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Combat/Battle Opening

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Battle Opening Breakdown

Battle Opening is one of the daytime combat intermediary phases, taking place immediately before the First shelling starts. In this phase, allied and enemy fleets launch attacks with the intent to disable or remove enemy targets before the combat proper starts. This grants either fleet substantial advantages by possibly disabling key ships on the opposing side.

Battle Opening has the following structure:

  • Opening ASW Shelling (OASW)
  • Opening Torpedo Salvo

In case neither fleets meet the requirements, the sub-phase will be skipped.

Opening ASW Shelling (OASW)

Commonly referred to as OASW (opening ASW). All eligible ships will perform a regular ASW Shelling attack, following range order in the same fashion as the First Shelling Phase. As these opening attacks happen before the Opening Torpedo Salvo, they may disable or even sink enemy submarines before they have a chance to attack.

OASW has the following trigger conditions:

  • The ship must be able to perform ASW shelling.
  • Meet their specific ASW stat threshold and requirements:
Ship Requirements
All ASW capable ships
  • ASW ≥ 100
  • Is equipped with a SONARSonar
Destroyer Escorts

Meet one condition:

  • ASW ≥ 60 and is equipped with a SONARSonar
  • ASW ≥ 75 and is equipped with a Depth ChargesDepth Charge with ASW stat ≥ 4
Isuzu Kai NiIsuzu Kai Ni
Tatsuta Kai NiTatsuta Kai Ni
Jervis KaiJervis Kai
Janus KaiJanus Kai
Samuel B. Roberts KaiSamuel B. Roberts Kai
FletcherFletcher
Fletcher Kai
Fletcher Kai Mod.2
Fletcher Mk.II

JohnstonJohnston
Johnston Kai

Yuubari Kai Ni DYuubari Kai Ni D
  • Performs OASW unconditionally.
TaiyouTaiyou
ShinyouShinyou
Gambier BayGambier Bay
Gambier Bay Kai

Zuihou Kai Ni BZuihou Kai Ni B

Meet all conditions in one set:

Set 1:

  • ASW ≥ 50 and is equipped with a SONARSonar
  • At least 1 Torpedo BomberTorpedo Bomber with ASW ≥ 7, AutogyroAutogyro or Anti-Submarine AircraftLiaison Aircraft

Set 2:

  • ASW ≥ 65
  • At least 1 Torpedo BomberTorpedo Bomber with ASW ≥ 7, AutogyroAutogyro or Anti-Submarine AircraftLiaison Aircraft

Set 3:

  • ASW ≥ 100 and is equipped with a SONARSonar
  • At least 1 Torpedo BomberDive BomberBomber with ASW stat.
Taiyou KaiTaiyou Kai
Taiyou Kai Ni

Shinyou KaiShinyou Kai
Shinyou Kai Ni
  • ASW ≥ 65
Light Carriers
(Except Suzuya Carrier Kai NiSuzuya Carrier Kai Ni
and Kumano Carrier Kai NiKumano Carrier Kai Ni)
  • ASW ≥ 50 and is equipped with a SONARLarge Sonar
  • At least 1 Torpedo BomberTorpedo Bomber with ASW ≥ 7, AutogyroAutogyro or Anti-Submarine AircraftLiaison Aircraft
Hyuuga Kai NiHyuuga Kai Ni

Meet one condition:

Abyssals

Abyssal ships do not follow these rules. The following may perform OASW unconditionally:

Other abyssals cannot perform OASW.

Opening Torpedo Salvo

Commonly referred to as oTorp (opening torpedo). Eligible ships will fire an Opening Torpedo attack. This attack behaves similarly to the Closing Torpedo attack, with the difference that it will be launched regardless of the ship's damage state. Opening Torpedo salvo has the following trigger conditions:

This phase follows the same rules as Closing Torpedo Salvo, with some exceptions:

  • Ships at Moderate or Heavy Damage can still fire torpedoes.
  • If there are no surface ships on the opposing fleet, torpedoes will be shown targeting randomly chosen submarines. This however will never deal damage and will always display as a "miss".

After the Opening Torpedo Salvo, the Day Battle Shelling starts (if there are any remaining ships on either side left).