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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:
OASW Ship ASW Stat Required Equipment Required Notes
Any Destroyer/Light Cruiser/Torpedo Cruiser/Fleet Oiler/Training Cruiser 100+ ASW SONAR 1 Sonar Equipped ASW Stat Required does include
visible equipment bonuses
Any Coastal Defense Ship 60+ ASW SONAR 1 Sonar Equipped
75+ ASW Total of 4+ ASW from equipment. ASW Stat Required does include
visible equipment bonuses

Visible equipment bonuses
don't count as equipment ASW.
Ship Banner Isuzu Kai Ni.png
Ship Banner Tatsuta Kai Ni.png
Ship Banner Yuubari Kai Ni D.pngKai Ni D
Ship Banner Jervis Kai.png
Ship Banner Janus Kai.png
Ship Banner Fletcher.png
Ship Banner Johnston.png
Ship Banner Samuel B. Roberts Kai.png
Can OASW innately N/A
Any Light Aircraft Carrier 50+ ASW SONAR + Torpedo Bomber Anti-Submarine Aircraft Autogyro
SONAR + Any with 7+ ASW
ASW Stat Required does include
visible equipment bonuses

Visible equipment bonuses
don't count as equipment ASW.
Ship Banner Taiyou.png
Ship Banner Shinyou.png
Ship Banner Gambier Bay.png
Ship Banner Zuihou Kai Ni B.pngKai Ni B
Ship Banner Ryuuhou Kai Ni.png
65+ ASW Torpedo Bomber Anti-Submarine Aircraft Autogyro
Any with 7+ ASW
100+ ASW SONAR + Dive Bomber Torpedo Bomber Anti-Submarine Aircraft Autogyro
SONAR + Any Plane with 1+ ASW
ASW Stat Required does include
visible equipment bonuses
Ship Banner Taiyou Kai.png
Ship Banner Shinyou Kai.png
Ship Banner Kaga Kai Ni Go.pngKai Ni Go
N/A Dive Bomber Torpedo Bomber Anti-Submarine Aircraft Autogyro
Any Plane with 1+ ASW
Ship Banner Hyuuga Kai Ni.png N/A AutogyroAutogyro2 AutogryosKa Type Observation Autogyro
O Type Observation Autogyro Kai
O Type Observation Autogyro Kai Ni

-or-
Autogyro1 HelicopterS-51J
S-51J Kai
.
Ship Banner Shinshuu Maru Kai.png
Ship Banner Fusou Kai Ni.png
Ship Banner Yamashiro Kai Ni.png
100+ ASW SONAR + SeaplaneBomber Autogyro
SONAR + Seaplane Bomber or Autogyro.

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).