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→Opening ASW Shelling (OASW)
{{CombatPortal}}
=Battle Opening Breakdown=
=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 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.
=Opening ASW Shelling (OASW)=
=Opening ASW Shelling (OASW)=
<onlyinclude>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.
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:
OASW has the following trigger conditions:
* The ship must be able to perform ASW shelling.
* Only ships listed below can trigger an OASW,
* Meet their specific ASW stat threshold and requirements:
** The ship is not required to be able to perform any [[ASW Shelling]].
* They must meet their specific ASW stat threshold and requirements, listed below,
* For [[Combined Fleet]]s, only ships in the escort fleet can perform OASW.
{|class="wikitable" style="width:1050px; text-align:center; margin:auto"
{|class="wikitable" style="text-align:center; margin:auto"
!width="25%"|OASW Ship
!OASW Ship
!ASW Stat Required<ref>The Required ASW Stat '''does''' include [[Equipment_Bonuses|visible equipment bonuses]], but '''does not''' include [[Improvement|improvement bonuses]].</ref>
!ASW Stat Required<ref>The Required ASW Stat '''does''' include [[Visible Bonus]]es, but '''does not''' include [[Improvement]]s.</ref>
!Equipment Required<ref>[[Equipment_Bonuses|Visible equipment bonuses]] or [[Improvement|improvement bonuses]] '''do not''' count as equipment ASW (e.g. a +6 ASW equipment with +1 ASW bonus does not count as a +7 equipment but just as a +6 one).</ref><ref>Regardless of their ASW stat, {{GreenPlane}}{{Night Fighter Aircraft}} [[:Category:Fighters|Fighters]] or {{YellowPlane}} [[:Category:Recon Aircraft|Recon Aircrafts]] cannot trigger any OASW.</ref>
![[Sonar]]<br>Required?
!Other Equipment Required<ref>[[Visible Bonus]]es or [[Improvement]]s '''do not''' count as equipment ASW (e.g. a +6 ASW equipment with +1 ASW bonus does not count as a +7 equipment but just as a +6 one).</ref><ref>When applicable, if all relevant ASW aircraft are in zero plane slots, and no bomber {{Dive Bomber}}/{{Torpedo Bomber}} with 1+ {{ASW}} are present in non-zero plane slot, the ship cannot OASW.</ref><ref>Regardless of their ASW stat, {{Fighter}}{{Night Fighter}} [[Fighter]]s or {{Carrier Recon}} [[Carrier Recon]]s cannot trigger any OASW.</ref>
|-
|-
! Any [[DD|Destroyer]]/[[CL|Light Cruiser]]/[[CLT|Torpedo Cruiser]]/[[AO|Fleet Oiler]]/[[CT|Training Cruiser]]
! rowspan=2| Any [[DE]]
| '''60+ ASW
| '''100+ ASW'''
|{{Sonar}} required
| {{Sonar}} '''1 [[:Category:Sonar|Sonar]] Equipped'''
| N/A
|-
|-
| '''75+ ASW
| '''60+ ASW'''
|{{TextGlow|None|black|text-colour=lime|glow-size=1px}}
| {{Sonar}} '''1 [[:Category:Sonar|Sonar]] Equipped'''
| Total of '''4+ ASW''' from equipment
|-
|-
| '''75+ ASW'''
! Any [[DD]], [[CL]], [[CLT]], [[CT]], [[AO]]<ref>Other [[ASW Shelling]] capable ships may be able to OASW, but cannot reach 100 ASW {{ASW}} using currently available equipment.</ref>
| Total of '''4+ ASW''' from equipment
| '''100+ ASW
|{{Sonar}} required
|rowspan=2| N/A
|-
|-
! {{Ship/Banner|Isuzu/Kai Ni|small=true}}<br>{{Ship/Banner|Tatsuta/Kai Ni|small=true}}<br>{{ItemStack|item={{Ship/Banner|Yuubari/Kai Ni D|small=true}}|text=Kai Ni D}}<br>{{Ship/Banner|Jervis/Kai|small=true}}<br>{{Ship/Banner|Janus/Kai|small=true}}<br>{{Ship/Banner|Fletcher|small=true}}<br>{{Ship/Banner|Johnston|small=true}}<br>{{Ship/Banner|Samuel B. Roberts/Kai|small=true}}
!
