Seiran (631 Air Group)
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Clear Sky Storm (631 Air Group)
No.208 晴嵐(六三一空)
| |
 Seaplane BomberEffects:
 +12  +3  +2  +6Combat Radius: 4 (Deployment Cost:
 10)Scrap value:
 4  5 20 (Unbuildable) | |
.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 |
| LBAS Plane | |
Introduction
カタパルト射出可能な高性能攻撃機「晴嵐」で編成された実戦部隊です。
潜水空母による戦略的な運用を目指して開発された、高い攻撃力を秘めたハイスペックな潜水艦搭載水上攻撃機「晴嵐」。
同機を集中配備した潜水艦隊部隊運用航空隊「六三一空」の実戦部隊。
ぜひ正攻法で活躍させたいところです！
This is an actual combat unit formed with the catapult-launchable high-performance attacker "Seiran".
Developed for strategic operation by submarine carriers, the high-specification submarine-mounted seaplane attacker "Seiran" has high attack power.
This is the actual combat unit of the "631st Air Group", the submarine fleet operation squadron that intensively deploys this aircraft.
I'd really like to see it in action the way it was intended!
Mechanics
Seaplanes are the main aircraft type used by non-carrier ships (mainly battleships, cruisers, and auxiliaries).
- They are notably required to trigger Artillery Spotting.
Bomber Seaplane Bombers additionally act like Dive Bombers, taking part in the same air phases and sharing the same damage formulas. Additionally, they:
- Play some minor Anti-Installation role.
- Bring an accuracy bonus against PT boats.
This plane has Anti-Air Resistance.
- 0.6 Ship AA Modifier
Notes
Not to be confused with other aircraft of this family (see here).
How To Obtain
From quest: F49
Ranking reward for:
- Jan 2024: 1-5 (★+4), 6-20 (★+3)
Updates History
- 2017-01-27: Implemented
- 2024-02-27: Anti-air resistance added
Fit Bonuses
| Seiran (631 Air Group) Equipment Bonuses | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Ship | Extra Requirement | 
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Note | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mogami Kai Ni /Toku  Yahagi Kai Ni /B  
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- | +1 | +1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| (1st equipped) | +2 | One-time[1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Noshiro Kai Ni
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(1st equipped) | +2 | +1 | One-time[1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Mikuma Kai Ni /Toku 
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- | +1 | +1 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| (1st equipped) | +1 | One-time[1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- ↑ 1.0 1.1 1.2 Shared with Zuiun
, Prototype Seiran
, Zuiun (634 Air Group)
, Zuiun Model 12
, Zuiun Model 12 (634 Air Group)
, Zuiun (631 Air Group)
| Seaplane Bomber Type Equipment Bonuses | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Ship | Extra Requirement |
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| Noshiro Kai Ni Yahagi Kai Ni /B
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(1st equipped) | +1 | +1 | +1 | One-time[1] | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Mogami Kai Ni /Toku Mikuma Kai Ni /Toku
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(1st equipped) | +1 | +1 | One-time[1] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
- ↑ 1.0 1.1 Shared with all Seaplane Bomber
Improvement
Improvement  effects
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| Bomber
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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 |
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1.2 | 1.69 | 2.07 | 2.40 | 2.68 | 2.93 | 3.17 | 3.39 | 3.60 | 3.79 |
Trivia
The depicted plane is allegedly the M6A1 variant.
The Seirans were only deployed operationally once, aboard I-400, I-401, I-13, and I-14. While initial plans intended for them to strike the Panama Canal, the desperate strategic situation switched the target to the American base at Ulithi Atoll. For the measly six planes to successfully reach this target, they were painted in American colors, a decision highly unpopular with the crews - represented here by the fairy kicking over the paint bucket. This operation, codenamed "Hikari", was canceled with the Japanese surrender, and the disguised Seirans were thrown overboard before the submarines returned home.
See Also
- Zunin 631st Air Group (Japanese)