Type 94 Depth Charge Projector

[Edit] Type 94 Depth Charge Projector No.44 九四式爆雷投射機
Depth Charge Effects: +5 Scrap value: 2 1 1 (Buildable)
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。
もっとも標準的な爆雷投射機です。
駆逐艦・海防艦等の小型艦艇に対潜水艦用火力として装備されました。
若干旧式化しつつありますが、敵潜を発見さえできれば、その威力は十分です。

The standard depth charge of the fleet, it's mainly used by destroyers, coastal defense ships, or other smaller ships for anti-submarine duty.
While a bit obsolete, it does the job once the enemy submarine has been located.

Mechanics

Depth Charges are one of the main equipment used for ASW, being required to trigger an 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, Armor penetration from equipment stacks, The final armor of the targetted submarine cannot go below 1.

Notes

How To Obtain

Buildable

Stock equipment of: Akatsuki Kai, Akishimo Kai, Arashi, Asagumo Kai, Asakaze Kai, Hachijou Kai, Hamakaze, Hatakaze Kai, Hayanami Kai, Hayashimo Kai, Hibiki Kai, Ikazuchi Kai, Inazuma Kai, Ishigaki Kai, Isokaze Kai, Kashima Kai, Kashima, Katori Kai, Kunashiri Kai, Matsukaze Kai, Momo Kai (x2), Sagiri Kai, Samidare Kai, Shigure Kai, Shikinami Kai Ni, Shimushu Kai, Shiratsuyu Kai, Suzukaze Kai, Suzunami Kai, Tanikaze Kai, Tanikaze, Umikaze Kai Ni (★+5), Umikaze Kai, Urakaze D Kai, Urakaze, Ushio Kai Ni, Yamagumo Kai, Yamakaze Kai

From quest: Bq11 (x2, choice), C37 (choice), D42 (choice), D43 (x2, choice), F90 (x3, choice)

Uses

Used to improve: Type 94 Depth Charge Projector, Type 2 12cm Mortar Kai

Updates History

• 2013-05-08: Implemented
• 2013-11-01: Stats increased: +4 → +5
• 2014-02-26: ASW synergy added
• 2014-10-24: Became improvable and upgradeable to Type 3 Depth Charge Projector

Fit Bonuses

Ship	Extra Requirement								Note
Katori-class					+3			+2	Added 2021-03-01

Improvement

Type	Name	★	Resource							Day							2nd Ship	Note
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	Type 94 Depth Charge Projector	0	10	60	20	20	1/2	1/2	-	X	X	X	✓	✓	X	X	-	Upgrades to Type 3 Depth Charge Projector ★+3
		6					2/3	1/3	1x
		10					3/6	3/8	2x

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