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12cm 30-tube Rocket Launcher

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No.51 12cm30連装噴進砲
GreenGunMG.png Anti-Aircraft Gun
Effects: AA+8
Scrap value: Ammo 4 Steel 2 Bauxite 2 (Buildable)

Equipment Card 12cm 30-tube Rocket Launcher.png

Equipment Character 12cm 30-tube Rocket Launcher.png

Equipment Item 12cm 30-tube Rocket Launcher.png

Equipment Full 12cm 30-tube Rocket Launcher.png

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



The 12cm 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!


How To Obtain


Stock equipment of: Amagi KaiAmagi Kai, Chitose Kou Kai NiChitose Kou Kai Ni, Chitose Kou KaiChitose Kou Kai, Chiyoda Kou Kai NiChiyoda Kou Kai Ni, Chiyoda Kou KaiChiyoda Kou Kai, Fusou Kai NiFusou Kai Ni, Hyuuga Kai NiHyuuga Kai Ni, Ise Kai NiIse Kai Ni, Junyou Kai NiJunyou Kai Ni, Katsuragi KaiKatsuragi Kai, Ryuuhou KaiRyuuhou Kai, Shinyou Kai NiShinyou Kai Ni, Shoukaku KaiShoukaku Kai, UnryuuUnryuu, Zuikaku KaiZuikaku 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)


Used to improve: 12cm 30-tube Rocket Launcher12cm 30-tube Rocket Launcher, Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force), 12cm 30-tube Rocket Launcher Kai Ni12cm 30-tube Rocket Launcher Kai Ni, Shipborne Model Type 4 20cm Anti-ground Rocket LauncherShipborne Model Type 4 20cm Anti-ground Rocket Launcher

Used by quest: F89

Updates History

  • 2013-05-15: Implemented
  • 2014-09-12: Stats increased: Anti-Air+6 → Anti-Air+8
  • 2018-02-05: Became improvable and upgradeable to 12cm 30-tube Rocket Launcher Kai Ni12cm 30-tube Rocket Launcher Kai Ni
  • 2020-02-07: Became buildable


Type Name Resource Day 2nd Ship Note
Fuel Ammunition Steel Bauxite Item Icon Development Material.png Item Icon Improvement Material.png # of equipment needed for that upgrade. An asterisk following the number indicates a different equipment is required. Sun Mon Tue Wed Thu Fri Sat
Anti-Aircraft Gun 12cm 30-tube Rocket Launcher 0 90 270 50 180 3/6 2/3 1xGreenGunMG.png I
Ise Kai
Hyuuga Kai
Upgrades to 12cm 30 Tube Rocket Launcher Kai 2.
Ise Kai Ni and Hyuuga Kai Ni can NOT improve this equipment.
6 5/9 3/5 2xGreenGunMG.png
10 10/30 7/10 3xGreenGunMG.png
1xAction Report
Improvement Improved effects
Anti-Aircraft Gun 1★ 2★ 3★ 4★ 5★ 6★ 7★ 8★ 9★ Max★
Firepower 1.00 1.41 1.73 2.00 2.23 2.44 2.64 2.82 3.00 3.16
Torpedo Attack 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
Accuracy Torpedo 2.00 2.82 3.46 4.00 4.47 4.89 5.29 5.65 6.00 6.32


  • 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.

See Also

12 cm (4.7") AA Rocket