Changes

** If all 3 ships are SS(V), the 2nd and 4th ones will attack; if one of the two is {{color|orange|'''moderately damaged (中破)'''}}, the 3rd one will attack instead.<ref>[https://twitter.com/yukicacoon/status/1394879812968222721]</ref>

** If all 3 ships are SS(V), the 2nd and 4th ones will attack; if one of the two is {{color|orange|'''moderately damaged (中破)'''}}, the 3rd one will attack instead.<ref>[https://twitter.com/yukicacoon/status/1394879812968222721]</ref>

* The fleet must be a single fleet or a [[Striking Force Fleet]],

* The fleet must be a single fleet or a [[Striking Force Fleet]],

* The formation needs to be either {{ToolTip|[[Echelon]]|[[File:Heian Maru Special Attack Summer bis 2024.png|[[Seasonal/Summer 2024|Special Attack Summer bis 2024]]

* The formation needs to be either {{ToolTip|[[Echelon]]|[[File:Echelon.png]]}} or {{ToolTip|[[Line Abreast]]|[[File:LineAbreast.png]]}},

Heian Maru Kai Special Attack Summer bis 2024 Damaged.png|[[Seasonal/Summer 2024|Special Attack Kai Summer bis 2024 Damaged]]Echelon.png]]}} or {{ToolTip|[[Line Abreast]]|[[File:LineAbreast.png]]}},

* At least one {{Item/Link|Submarine Supply Material}} must be available in the inventory.

* At least one {{Item/Link|Submarine Supply Material}} must be available in the inventory.

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