{|class="wikitable mw-collapsible mw-collapsed" width=260px|
|Any DD, CL, CLT, CT, AO<br>with 50+ innate base {{ASW}}<ref name="Innate">The base ASW stat of the ship at Lv 1.</ref>
|-
|-
|{{Ship/Link|Tatsuta/Kai Ni}}<br>{{Ship/Link|Isuzu/Kai Ni}}<br>{{Ship/Link|Yuubari/Kai Ni D}}<br>{{Class|Fletcher}}<ref>Kai only for [[Heywood L. Edwards]] and [[Richard P. Leary]].</ref><br>{{Class|John C. Butler|Kai/Mk.II}}<br>{{Class|J|Kai}}
|}
| {{Sonar}} '''+''' {{BluePlane}} {{ASWPlane}} {{Autogyro}}<br>'''[[:Category:Sonar|Sonar]]''' + Any with '''[[:Category:ASW Aircrafts|7+ ASW]]'''
| '''N/A
|{{TextGlow|None|black|text-colour=lime|glow-size=1px}}
|-
|-
!rowspan="2"|[[CVE|Escort Carriers (CVE)]]:<br>{{Ship/Banner|Taiyou|small=true}}<br>{{Ship/Banner|Unyou|small=true}}<br>{{Ship/Banner|Shinyou|small=true}}<br>{{Ship/Banner|Gambier Bay|small=true}}<br>{{ItemStack|item={{Ship/Banner|Zuihou/Kai Ni B|small=true}}|text=Kai Ni B}}<br>{{ItemStack|item={{Ship/Banner|Ryuuhou/Kai Ni|small=true}}|text=Kai Ni/E}}
!Any [[BBV]]<ref>Excluding [[Hyuuga Kai Ni]]</ref>, [[LHA]]<ref>Only [[Yamato Kai Ni Juu]], [[Shinshuu Maru Kai]], and [[Kumano Maru Kai]] so far</ref>
|rowspan=2| '''100+ ASW
|rowspan=2|{{Sonar}} required
|Any 1+ ASW {{ASW}}: {{SPB}} / {{Autogyro}} / {{Liaison}} / {{Dive Bomber}}
|-
|-
| '''100+ ASW'''
!{{Class|Fusou|Kai Ni}}
| {{Sonar}} '''+''' {{RedPlane}} {{BluePlane}} {{ASWPlane}} {{Autogyro}}<br>'''[[:Category:Sonar|Sonar]]''' + Any with '''1+ ASW'''
|Any 1+ ASW {{ASW}}: {{SPB}} / {{Autogyro}} / {{Depth Charge}}
|-
|-
!{{Ship/Banner|Taiyou/Kai|small=true}}<br>{{Ship/Banner|Unyou/Kai|small=true}}<br>{{Ship/Banner|Shinyou/Kai|small=true}}<br>{{ItemStack|item={{Ship/Banner|Kaga/Kai Ni Go|small=true}}|text=Kai Ni Go}}
!colspan=4|
| {{RedPlane}} {{BluePlane}} {{ASWPlane}} {{Autogyro}}<br>Any with '''1+ ASW'''
|-
|-
!{{Ship/Banner|Hyuuga/Kai Ni|small=true}}
!{{Ship/Banner|Hyuuga/Kai Ni|small=true}}
| '''N/A'''
| '''N/A
| {{Autogyro}}{{Autogyro}}'''2 {{EquipmentLink|Ka Type Observation Autogyro|O Type Observation Autogyro Kai|O Type Observation Autogyro Kai Ni|text=Autogryos}}'''<br>-or-<br>{{Autogyro}}'''1 {{EquipmentLink|S-51J|S-51J Kai|text=Helicopter}}'''
|{{TextGlow|None|black|text-colour=lime|glow-size=1px}}
| {{Autogyro}}{{Autogyro}}'''2 {{EquipmentLink|Ka Type Observation Autogyro|O Type Observation Autogyro Kai|O Type Observation Autogyro Kai Ni|text=Autogyros|link_category=Autogyros}}'''<br>-or-<br>{{Autogyro}}'''1 {{EquipmentLink|S-51J|S-51J Kai|text=Helicopter|link_category=Helicopters}}
|-
!colspan=4|
|-
!rowspan=3| Any [[CVL]]<ref>The {{Class|Mogami|Kou Kai Ni}} cannot perform any OASW [https://discord.com/channels/118339803660943369/178613137430282240/1305127654017466428]</ref><ref>[[CVE]] should be used, as they are the only CVL with base ASW {{ASW}} stat.</ref>
| '''50+ ASW
|{{Sonar}} required
|rowspan=2|Any [[ASW Aircraft|7+ ASW]] {{ASW}}: {{Torpedo Bomber}} / {{Liaison}} / {{Autogyro}}
|-
| '''65+ ASW
|{{TextGlow|None|black|text-colour=lime|glow-size=1px}}
|-
| '''100+ ASW
|{{Sonar}} required
|rowspan=2|Any 1+ ASW {{ASW}}: {{Dive Bomber}} / {{Torpedo Bomber}} / {{Liaison}} / {{Autogyro}}
|-
|-
!{{Ship/Banner|Shinshuu Maru/Kai|small=true}}<br>{{Ship/Banner|Fusou/Kai Ni|small=true}}<br>{{Ship/Banner|Yamashiro/Kai Ni|small=true}}<br>{{ItemStack|item={{Ship/Banner|Yamato/Kai Ni Juu|small=true}}|text=Kai Ni Juu}}
!
