[Edit]
Type 2 12cm Mortar Kai
No.346 二式12cm迫撃砲改
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 Depth ChargeEffects:
 +3  +1Scrap value:
 1  2  1  1 (Unbuildable) | |
| 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
元々は大戦後半期に日本陸軍が開発した陸戦用の迫撃砲です。十分な対潜装備のなかった陸軍の船舶などに搭載され、前方投射型の対潜火器としても運用されました。本兵装は同迫撃砲をさらに改良した艦載用強化型です。爆雷投射機の代替として、また限定的ながら対地攻撃も可能です。
This mortar was originally developed by the Japanese Army during the latter half of the war for ground engagements. It was also installed on Army ships which had little anti-submarine equipment, and used to project depth charges forward. This equipment is an improved version of the mortar, for use on ships. It can act as a depth charge projector, or be used for ground attack to a limited extent.
Notes
Unbuildable
- June 2019 Ranking reward for all tiers.
- July 2019 Ranking reward for ranks 21-500.
- Summer 2019 Event E-1 Easy/Medium/Hard reward (received 2 copies on Medium, Hard).
- Quest B139 offers three copies of this as a choice between two rewards.
- Quest F90 offers this as a choice between three rewards.
| ASW Damage Synergy | |||
|---|---|---|---|
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Sonar | Large
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Large Sonar |
| All Sonars | 
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(?) Type 0 Passive Sonar (?)
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| DCP Depth Charge Projectors (DCP)
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Type 94 Depth Charge Projector
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Type 3 Depth Charge Projector
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Type 3 Depth Charge Projector (Concentrated Deployment)
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Prototype 15cm 9-tube ASW Rocket Launcher
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RUR-4A Weapon Alpha Kai
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| DC Depth Charge (Racks) (DC)
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Type 95 Depth Charge
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Type 2 Depth Charge
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Lightweight ASW Torpedo (Initial Test Model)
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Hedgehog (Initial Model)
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| Other Other
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Type 2 12cm Mortar Kai
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Type 2 12cm Mortar Kai (Concentrated Deployment)
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| ASW Damage Modifiers | |||
| Sonar + DCP/ Other
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1.15x | ||
| Sonar + DC
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1.15x | ||
| DCP + DC
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1.1x | ||
| Sonar + DCP + DC
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1.4375x | ||
| Armor Penetration | |||
Indepentant of synergies, these equipment provide armor penetration to ASW attacks:
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Improvement
| Improvement Cost: 20 120 30 10
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★ | 
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S | M | T | W | T | F | S | Helper Ship |
|---|---|---|---|---|---|---|---|---|---|---|---|
Consumes: 1x  Drum Canister (Transport Use)
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0 | 2/3 | 2/2 | K |
✗ | ✗ | N |
A K N |
A K N |
K N |
Akitsu Maru Kai Kamikaze (Kai) Nisshin (Kai/A) |
Consumes: 1x  Type 94 Depth Charge Projector
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6 | 4/6 | 3/4 | ||||||||
Consumes: 1x  Action Report2x Type 2 12cm Mortar KaiProduces: 1x Type 2 12cm Mortar Kai (Concentrated Deployment)
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10 | 18/30 | 6/9 |