View source for Combat/Artillery Spotting

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Artillery Spotting, commonly referred to as ''ArtySpot'', ''Daytime CI'', or simply ''Spotting'', is a series of special attacks that allow ships with specific equipment setups to perform Cut-in attacks during the Day Battle. These attacks grant '''post-cap''' damage bonuses as well as increased shelling accuracy.

The Carrier-equivalent for Artillery Spotting is '''Aircraft Carrier Cut-in (CVCI)'''. Mechanically, they share the same core mechanics, but have different trigger conditions.

=Artillery Spotting=
Artillery Spotting is a feature for ships that can launch {{Seaplane}} [[Seaplane]]s. Using special equipment setups, those ships may perform one of multiple special attacks. These attacks are often referred to as Cut-ins due to the way the equipment is displayed in the screen before the attacks are performed. Particular Cut-ins are often referred to by their acronym, such as APCI for Main AP Shell Cut-in, Sec CI for Secondary Gun Cut-in, etc.

Cut-ins may be activated during a ship's turn and will override its normal shelling attack. Do note that the specific equipment being shown during the Cut-ins have no influence on the damage output.

==Trigger Conditions==
[[File:Air_Superiority_Aquired.png|thumb|right|The fleet attains Air Supremacy. Artillery Spotting and Aircraft Carrier Cut-ins can now be performed]]
* The fleet must have attained {{color|green|'''Air Superiority (AS)'''}} or {{color|green|'''Air Supremacy (AS+)'''}} Air State.
** For details on Air State, please refer to [[Aerial Combat#Stage 1 - Battle for Air Superiority|Aerial Combat - Stage 1]]
* The ship must be equipped with at least one {{SPR}}[[SPR|Seaplane Recon]] or {{SPB}}[[SPB|Seaplane Bomber]] on a slot with size '''higher than 0'''.
** {{SeaplaneFighter}} [[SPF|Seaplane Fighters]] or {{YellowPlane}} [[:Category:Carrier-based Reconnaissance Aircraft|Reconnaissance Aircraft]] '''do not''' enable Artillery Spotting.
** '''Main Suisei Cut-in''' specifically ignores this condition.
* The ship must be equipped with at least one {{RedGunHeavy}}{{RedGunMedium}}{{RedGunLight}}{{Main Green}} '''[[Main Gun]]'''.
* The ship must target another ship and attack it with Surface Shelling.
** ASW shelling has no Artillery Spotting setups.
* The ship must not be {{color|red|'''Heavily damaged (大破)'''}}

==Setups and Attack Types==
[[File:Main_Main_Cutin.png|thumb|right|Musashi performing Main AP Shell Cut-in (APCI)]]
Different setups have different conditions, trigger rates, damage, and number of hits. Cut-ins are determined by the attack's prerequisites as well as the previously stated trigger conditions.

For a given Cut-in, any other equipment can be added on the remaining slots. Be wary that adding certain equipment may change the Cut-in that will be rolled. Meeting prerequisites for multiple Cut-ins grants each a chance to be activated: in this case, the Cut-ins will be rolled in order of priority from '''top to bottom'''.

For clarity purposes: 
* {{Large Gun}} is used to indicate a '''[[Main Gun]]''' of ''any size'',
* {{Seaplane}} is used to indicate a '''"[[Seaplane]]" ''' ([[SPR|Recon]] or [[SPB|Bomber]]),
* {{Sec Gun}} is used to indicate a '''[[Secondary Gun]]''' of ''any size'',
* {{AP Shell}} is used to indicate an '''[[AP Shell]]''',
* {{Radar}} is used to indicate a '''[[Radar]]''' of ''any type'',
* {{RedPlane}} is used to indicate any '''{{Equipment/Link|Suisei Model 22 (634 Air Group)|Suisei Model 22 (634 Air Group/Skilled)|Suisei Model 12 (634 Air Group w/ Type 3 Cluster Bombs)|text="634 Air Group" Suiseis}}'''.
* {{ZuiunPlane}} is a custom icon used to indicate any '''Zuiun''' variant:
{{Zuiun}}


