Type 2 Depth Charge Kai 2

[Edit] Type 2 Depth Charge Kai 2 No.488 二式爆雷改二
Depth Charge Effects: +1 +8 +1 +1 Scrap value: 1 4 1 (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

対潜水艦に使用する増加爆雷装備です。
装填爆薬の改良、爆発深度調整幅の拡大、誘爆対策など、爆雷は戦訓を踏まえ、実用的に大きく改良されています。
駆逐艦や海防艦などに爆雷投射機やソナー類などの対潜装備とともに装備することで、対潜能力の向上が図れます。
一部改装駆逐艦で、さらに高い運用性を発揮します。

A supplementary depth charge for anti-submarine use.
Using lessons learned in combat, these depth charges have been upgraded with a larger explosive charge, wider operational depth, and resistance to secondary explosions.
You can improve the anti-submarine strength of destroyers and coastal defense ships by equipping this along with depth charge projectors and sonars.
It has even greater capabilities on certain remodeled destroyers.

Mechanics

Depth Charges are one of the main equipment used for ASW, 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

From limited-time quest: 2301 D1 (choice)

Ranking reward for:

• Nov 2022: 1-5 (★+9), 6-20 (★+7), 21-100 (★+5), 101-500 (★+3)

Updates History

• 2022-12-31: Implemented
• 2023-01-20: Became improvable

Fit Bonuses

Type 2 Depth Charge Kai 2 Equipment Bonuses
Ship	Extra Requirement									Note
Shigure Kai Ni/San	(★0-2)				+6			+2	+5
	(★3-4)				+6			+2	+6
	(★5-6)				+7			+2	+6
	(★7)				+7			+3	+6
	(★8)				+7			+3	+7
	(★9)				+8			+3	+7
	(★MAX)				+9			+3	+7
Shigure Kai Yukikaze Kai /Ni / Dan Yang Isokaze B Kai Hamakaze B Kai	(★0-4)				+3			+1	+2
	(★5-6)				+4			+1	+2
	(★7-8)				+4			+1	+3
	(★9)				+4			+2	+3
	(★MAX)				+5			+2	+3
Ushio Kai Ni Hibiki Kai Hatsushimo Kai Ni Shigure Base Suzutsuki Kai Fuyutsuki Kai	(★0-4)				+2				+1
	(★5-6)				+3				+1
	(★7-8)				+3				+2
	(★9)				+3			+1	+2
	(★MAX)				+4			+1	+2
Fusou Kai Ni Yamashiro Kai Ni Yahagi Kai Ni /B	(★0-4)				+1
	(★5-6)				+2
	(★7-8)				+2				+1
	(★9)				+2			+1	+1
	(★MAX)				+3			+1	+1
Other Imperial Japanese NavyKamikaze-class Mutsuki-class Fubuki-class Ayanami-class Akatsuki-class Hatsuharu-class Shiratsuyu-class Asashio-class Kagerou-class Yuugumo-class Akizuki-class Shimakaze-class Matsu-class DD Shimushu-class Etorofu-class Hiburi-class Ukuru-class Type D Kaiboukan	-				+1				+1

Improvement

Type	Name	★	Resource							Day							2nd Ship	Note
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	Type 2 Depth Charge Kai 2	0	24	140	10	90	6/7	3/4	1x	X	X	X	X	X	S	X	Shigure Kai Ni
		6					8/10	5/7	2x
		10					-	-	-

Improvement effects
DCR	1★	2★	3★	4★	5★	6★	7★	8★	9★	Max★
	0.67	0.94	1.15	1.33	1.49	1.63	1.76	1.89	2.00	2.11