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User:Jigaraphale/Sandbox/13

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Anti-Air Cut-in

 
Akizuki performing the ID 1 (HHR) AACI.

Using special equipment setups, ships may perform one of multiple special anti-air maneuvers during Stage 2. These moves are often referred to as AA Cut-ins, or AACI due to the way the equipment is displayed in the screen before they are performed. Particular AACI are often referred to by their acronym, such as BBR for AACI 5.

AACI grants a multiplier to the Fixed Shootdown of all Allied Fleet ships regardless of what ship uses it, referred to as K-value. On top of that effect, AACI will remove a fixed number of planes from each enemy bomber slot. These effects make depleting the entirety of enemy bombers much more feasible.

Although several ships can be equipped with a proper AACI setup, only one ship can perform an AACI. If Stage 2 happens multiple times, like in an Air Battle node, then each Air Phase's Stage 2 might roll an AACI.

If the enemy fleet has a valid setup, it may as well activate an AACI. If that happens, an animation will not be shown, but the effects will function normally. It can activate during the regular airstrike phase, but not during LBAS phases.

  • There is a bug that allows enemy ships to activate AACI even if they were sunk[1].

The trigger chance of a given AACI is solely determined by its ID (its API value), and is arbitrary. Fleet AA, Ship AA, Adjusted AA, Air State, or any other parameter like Luck and LoS have no bearing in AACI trigger rates. Most trigger chances were datamined from KanColle Vita, and tests in the Browser version corroborated the results.

  •  Air is used to indicate an Air Radar.
    • Any Radar with   AA stat of 2 or higher is considered an Air Radar, even if not explicitly stated by the game.

oui

AACI Patterns
ID Priority
Order 		Type Shot down
per slot 		K-value Rate Users Notes
None - +1A = 1, B = 0 1.0 N/A Player's fleet only Triggers if no other AACI is activated
1 11      Air +8A = 3, B = 5 1.7 65% Akizuki-class HA guns x2 + Air Radar
2 16    Air +7A = 3, B = 4 1.7 58% HA guns + Air Radar
3 26     +5A = 2, B = 3 1.6 50% HA guns x2
4 15       Air +7A = 5, B = 2 1.5 52% Battleships Large Main Gun + AA Shell + AAFD + Air Radar
5 27  8+ AA  8+ AA  Air +5A = 2, B = 3 1.5 55% All
(except Akizuki-class) 		HA guns (≥8 AA) x2 + Air Radar
6 28       +5A = 4, B = 1 1.45 40% Battleships Large Main Gun + AA Shell + AAFD
7 36      Air +4A = 2, B = 2 1.35 45% All
(except Akizuki-class) 		HA guns + AAFD + Air Radar
8 33  8+ AA  Air +5A = 2, B = 3 1.4 50% HA guns (≥8 AA) + Air Radar
9 45     +3A = 1, B = 2 1.3 40% All HA guns + AAFD
10 6    9+ AA  Air +9A = 3, B = 6 1.65 60% Maya Kai Ni  HA guns + AA Gun (≥9 AA) + Air Radar
11 9    9+ AA +7A = 2, B = 5 1.5 55% HA guns + AA Gun (≥9 AA)
12 40  9+ AA  3+ AA  Air +4A = 1, B = 3 1.25 45% All AA Gun (≥9 AA) + AA Gun (≥3 AA) + Air Radar
13 34  8+ AA  9+ AA  Air +5A = 1, B = 4 1.35 35% All
(except Maya Kai Ni ) 		HA guns (≥8 AA) + AA Gun (≥9 AA) + Air Radar
14 25      Air +5 1.45 62% Isuzu Kai Ni  HA guns + AA Gun + Air Radar
15 35     +4 1.3 55% HA guns + AA Gun
16 24      Air +5 1.4 62% Kasumi Kai Ni B  &
Yuubari Kai Ni  (not Toku/D 
 ) 		HA guns + AA Gun + Air Radar
17 42     +3 1.25 55% Kasumi Kai Ni B  HA guns + AA Gun
18 43  9+ AA +3 1.2 60% Satsuki Kai Ni  AA Gun (≥9 AA)
19 21  7- AA  9+ AA +6 1.45 58% Kinu Kai Ni  HA guns (≤7 AA) + AA Gun (≥9 AA)
20 37  9+ AA +4 1.25 65% AA Gun (≥9 AA)
21 22    Air +6 1.45 60% Yura Kai Ni  HA guns + Air Radar
22 44  9+ AA +3 1.2 60% Fumizuki Kai Ni  AA Gun (≥9 AA)
23 46  3~8 AA +2 1.05 80% UIT-25/I-504 
  		AA Gun (3 to 8 AA)
24 38    3~8 AA +4 1.25 40% Tenryuu-class Kai Ni 
  		HA guns + AA Gun (3 to 8 AA)
25 10    Air   +8 1.55 60% Ise-class Kai/Ni 
 
 
  		RLK2  + Air Radar + AA Shell
26 14    Air +7 1.4 55% Yamato-class Kai Ni 
 
  		10cm Twin HA Mount Kai  + Air Radar
27 19      Air +6 1.55 55% (5%)when accounting for ID 8 rate Ooyodo Kai  10cm Twin HA Mount Kai  + RLK2  + Air Radar
28 29    Air +5 1.4 55% Ise-class Kai/Ni 
 
