12cm 30-tube Rocket Launcher

[Edit] 12cm 30-tube Rocket Launcher No.51 12cm30連装噴進砲
Anti-Aircraft Gun Effects: +8 Scrap value: 4 2 2 (Buildable)
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 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!

Notes

How To Obtain

Buildable

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), C38 (x2, choice), F71 (x2, choice),F72 (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)

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

Type	Name	★	Resource							Day							2nd Ship	Note
										Sun	Mon	Tue	Wed	Thu	Fri	Sat
	12cm 30-tube Rocket Launcher	0	90	270	50	180	3/6	2/3	1x	I	H	H	X	X	I	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	2x
		10					10/30	7/10	3x 1x

Improvement effects
	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	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.

See Also

12 cm (4.7") AA Rocket