetted submarine cannot go below 1.

How To Obtain

Buildable

Stock equipment of: AsashimoAsashimo, Fukae KaiFukae Kai, Hatakaze KaiHatakaze Kai, Hayanami KaiHayanami Kai, Hiburi KaiHiburi Kai, Hirato KaiHirato Kai, Katori KaiKatori Kai, Kishinami KaiKishinami Kai, Matsukaze KaiMatsukaze Kai, Nowaki KaiNowaki Kai, Shikinami Kai NiShikinami Kai Ni, Shimakaze KaiShimakaze Kai, Tanikaze KaiTanikaze Kai, Tsushima KaiTsushima Kai, Umikaze Kai NiUmikaze Kai Ni (★+5), Urakaze D KaiUrakaze D Kai, Urakaze KaiUrakaze Kai, Yamakaze KaiYamakaze Kai, Yukikaze KaiYukikaze Kai

From quest: B42, B45, D42 (x3, choice), D43 (x2, choice)

From limited-time quest: SB03

Event reward for:

Uses

Used to improve: Type 93 Passive SonarType 93 Passive Sonar, Type 4 Passive SonarType 4 Passive Sonar, Type 0 Passive SonarType 0 Passive Sonar

Used by quest: F50, F98, F99, F103

Updates History

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
Katori-classKatori
Kashima
+2 +3 Non-stackable with itself, Type 3 Active Sonar, or Type 4 Passive Sonar

Akashi's Improvement Arsenal

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
SONAR Type 93 Passive Sonar 0 10 0 30 30 2/2 1/2 - S
K
 
X X X S
 
I
S
K
I
S
K
 
Shigure Kai NiShigure Kai Ni
Katori KaiKatori Kai
Isuzu Kai NiIsuzu Kai Ni
Upgrades to Type 4 Passive SonarType 4 Passive Sonar.
6 3/4 2/3 1xSonar.png
10 10/20 6/12 2xSonar.png
0 {{{Fuel:2}}} {{{Ammo:2}}} {{{Steel:2}}} {{{Baux:2}}} 2/2 1/2 - Y
 
 
I
X X X Y
 
Y
 
YuubariYuubari
Isuzu Kai NiIsuzu Kai Ni
Upgrades to Type 3 Active SonarType 3 Active Sonar ★+3.
6 3/4 2/3 1xSonar.png
10 6/9 3/5 2xSonar.png

See Also