21inch 4-tube Bow Torpedo Launcher (Initial Model)
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No.511 21inch艦首魚雷発射管4門(初期型)
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 Submarine TorpedoEffects:
 +8  +4  ShortScrap value:
 2  2  2  2 (Buildable) | |
.png) .png) .png) .png) | |
| 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
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Mechanics
Torpedoes are almost exlusively used to trigger Night Cut-Ins, especially the Torpedo Cut-In (TCI). Their main stat is the "torpedo" 
stat.
- This stat is also used to calculate damages during the Opening Torpedo Salvo and Closing Torpedo Salvo.
Notes
How To Obtain
Event reward for:
- Summer 2023 Event E-1: Hard Choice x3, Medium Choice x2, Easy Choice, Casual Choice
Updates History
- 2023-08-09: Implemented as Event Reward
Fit Bonuses
| 21inch 4-tube Bow Torpedo Launcher (Initial Model) Equipment Bonuses | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Ship | Extra Requirement | 
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Salmon-class
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(1st equipped) | +3 | +4 | One-time[1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Gato-class 
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(1st equipped) | +1 | +2 | One-time[1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- ↑ 1.0 1.1 Shared with 21inch 4-tube Bow Torpedo Launcher (Late Model)
Improvement
Improvement  effects
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1★ | 2★ | 3★ | 4★ | 5★ | 6★ | 7★ | 8★ | 9★ | Max★ |
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0.2 | 0.4 | 0.6 | 0.8 | 1.0 | 1.2 | 1.4 | 1.6 | 1.8 | 2.0 |