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Prototype 15cm 9-tube ASW Rocket Launcher

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Prototype 15cm 9-tube ASW Rocket Launcher

No.288 試製15cm9連装対潜噴進砲

Depth Charges Depth Charge

Effects: Accuracy+1 Anti-Submarine+15

Scrap Value: Ammunition9 Steel3 Bauxite2

Equipment Card Prototype 15cm 9-tube ASW Rocket Launcher.png

Equipment Character Prototype 15cm 9-tube ASW Rocket Launcher.png

Equipment Item Prototype 15cm 9-tube ASW Rocket Launcher.png

Equipment Full Prototype 15cm 9-tube ASW Rocket Launcher.png

Development
CraftableImprovable
Refittable Class
Coastal Defense ShipDestroyer
Light CruiserTorpedo Cruiser
Heavy CruiserAviation Cruiser
BattleshipAviation Battleship
Fast BattleshipLight Carrier
Standard CarrierArmored Carrier
Seaplane TenderSubmarine Tender
SubmarineSubmarine Carrier
Repair ShipTraining Cruiser
Fleet OilerAmphibious Assault Ship

Introduction

爆雷投下軌条は艦の後方、従来型の三式爆雷投射機は艦の舷側方向に爆雷を投射可能でしたが、艦首方向にも爆雷を投射可能な新対潜装備が本噴進爆雷砲です。
まだ、試作段階で欧米の同種兵装に比べて発展途上ではありますが、和製ヘッジホッグに発展する可能性もあった兵装です。

Depth charge launchers on ships' sterns and existing Type 3 depth charge projectors could throw depth charges to the sides of a ship, but this rocket launcher could throw depth charges ahead of the ship's bow as well.
This system was still a mere prototype in comparison to Western developments of similar weaponry, but it had the potential to become something akin to a Japanese-made Hedgehog.

Notes

ASW Damage Synergy
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
SONARLarge Large Sonars
Equipment Card Type 0 Passive Sonar.png
Type 0 Passive Sonar
Depth ChargesDCP 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 ChargesDCR 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
Depth ChargesOther 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
SONAR + Depth Charges 1.15x
Depth ChargesDCP + Depth ChargesDCR 1.1x
SONARLarge + Depth ChargesDCP + Depth ChargesDCR 1.265xSONARLarge + Depth Charges = 1.15x
Depth ChargesDCP + Depth ChargesDCR = 1.1x

1.15 * 1.1(1 + 0.1) = 1.265x
SONARSmall + Depth ChargesDCP + Depth ChargesDCR 1.4375xSONARSmall + Depth ChargesDCP / Depth ChargesOther = 1.15x
SONARSmall + Depth ChargesDCR = 1.15x
Depth ChargesDCP + Depth ChargesDCR = 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

From limited-time quests: Su09

Event reward for:

Ranking reward for:

  • Nov 2021: 1-5 (★+5), 6-20 (★+4), 21-100 (★+3), 101-500 (★+2)


Updates History

  • 2018-05-15: Implemented
  • 2020-01-14: Visible bonuses added

Fit Bonuses

Ship Extra Requirement Firepower Torpedo Attack Anti-Air Anti-Submarine Warfare Line of Sight Armor Evasion Note
Isuzu Kai NiIsuzu Kai Ni
Naka Kai NiNaka Kai Ni
Yura Kai NiYura Kai Ni
Yukikaze Kai NiYukikaze Kai Ni
+2 +1
Yuubari Kai Ni DYuubari Kai Ni D +1 +3 +2
Noshiro Kai NiNoshiro Kai Ni +4 +1
Katori-classKatori
Kashima
+3 +2 Added 2021-03-01

See Also