{|class="wikitable" style="text-align:center; margin:auto"
!Attack Type
!Prerequisites
![[Damage_Calculations#Damage_Formula|Post-cap]]<br>Damage<br>Modifier
!Accuracy<br>Modifier
!Hits
!Notes
|-
!style="background-color:#ff7f50" |{{color|black|Main Zuiun Cut-in<br>(Zuiun CI)}}
|{{RedGunHeavy}}{{ZuiunPlane}}{{ZuiunPlane}}
|1.35||?||1
|rowspan=2|{{Ship/Link|Ise/Kai Ni|Hyuuga/Kai Ni|text=''Ise''-class Kai Ni|link_class=Ise}} only
|-
!style="background-color:#ff7f50" |{{color|black|Main Suisei Cut-in<br>(Suisei CI)}}
|{{RedGunHeavy}}{{RedPlane}}{{RedPlane}}
|1.3||?||1
|-
!style="background-color:#81c784" |{{color|black|Main AP Shell Cut-in<br>(APCI)}}
|{{RedGunHeavy}}{{RedGunHeavy}}{{Seaplane}}{{RedAmmo}}
|1.5||1.2||1
|
|-
!style="background-color:gold"|{{color|black|Secondary AP Shell Cut-in<br>(Sec APCI)}}
|{{RedGunHeavy}}{{YellowGun}}{{Seaplane}}{{RedAmmo}}
|1.3||1.3||1
|
|-
!style="background-color:gold"|{{color|black|Secondary Radar Cut-in<br>(Radar CI)}}
|{{RedGunHeavy}}{{YellowGun}}{{Seaplane}}{{Radar}}
|1.2||1.5||1
|
|-
!style="background-color:gold"|{{color|black|Secondary Cut-in<br>(Sec CI)}}
|{{RedGunHeavy}}{{YellowGun}}{{Seaplane}}
|1.1||1.3||1
|
|-
!style="background-color:#59f"|{{color|black|Double Attack<br>(DA)}}
|{{RedGunHeavy}}{{RedGunHeavy}}{{Seaplane}}
|1.2||1.1||2
|
|}

* If all rolls fail or the ship meets no Cut-in requirements, then it'll perform a Single Attack: a default 1 hit, no damage modifier shelling attack.
* If an Artillery Spotting attack is evaded, it will deal [[Damage_Calculations#Chip_Damage|chip damage]] instead.
* If valid set-ups for both Suisei-CI and Zuiun-CI are used, only the Zuiun-CI may trigger.

=Aircraft Carrier Cut-In=

Aircraft Carrier Cut-in, or CVCI for short, is a feature for ships that can launch {{BluePlane}}{{RedPlane}}{{GreenPlane}}Carrier-based planes. Similar to Artillery Spotting, using special equipment setups, those ships may perform one of multiple special attacks. 

CVCI may be activated during a ship's turn and will override its normal shelling attack.

==Trigger Conditions==

* The fleet must have attained <span style="color:green;">'''Air Superiority (AS)'''</span> or <span style="color:green;">'''Air Supremacy (AS+)'''</span> Air State.
** For details on Air State, please refer to [[Aerial Combat#Stage 1 - Battle for Air Superiority|Aerial Combat - Stage 1]]
* The carrier must fulfill one of the equipment setups.
* The carrier must be shelling a '''surface ship'''.
** Installations cannot be attacked by CVCI.

==Setups and Attack Types==
[[file:CVCI_Example.png|thumb|right|Zuihou performing Fighter-Bomber-Attacker Cut-in (FBA)]]
Different setups have different conditions, trigger rates, damage, and number of hits. Cut-ins are determined by the attack's prerequisites as well as the previous state trigger conditions.

For a given Cut-in, any other equipment can be added to the remaining slots. Be wary that adding certain equipment may change the Cut-in that will be rolled. Meeting prerequisites for multiple Cut-ins grants each a chance to be activated: in this case, the Cut-ins will be rolled in order of priority from '''top to bottom'''.

* {{BluePlane}} is used to indicate a '''[[Torpedo Bomber]]'''. In the game, is referred to as ''Attacker''.
* {{RedPlane}} is used to indicate a '''[[Dive Bomber]]'''. In the game, is referred to as ''Bomber''.
* {{GreenPlane}} is used to indicate a '''[[Fighter]]'''.

{|class="wikitable" style="text-align:center; margin:auto"
!Attack Type
!Prerequisites
![[Damage_Calculations#Damage_Formula|Post-cap]]<br>Damage<br>Modifier
!Accuracy<br>Modifier
!Hits
|-
!style="background-color:#81c784" |{{color|black|Fighter-Bomber-Attacker<br>(FBA)}}
|nowrap|{{GreenPlane}}{{RedPlane}}{{BluePlane}}
|1.25||1.2~1.3?||1
|-
!style="background-color:#ff7f50" |{{color|black|Bomber-Bomber-Attacker<br>(BBA)}}
|nowrap|{{RedPlane}}{{RedPlane}}{{BluePlane}}
|1.2||1.2~1.3?||1
|-
!style="background-color:#59f" |{{color|black|Bomber-Attacker<br>(BA)}}
|nowrap|{{RedPlane}}{{BluePlane}}
|1.15||1.2~1.3?||1
|}

* If all rolls fail or the ship meets no Cut-in requirements, then it'll perform a Single Attack: a default 1 hit, no damage modifier shelling attack.
* If a CVCI attack is evaded, it will deal [[Damage_Calculations#Chip_Damage|chip damage]] instead.


