User:Jigaraphale/Sandbox/13

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.

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.

• is used to indicate any High-Angle Gun (dual-purpose guns/HA guns), including Main HA Guns and Secondary HA Guns

• is used to indicate any AA Fire Directors
  .

• is used to indicate any AA Gun.

• 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.

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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

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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+ AA8+ AAAir 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+ AA8+ AAAir 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)
    • 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+ AAAir, 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]