Type124 ASDIC

[Edit] Type124 ASDIC No.260 Type124 ASDIC
Small Sonar Effects: +11 +2 +1 Scrap value: 1 4 (Unbuildable)
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

早くから潜水艦との闘いを経験した紅茶の国の研究チーム、Anti-Submarine Detection Investigation Committeeで開発された対潜探知システムです。
「ASDIC」と呼ばれた同システム群は進化を重ね、今日のアクティブソナーへと発展していきます。
124型は大戦初期から運用されていた駆逐艦に搭載されました。

An anti-submarine detection system developed by the research team, Anti-Submarine Detection Investigation Committee, from the country of tea that had early experience fighting submarines.
The system called "ASDIC" would evolve into modern active sonar.
The Type 124 was mounted on destroyers at the start of the Great War.

Mechanics

Sonars are the main equipment used for ASW, being required to trigger most OASW, and greatly enhancing ASW Damage Synergy. Their main stat is "ASW" .

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 Type 2 Depth Charge Kai Ni AP
Other ASW Mortars	Type 2 12cm Mortar Kai Type 2 12cm Mortar Kai (Concentrated Deployment)
ASW Damage Modifiers: [math]\displaystyle{ \text{Mod}_\text{synergy} = {Mod}_\text{1} \times {Mod}_\text{2} }[/math]
[math]\displaystyle{ {Mod}_\text{1} }[/math]	+ (Any Sonar + Any Depth Charge)	1.15
[math]\displaystyle{ {Mod}_\text{2} }[/math]	DCP + DCR and NO Small	1.1
	Small + DCP + DCR	1.25
Examples
[math]\displaystyle{ \text{Mod}_\text{synergy} }[/math]	Small + DCP + DCR	1.4375[math]\displaystyle{ 1.15 \times 1.25 }[/math]
	Large + DCP + DCR	1.265[math]\displaystyle{ 1.15 \times 1.1 }[/math]
Armor Penetration
Indepentant of synergies, some equipment provides additional armor penetration to ASW attacks. The affected equipment are: DCR: Type 95 DC, Type 2 DC, Lightweight ASW Torpedo, Hedgehog, Type 2 DC K2 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, Note Armor penetration from equipment stacks, The final armor of the targetted submarine cannot go below 1.

Notes

How To Obtain

Stock equipment of: Jervis Kai

From limited-time quest: 21Su LB3 (x2, choice), SB25 (choice)

Ranking reward for:

• Aug 2017: 1-5, 6-20, 21-100, 101-500

Event reward for:

• Fall 2019 Event E-2: Easy
• Fall 2021 Event E-2: Easy (★+2)

Choice from 2020 Xmas present (★+3)

Updates History

• 2017-09-28: Implemented as ranking reward
• 2022-08-04: Became improvable and upgradeable to Type144/147 ASDIC

Improvement

Type	Name	★	Resource							Day							2nd Ship	Note
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	Type124 ASDIC	0	10	0	50	110	5/7	4/5	1x	Je	Ja	Ja	Ja	Je	Je	Je	Jervis Janus	Upgrades to Type144/147 ASDIC
		6					6/8	5/6	2x
		10					14/19	7/10	3x 1x 1x

Improvement effects
	1★	2★	3★	4★	5★	6★	7★	8★	9★	Max★
	0.75	1.06	1.29	1.50	1.67	1.83	1.98	2.12	2.25	2.37
	0.67	0.94	1.15	1.33	1.49	1.63	1.76	1.89	2.00	2.11
ASW	1.30	1.83	2.25	2.60	2.90	3.18	3.43	3.67	3.90	4.11
Torpedo	1.50	2.12	2.59	3.00	3.35	3.67	3.96	4.24	4.50	4.74