'''Note:''' The Critical Damage modifier granted by Aircraft [[Proficiency#Critical Bonus|Proficiency]] works differently when performing a CVCI.

=Trigger Rates=
Artillery Spotting and Aircraft Carrier Cut-Ins share the same trigger rate formula. The chance of successfully rolling and triggering a cut-in is mainly affected by the [[Air State]] and the "raw [[LoS]]", as well as some other factors like the type of CI, the ship's luck, and the Recons/Bombers currently in the fleet.

{|class="wikitable mw-collapsible mw-collapsed" width="100%"
!colspan=2|Trigger Rates
|-
!width=20px|<div style=writing-mode:vertical-rl;transform:rotate(180deg); text-align:left;>Trigger rate</div>
|
The chance for a ship to roll a cut-in and perform it is given by:
{|style="padding:10px; margin:20px; border:1px solid orange; border-radius:10px"
|valign="center"|  <math>\text{Trigger %}_\text{Cut-in} = \dfrac{\text{Base}_\text{ship}}{\text{Base}_\text{attack}} \times 100</math>
|}
|-
!width=20px|<div style=writing-mode:vertical-rl;transform:rotate(180deg); text-align:left;>''Base ship</div>
|
{|style="padding:10px; margin:20px; border:1px solid orange; border-radius:10px"
|valign="center"|  <math>\text{Base}_\text{ship} = \left \lfloor 
10 + \lfloor \sqrt{\text{Luck}} \rfloor + \text{Mod}_\text{AS1} + \text{Mod}_\text{Flag} 
+
\left \lfloor 
\left(
\text{LoS}_\text{Fleet} + \text{Mod}_\text{AS2} \times \text{LoS}_\text{Ship}
\right)
\right \rfloor \times \text{Mod}_\text{AS3}
\right \rfloor 
</math>
|}

;With
* <math>\text{Mod}_\text{ASx}</math> the [[Air State]] modifiers:
{|class="wikitable"
!Mod!!AS!!AS+
|-
|<math>\text{Mod}_\text{AS1}</math>||0||10
|-
|<math>\text{Mod}_\text{AS2}</math>||1.2||1.6
|-
|<math>\text{Mod}_\text{AS3}</math>||0.6||0.7
|}

* <math>\text{Mod}_\text{Flag}</math> being '''15''' if the ship is the flagship, '''0''' otherwise,
* <math>\text{LoS}_\text{Ship}</math> the Sum of the equipment's displayed base LoS values (excluding [[Visible Bonus]]es) on the attacking ship,
* <math>\text{LoS}_\text{Fleet} = \left \lfloor \sqrt{\text{Total}_\text{LoS}} + \frac{\text{Total}_\text{LoS}}{10} \right \rfloor</math>
** Where <math>\text{Total}_\text{LoS} = \sum^{\text{All ships}}\text{Base}_\text{LoS} + \sum^{\text{All Recons/Bombers}}\text{Equip}_\text{LoS} \times \lfloor\sqrt{\text{Count}_\text{Plane}}\rfloor</math>
*** <math>\text{Base}_\text{LoS}</math> being the ships' base LoS value without any equipment,
*** <math>\text{Equip}_\text{LoS}</math> being the displayed base LoS value of Recons/Bombers (excluding [[Visible Bonus]]es) currently in the fleet.
*** <math>\text{Count}_\text{Plane}</math> being the count of each individual Recons/Bombers currently in the fleet.
|-
!width=20px|<div style=writing-mode:vertical-rl;transform:rotate(180deg); text-align:left;>''Base attack</div>
|
<math>\text{Base}_\text{attack}</math> is the "Value" used by each type of Cut-in:
{|class="wikitable"
!<math>\text{Base}_\text{attack}</math>
!Value
!''% per Base Value
|-
!colspan=3|Artillery Spotting
|-
|Main Zuiun Cut-in||120||0.83%
|-
|Main Suisei Cut-in||130||0.77%
|-
|Main AP Shell Cut-in||150||0.66%
|-
|Secondary AP Shell Cut-in||140||0.71%
|-
|Secondary Radar Cut-in||130||0.77%
|-
|Secondary Cut-in||120||0.83%
|-
|Double Attack||130||0.77%
|-
!colspan=3|Aircraft Carrier Cut-ins
|-
|Fighter-Bomber-Attacker||125||0.86%
|-
|Bomber-Bomber-Attacker||135||0.80%
|-
|Bomber-Attacker||150||0.66%
|}
|}

=See Also=
{{Mechanics}}