HF/DF + Type144/147 ASDIC

HF/DF + Type144/147 ASDIC No.262 HF/DF + Type144/147 ASDIC
Sonar Effects: +2 +3 +15 +2 Scrap Value: 1 6
Development
Craftable	Improvable
Refittable Class
Coastal Defense Ship	Destroyer
Light Cruiser	Torpedo Cruiser
Heavy Cruiser	Aviation Cruiser
Battleship	Aviation Battleship
Fast Battleship	Light Carrier
Standard Carrier	Armored Carrier
Seaplane Tender	Submarine Tender
Submarine	Submarine Carrier
Repair Ship	Training Cruiser
Fleet Oiler	Amphibious Assault Ship

Introduction

紅茶の国で開発された対潜探知システム「ASDIC」。その改良発展型です。対潜探知技術の蓄積と144型と147型の複合装備により、敵潜探知精度をさらに向上させています。敵潜の発する無線波を捉える「短波方向探知機」と組み合わせて運用することで、総合的な対潜作戦能力は大きく向上しました。

The anti-submarine detection system developed in the Country of Tea, ASDIC. This is an improved model. By combining the anti-submarine detection technologies present in the Type 144 and 147, it is able to detect enemy submarines with more accuracy. Operating in conjunction with a "Short Wave Direction Finder" that detects raido waves from enemy submarines, the all round capability to detect enemy subs is greatly improved.

Notes

ASW Damage Synergy
Small Small Sonars	Type 93 Passive Sonar Type 4 Passive Sonar Type 3 Active Sonar Type 3 Active Sonar Kai Type124 ASDIC Type144/147 ASDIC HF/DF + Type144/147 ASDIC
Large Large Sonars	Type 0 Passive Sonar
DCP Depth Charge Projectors (DCP)	Type 94 Depth Charge Projector Type 3 Depth Charge Projector Type 3 Depth Charge Projector (Concentrated Deployment) Prototype 15cm 9-tube ASW Rocket Launcher RUR-4A Weapon Alpha Kai AP Mk.32 ASW Torpedo (Mk.2 Thrower) AP
DCR Depth Charge (Racks) (DCR)	Type 95 Depth Charge AP Type 2 Depth Charge AP Lightweight ASW Torpedo (Initial Test Model) AP Hedgehog (Initial Model) AP
Other ASW Mortars	Type 2 12cm Mortar Kai Type 2 12cm Mortar Kai (Concentrated Deployment)
ASW Damage Modifiers
+	1.15x
DCP + DCR	1.1x
Large + DCP + DCR	1.265xLarge + = 1.15x DCP + DCR = 1.1x 1.15 * 1.1(1 + 0.1) = 1.265x
Small + DCP + DCR	1.4375xSmall + DCP / Other = 1.15x Small + DCR = 1.15x DCP + DCR = 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 affected equipment are: DCR: Type 95 Depth Charge, Type 2 Depth Charge, Lightweight ASW Torpedo (Initial Test Model), Hedgehog (Initial Model), DCP: RUR-4A Weapon Alpha Kai, Mk.32 ASW Torpedo (Mk.2 Thrower). 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 stat of the applicable equipment, Visible bonuses and Improvements are not counted here. [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

Event reward for:

• Fall 2019 Event E-2: Hard
• Fall 2021 Event E-2: Hard (★+2)
• Winter 2022 Event E-5: Hard (★+3)

Ranking reward for:

• Aug 2017: 1-5, 6-20
• May 2020: 1-5

Updates History

• 2017-09-28: Implemented as ranking reward