| '''100+ ASW'''
{|class="wikitable mw-collapsible mw-collapsed" width=100%
| {{Sonar}} '''+''' {{ItemStack|item={{Seaplane}}|text=Bomber|font-size = 9px|text-color = fff|glow-color = 000|text-position = right:0px;bottom:-12px}} {{Autogyro}}<br>'''[[:Category:Sonar|Sonar]]''' + [[:Category:Seaplane Bombers|Seaplane Bomber]] or [[:Category:Rotorcraft|Rotorcraft]]
|Any CV(L)<br>with 50+ innate base {{ASW}}<ref name="Innate"/>
|-
|{{Ship/Link|Kaga/Kai Ni Go}}<br>{{Class|Taiyou|Kai/Ni}}
|}
| '''N/A
|{{TextGlow|None|black|text-colour=lime|glow-size=1px}}
|}
|}
<references/>
<references/>
See the list of [[:Category:Anti-submarine Weaponry|Anti-submarine Weaponry]] and [[:Category:ASW Aircrafts|ASW Aircrafts]] to better see what can help achieve OASW on a given ship.
See the list of [[:Category:Anti-submarine Weaponry|Anti-submarine Weaponry]] and [[ASW Aircraft]] to better see what can help achieve OASW on a given ship.
===Abyssals===
===Abyssals===
* [[Light Cruiser Tsu-Class Flagship]]
* [[Light Cruiser Tsu-Class Flagship]]
* [[Light Carrier Nu-Class]] (Elite III, Elite IV, all Kai Elite, all Kai Flagship)
* [[Light Carrier Nu-Class]] (Elite III, Elite IV, all Kai Elite, all Kai Flagship)
* [[Ancient Destroyer Princess]] (all variants)
* [[Ancient Destroyer Princess II]]
* [[Seaplane Tender Water Princess]] (all variants)
* [[Abyssal Kuriles Princess]] (all variants)
* [[Abyssal Kuriles Princess]] (all variants)
* [[Destroyer Forest Princess]] (Damaged variants unconfirmed)
* [[Destroyer Forest Princess]] (Damaged variants unconfirmed)
* [[American Destroyer Princess]] (most variants)
Other abyssals cannot perform OASW.
Other abyssals cannot perform OASW.</onlyinclude>
=Opening Torpedo Salvo=
=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:
Opening Torpedo salvo has the following trigger conditions:
* If the ship is a Submarine, then it must have Lv.10 or higher.
* '''The ship is a Submarine ([[SS]]/[[SSV]]), at Lv.10 or higher.
** While other Abyssal ships are Lv.1, all Abyssal Submarines are Lv.50.
** While other Abyssal ships are Lv.1, all Abyssal Submarines are Lv.50,
** Abyssal submarines have an additional requirement of being '''Elite''' or '''Flagship''' tier
** Abyssal submarines have an additional requirement of being '''"Elite"''' or '''"Flagship"''' tier.
* Otherwise, it must have a Midget Submarine equipped.
* '''The ship is equipped with a {{Minisub}} [[Midget Submarine]].
** This includes {{EquipmentLink|Type A Kouhyouteki}}, {{EquipmentLink|Type C Kouhyouteki}} and the {{EquipmentLink|Type D Kouhyouteki Kai (Kouryuu Kai)}} for the allied fleets, and {{EquipmentLink|Abyssal Cuttlefish Torpedo}} for the Abyssal fleets.
** Midget Submarines are the {{EquipmentLink|Type A Kouhyouteki}}, {{EquipmentLink|Type C Kouhyouteki}}, and {{EquipmentLink|Type D Kouhyouteki Kai (Kouryuu Kai)}}.
** The [[Abyssal Cuttlefish Torpedo]] counts as such for Abyssals, with other Abyssal equipment such as [[High-speed Abyssal Torpedo mod.2]], despite being classified as Midget Submarine, do not enable oTorp.
* For [[Combined Fleet]]s, only ships in the escort fleet can perform oTorps.
**This does not always apply to Abyssals, with many being able to perform them from the main fleet.
This phase follows the same rules as [[Combat/Day_Battle#Closing_Torpedo_Salvo|Closing Torpedo Salvo]], with some exceptions:
This phase follows the same rules as [[Combat/Day_Battle#Closing_Torpedo_Salvo|Closing Torpedo Salvo]], with some exceptions:
* Ships at Moderate or Heavy Damage can still fire torpedoes.
* Ships at '''{{Chuuha}}''' or '''{{Taiha}}''' 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".
* If only submarines are left in the opposing fleet, torpedoes will randomly target them, never dealing damage, and always being displayed as "miss".
After the Opening Torpedo Salvo, the Day Battle Shelling starts (if there are any remaining ships on either side left).
After the Opening Torpedo Salvo, the Day Battle Shelling starts (if there are any remaining ships on either side left).
==Atoll Nodes==
{{:Ka-Tsu}}
=See Also=
{{Mechanics}}
{{Mechanics}}