Changes

==Introduction==

==Introduction==

12cm30連装噴進砲は、艦載用対空ロケットランチャーです。<br>

12cm30連装噴進砲は、艦載用対空ロケットランチャーです。<br>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。<br>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！

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。<br>

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.''<br>

''The 12cm 30-tube launcher is an anti-aircraft rocket launcher for ships.<br>The threatening barrage that fires 30 consecutive rocket-type shrapnel shells (RoSa shells) protects allies from fragile enemy carrier-based aircraft.<br>By all means, pack these onto the refurbished Ise and Hyuuga and break through the onslaught of enemy aircraft carriers!''

''The threatening barrage that fires 30 consecutive rocket-type shrapnel shells (RoSa shells) protects allies from fragile enemy carrier-based aircraft.''<br>

''By all means, pack these onto the refurbished Ise and Hyuuga and break through the onslaught of enemy aircraft carriers!''

==Notes==

==Notes==

<div class="mw-collapsible"><h3>How To Obtain</h3>

===How To Obtain===

<div class="mw-collapsible-content">

'''Buildable'''

'''Buildable'''

'''Stock equipment''' of {{Ship/Link|Amagi Kai}}, {{Ship/Link|Chitose Carrier Kai Ni}}, {{Ship/Link|Chitose Carrier Kai}}, {{Ship/Link|Chiyoda Carrier Kai Ni}}, {{Ship/Link|Chiyoda Carrier Kai}}, {{Ship/Link|Fusou Kai Ni}}, {{Ship/Link|Hyuuga Kai Ni}}, {{Ship/Link|Ise Kai Ni}}, {{Ship/Link|Junyou Kai Ni}}, {{Ship/Link|Katsuragi Kai}}, {{Ship/Link|Ryuuhou Kai}}, {{Ship/Link|Shinyou Kai Ni}}, {{Ship/Link|Shoukaku Kai}}, {{Ship/Link|Unryuu}}, {{Ship/Link|Zuikaku Kai}}

'''Stock equipment''' of {{Ship/Link|Amagi Kai}}, {{Ship/Link|Chitose Carrier Kai Ni}}, {{Ship/Link|Chitose Carrier Kai}}, {{Ship/Link|Chiyoda Carrier Kai Ni}}, {{Ship/Link|Chiyoda Carrier Kai}}, {{Ship/Link|Fusou Kai Ni}}, {{Ship/Link|Hyuuga Kai Ni}}, {{Ship/Link|Ise Kai Ni}}, {{Ship/Link|Junyou Kai Ni}}, {{Ship/Link|Katsuragi Kai}}, {{Ship/Link|Ryuuhou Kai}}, {{Ship/Link|Shinyou Kai Ni}}, {{Ship/Link|Shoukaku Kai}}, {{Ship/Link|Unryuu}}, {{Ship/Link|Zuikaku Kai}}

'''From quests: '''[[Quests#B113|B113]] (x2, choice), [[Quests#B171|B171]] (x3, choice), [[Quests#C22|C22]] (x2, choice), [[Quests#C35|C35]] (x2, choice), [[Quests#C38|C38]] (x2, choice), [[Quests#F71|F71]] (x2, choice), [[Quests#F72|F72]] (x2, choice), [[Quests#F90|F90]] (x2, choice)

'''From quests:''' [[Quests#B113|B113]] (x2, choice), [[Quests#B171|B171]] (x3, choice), [[Quests#C22|C22]] (x2, choice), [[Quests#C35|C35]] (x2, choice), [[Quests#C38|C38]] (x2, choice), [[Quests#F71|F71]] (x2, choice), [[Quests#F72|F72]] (x2, choice), [[Quests#F90|F90]] (x2, choice)

''From limited-time quests: ''[[Quests/Seasonal#5A01|5A01]] (x3, choice), [[Quests/Seasonal#SB34|SB34]] (x4, choice), [[Quests/Seasonal#SB48|SB48]] (x3, choice), [[Quests/Seasonal#SB53|SB53]] (x6, choice), [[Quests/Seasonal#Su03|Su03]] (x2, choice), [[Quests/Seasonal#Su07|Su07]] (choice), [[Quests/Seasonal#21Fa LB02|21Fa LB02]] (x4 choice)

''From limited-time quests:'' [[Quests/Seasonal#5A01|5A01]] (x3, choice), [[Quests/Seasonal#SB34|SB34]] (x4, choice), [[Quests/Seasonal#SB48|SB48]] (x3, choice), [[Quests/Seasonal#SB53|SB53]] (x6, choice), [[Quests/Seasonal#Su03|Su03]] (x2, choice), [[Quests/Seasonal#Su07|Su07]] (choice), [[Quests/Seasonal#21Fa LB02|21Fa LB02]] (x4 choice)

===Uses===

 

<div class="mw-collapsible"><h3>Uses</h3>

<div class="mw-collapsible-content">

'''Used to improve''' {{Equipment/Link|12cm 30-tube Rocket Launcher}}, {{Equipment/Link|Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)}}, {{Equipment/Link|12cm 30-tube Rocket Launcher Kai Ni}}, {{Equipment/Link|Shipborne Model Type 4 20cm Anti-ground Rocket Launcher}}

'''Used to improve''' {{Equipment/Link|12cm 30-tube Rocket Launcher}}, {{Equipment/Link|Daihatsu Landing Craft (Type 89 Medium Tank & Landing Force)}}, {{Equipment/Link|12cm 30-tube Rocket Launcher Kai Ni}}, {{Equipment/Link|Shipborne Model Type 4 20cm Anti-ground Rocket Launcher}}

'''Used by quests: '''[[Quests#F89|F89]]

'''Used by quests:''' [[Quests#F89|F89]]

 

 

 

<div class="mw-collapsible><h3>Updates History</h3>

===Updates History===

<div class="mw-collapsible-content>

* '''2013-05-15: Implemented'''

* '''2013-05-15:''' '''Implemented'''

* '''2014-09-12: Stats increased: {{AA}}+6 → {{AA}}+8'''

* '''2014-09-12:''' '''Stats increased:'''  '''{{AA}}+6 → {{AA}}+8 '''

* '''2018-02-05:''' Became '''improvable''' and '''upgradeable''' to {{Equipment/Link|12cm 30-tube Rocket Launcher Kai Ni}}

* '''2018-02-05:''' Became '''improvable''' and '''upgradeable''' to {{Equipment/Link|12cm 30-tube Rocket Launcher Kai Ni}}

* '''2020-02-07:''' Became '''buildable'''

* '''2020-02-07:''' Became '''buildable'''

==Akashi's Improvement Arsenal==

==Akashi's Improvement Arsenal==

==Trivia==

==Trivia==

* The name (ロサ弾), "RoSa Shell" is an abbreviated name for "'''Ro'''cket Shou'''sa'''n '''Shell'''". As the name suggest, this is also an incendiary shrapnel shell.

* The name (ロサ弾), "RoSa Shell" is an abbreviated name for "'''Ro'''cket Shou'''sa'''n '''Shell'''". As the name suggests, this is also an incendiary shrapnel shell.

==See Also==

==See Also==