12cm 30-tube Rocket Launcher
[Edit]
No.51 12cm30連装噴進砲
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 Anti-Aircraft GunEffects:
 +8Scrap value:
 4  2  2 (Buildable) | |
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| 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
12cm30連装噴進砲は、艦載用対空ロケットランチャーです。
四式ロケット式焼霰弾（ロサ弾）を30連発で連続発射する脅威の弾幕は、肉薄する敵艦載機から味方艦を護ります。
ぜひ、改装した伊勢・日向に満載して、敵空母の猛攻を突破してください！
The 12 cm 30-tube launcher is an anti-aircraft rocket launcher for ships.
The threatening barrage that fires 30 consecutive rocket-type shrapnel shells (RoSa shells) protects allies from fragile enemy carrier-based aircraft.
By all means, pack these onto the refurbished Ise and Hyuuga and break through the onslaught of enemy aircraft carriers!
Notes
How To Obtain
| Best craft recipe |  10 |
 40 |
 20 |
 20 |
AviationShips with special crafting will have reduced rates of other specific equipment Especially Akitsu Maru  , Shinshuu Maru , Kumano Maru , Souya (AGS) Secretary: Category AviationShip Types included: CAV, CVL, BBV, CV, AV, LHA, CVB, Souya (AGS)
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Stock equipment of: Amagi Kai
, Chitose Kou Kai Ni
, Chitose Kou Kai
, Chiyoda Kou Kai Ni
, Chiyoda Kou Kai
, Fusou Kai Ni
, Hyuuga Kai Ni
, Ise Kai Ni
, Junyou Kai Ni
, Katsuragi Kai
, Ryuuhou Kai
, Shinyou Kai Ni
, Shoukaku Kai
, Unryuu
, Zuikaku Kai
From quest: B113 (x2, choice), B171 (x3, choice), C22 (x2, choice), C35 (x2, choice), Cq2 (x2, choice), F71 (x2, choice),Fq6 (x2, choice), Fq9 (x2, choice)
From limited-time quest: 5A01 (x3, choice), SB34 (x4, choice), SB48 (x3, choice), SB53 (x6, choice), Su03 (x2, choice), Su07 (choice), 21Fa LB02 (x4 choice), 2302 B1 (x2 choice), 2310 Bw1 (x2 choice)
Uses
Used to improve: 12cm 30-tube Rocket Launcher
, Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)
, 12cm 30-tube Rocket Launcher Kai Ni
, Shipborne Model Type 4 20cm Anti-ground Rocket Launcher
Used by quest: F89
Updates History
- 2013-05-15: Implemented
- 2014-09-12: Stats increased:
+6 → +8 - 2018-02-05: Became improvable and upgradeable to 12cm 30-tube Rocket Launcher Kai Ni
- 2020-02-07: Became buildable
Improvement
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|---|---|---|---|---|---|---|
| Improvement | → | Conversion | ||||
| ★ Improvement Level |
0~5 | 6~9 |  12cm 30-tube Rocket Launcher Kai 2 | |||
 Consumed
|
3/6 | 5/9 | 10/30 | |||
 Consumed
|
2/3 | 3/5 | 7/10 | |||
| Equipment Consumed |
|
x2
|
 x3
| |||
| Items Consumed |
- | 
| ||||
| Resources | 90 270 50 180
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| Ship Helper | Conversion | |||||
|---|---|---|---|---|---|---|
 Ise Kai |
12cm 30-tube Rocket Launcher Kai 2 | |||||
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
 Hyuuga Kai | ||||||
| Mon | Tue | Wed | Thu | Fri | Sat | Sun |
| Ise/Hyuuga Kai Ni do not work | ||||||
Improvement  effects
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|---|---|---|---|---|---|---|---|---|---|---|
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1★ | 2★ | 3★ | 4★ | 5★ | 6★ | 7★ | 8★ | 9★ | Max★ |
|
1.00 | 1.41 | 1.73 | 2.00 | 2.23 | 2.44 | 2.64 | 2.82 | 3.00 | 3.16 |
|
1.2 | 1.69 | 2.07 | 2.40 | 2.68 | 2.93 | 3.17 | 3.39 | 3.60 | 3.79 |
| [math]\displaystyle{ \text{AdjAA}_\text{ship} }[/math] | 6.00 | 8.49 | 10.39 | 12.00 | 13.42 | 14.70 | 15.87 | 16.97 | 18.00 | 18.97 |
 Torpedo
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2.00 | 2.82 | 3.46 | 4.00 | 4.47 | 4.89 | 5.29 | 5.65 | 6.00 | 6.32 |
Trivia
- The name (ロサ弾), "RoSa Shell" is an abbreviated name for "Rocket Shousan Shell". As the name suggests, this is also an incendiary shrapnel shell.