 
  &
Musashi Kai/Ni 
  		RLK2  + Air Radar
29 23    Air +6 1.55 60% Hamakaze B Kai  &
Isokaze B Kai  		HA guns + Air Radar
30 32       +4 1.3 45% Tenryuu Kai Ni  &
Gotland Kai/Andra 
  		HA guns x3
31 41     +3 1.2 52% Tenryuu Kai Ni  HA guns x2
32 39    
OR
   
OR
    		+4 1.2 50% Royal Navy Ships &
Kongou-class Kai Ni/B/C 		16inch Mk.I Triple + FCR  + QF 2-pounder 
OR
20-tube 7inch UP  + 20-tube 7inch UP  / QF 2-pounder 
33 31    4+ AA +4 1.35 45% Gotland Kai/Andra 
  		HA guns + AA Gun (≥4 AA)
34 12     +8 1.6 55% Fletcher-class 2 5inch Mk.30 + GFCS Mk.37 
35 17    
OR
    		+7 1.55 55% 5inch Mk.30 + GFCS Mk.37  + 5inch Single Gun Mount Mk.30  / Kai 
36 37      
OR
     
OR
      		+7 1.55 50% 2 5inch Single Gun Mount Mk.30  / Kai  + GFCS Mk.37 
37 30     +5 1.45 40% 2 5inch Single Gun Mount Mk.30 Kai  (not base)
38 1     +11 1.85 57% Atlanta-class  2 GFCS Mk.37 + 5inch Twin CD 
39 2     +11 1.7 57% GFCS Mk.37 + 5inch Twin CD  + 5inch Twin CD 
40 3      
OR
     
OR
      		+11 1.7 56% 2 5inch Twin CD  / GFCS Mk.37 + 5inch Twin CD  + GFCS Mk.37 
41 5    
OR
   
OR
    		+10 1.65 55% 2 5inch Twin CD  / GFCS Mk.37 + 5inch Twin CD 
42 4      Sp  6+ AA +11 1.65 ?% Yamato-class Kai Ni 
 
  		Very large radar 
  + 1 or 2 10cm Twin HA Gun CD  + 0 or 1 AA Gun (≥6 AA)
43 7      Sp +9 1.6 ?%
44 13    Sp  6+ AA +7 1.6 ?%
45 20    Sp +6 1.55 ?%
46 8    9+ AA  Air
OR
   9+ AA  Air 		8 1.55 49.5% Haruna Kai Ni B  35.6cm Twin K3 (Dazzle)  / 35.6cm Twin K4  + AA Gun (≥9 AA) + Air Radar

oui²

Notes
  • If multiple ships can trigger AACI, the ship that rolls the highest ID number takes priority.
    • If ID numbers are tied, priority goes by fleet slot order from top to bottom.
  • If a single ship fulfills multiple AACI requirements:
    • A single roll is done to check for all AACIs.
    • This means that an AACI with higher priority and higher trigger rate completely blocks lower priority AACI from activating.
      • For example, Akizuki with a  8+ AA 8+ AA Air setup fulfills the requirements of the AACIs with ID 1, 2, 3, 5, and 8, with 1 being the highest priority. Due to this, the only ID that Akizuki can trigger is 1, because a success will activate it, and a failure implies that the roll wouldn't meet the 58%, 50%, 55%, and 50% trigger rates as it has failed to meet a 65% rate roll.
    • Conversely, an AACI with lower priority but higher trigger rate has a chance of occurring, if the roll fails to pass the higher priority AACI.
      • For example, Isokaze B Kai with  8+ AA 8+ AA Air fulfils 5 (55% rate) and 29 (60% rate), with 5 having priority. This means that in total, 5 will occur 55% of the time, and 29 will occur the leftover 5% of the time (60% - 55%).
    • Priority is: (1 > 2 > 3, 10 > 11, 14 > 15, 16 > 17, 19, 21, 25, 42 > 43 > 44 > 45) > 4 > 5 > 6 > 8 > 7 > (26 > 27 > 28, 29) > 9 > (33) > 12 > 13 > (18, 20, 22, 23, 30 > 31 > 24, 32)[2][3]
      • Examples:
        • Kinu Kai Ni can trigger both ID 20 and 19.
        • The same ship can activate IDs 20, 5, and 29.
      • Note: At some point during 2018-2019(?), priority was changed from 7 > 8 to 8 > 7. Prior to this, both 7 and 8 could be triggered with  8+ AA  Air[4], whereas now only 8 can be triggered.


Sequential AACIs

The Sequential AACIs were the AACIs introduced with the implementation of Johnston, allowing to a single ship to roll multiple AACI IDs at once, greatly increasing the trigger rate. Since the 26/05/2023 update, this mechanic is defunct, being available to all ships.

  • See here for more details.


Main Sources: [1] [2]

  1. ↑ https://twitter.com/Divinity_123/status/1565631534362664960
  2. ↑ https://docs.google.com/spreadsheets/d/1YUppVErQj7P9f9-ddpdR-e7fTaycjSK9-x4GE9ibCrA/edit#gid=1156988467, TsunDB
  3. ↑ https://twitter.com/syoukuretin/status/1535102184530276352
  4. ↑ https://gyazo.com/2472468c10c0dacd28a493a79ff140da
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