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Combat/Anti-Installation

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Revision as of 15:28, 17 August 2022 by EchoHolic (talk | contribs) (→‎Landing Craft Improvement Modifier)

Installations are an enemy-type representing "land-based installations", and are characterized by high armor and high HP. They are difficult to handle using normal anti-ship setups and require specific setups in order to be destroyed. Installations are typically found as bosses or as boss escorts.

General Characteristics

  • Installations cannot perform or benefit from flagship protection.
  • They have different damage statuses instead of the normal ones used for ships.
Ship Damage Label Installation Damage Label
Lightly Damaged
(小破) 		Confused
(混乱)
Moderately Damaged
(中破) 		Damaged
(損害)
Heavily Damaged
(大破) 		Broken
(損壊)
Sunk
(撃沈) 		Destroyed
(破壊)

Installation Classification

Installations are classified by two categories: Ship Type (BB, BBV, CV) and Toughness (Soft Skin or Hard Skin).

Ship Type

Type Characteristics
Battleship (BB) Examples are Artillery Imps  and Central Princess .
  • Uses the surface shelling formula for calculating damage.
  • Uses the shelling attack animation in day and night battle.
  • Can continue attacking when moderately damaged.
Aviation Battleship (BBV) Most installations fall under this category.
  • Uses the carrier attack formula for calculating damage.
  • Uses the shelling attack animation in day and night battle.
  • Cannot attack during the day if moderately damaged or if there are no planes left.
  • Forced to attack submarines if they have equipment with  Anti-Submarine stat.
Carrier (CV) Example is Lycoris Princess .
  • Uses the carrier attack formula for calculating damage.
  • Uses the carrier attack animation in day battle and the shelling animation at night.
  • Cannot attack during the day if moderately damaged or if there are no planes left.
  • Do not enable the 2nd shelling phase if there is no battleship present.

Skin Toughness

Type Characteristics
Soft Skin Examples are Supply Depot Princess , Harbour Princess  and Northern Princess .
  • Takes a lot of damage from  AA Shells 
          and less from other Anti-Installation equipment.
    • This weakness allows battleships and heavy cruisers to easily deal with these installation types.
    • Still takes a decent amount of damage from other anti-installation equipment.
  • Supply Depot Princess  has extra Post-Cap modifiers.
Hard Skin Examples are Isolated Island Demon , Artillery Imp , and Harbour Summer Princess .
  • Please note that event only installation might not be in one of these categories.

Attack Behavior

The targeting of installation follow some special rules.

Suport Expedition

  • Shelling Support expedition can attack Instllation.
  • It's unknown if torpedo support and ASW support will target installaion or not.

Air strike

  • Normal dive bombers can not attack installations during the air strike phase.
  • Only Anti-installation Dive Bombers can target installation.
  • It's unknown if ASW plane will prioritize Submarine or installation.
  Dive-Bombers that can attack installations

Carriers will only attack installations in the shelling phase if equipped with Torpedo Bombers or Anti-Installation Dive Bombers.

  • Additionally, carriers will attack installations if equipped with non-special dive bombers AND one of the special dive bombers below.
  • Any other dive bomber will completely disable shelling against installations even if the carrier has a torpedo bomber equipped.
  • This can be very useful to manipulate the targeting mechanic so the carriers attack important targets.
 
Ju 87C Kai
 
Prototype Nanzan
 
F4U-1D
 
FM-2
 
Ju 87C Kai Ni (w/ KMX)
 
Ju 87C Kai Ni (w/ KMX/Skilled)

 
Suisei Model 12 (634 Air Group w/ Type 3 Cluster Bombs)
AAR
 
Suisei Model 12 (w/ Type 31 Photoelectric Fuze Bombs)
AAR
 
Type 99 Dive Bomber Model 22
 
Type 99 Dive Bomber Model 22 (Skilled)
 
SB2C-3
 
SB2C-5
 
F4U-4
AAR

Shelling

  • Submarines can attack installations during shelling if equipped with a Special Type 2 Amphibious Tank .
    • They will only target instllations during the shelling phases.
    • They will be able to attack installations at night regardless of equipment.
    • Their low firepower makes them poor anti-installation ships.
  • Carriers are unable to perform CVCI on installations, even if equipped with anti-installation dive bombers.
  • Ise and Hyuuga can perform the suisei-CI against installation with any Dive Bomber.
  • Special Attacks behave like normal against installation.

Torpedo

  • Both opening and closing torpedoes can not target installations.
    • Opening and closing torpedoes will fail to trigger if only installation targets remain.

Night Battle

  • The torpedo stat is ignored when calculating night battle damage against installations. Please see Night Battle for more details.
    • This makes destroyers, light cruisers, and heavy cruisers much weaker unless equipped with anti-installation equipment.
  • When targeting installation the Cut-in choice will ignore any equiped torpedo.
    • Except Special DD Cut-in that include a main gun (torpedo stat is still considered equal to 0).
  • Night shelling Carrier Attacks will deal damage like they would to ships.
    • This include Ark Royal's night swordfish attack.
  • Air night attacks ignore all anti-installation bonus
    • The attack can target installations even if no anti-anstallation dive bombers is equiped

Damage Calculation

  • During day, damage is capped at 220 so any ship with a proper anti-installation setup will be able to hit the cap.
    • When facing hard-skinned installations, it is better for battleships to have AP shells instead of Type 3 because they will hit the day cap anyway.
  • Anti-installation is very important during night battle when the cap is raised to 360.
  • Torpedo stat is always counted as 0 when attacking installations. This applies to both airstrikes and night battles.
    • However improvement that give "Yasen" is taken into account.
  • Supply Depot Princess is the only known installation that takes post-cap damage from anti-installation equipment.
    • This makes her vulnerable to getting one shot by nuke setups. See below for details.
  • While dive bombers have a post-cap bonus during the air-strike, the low base damage means it is of limited effectiveness against high armor installations.
  • The Armor Percing modifier (post-cap) is effective against installation.

Calculation

Installations generally have a lot of HP and/or armor. But multiple different cumulative bonuses exist against them, allowing for massive damage when using the right set-ups. These bonuses are divided into 5 groups and are calculated in the following order[1]:

  1. Ship type bonuses
  2. General multiplicative bonuses
  3. Specific equipment bonuses:
    1. 11th regiment bonuses
    2. M4A1 bonuses
    3. Ho-Ni bonuses
    4. Landing craft synergy bonuses
  4. General Flat bonuses
  5. Post-cap bonuses against Supply Depot Princess 
  • The order of bonuses is still being researched so it might change in the future

Pre-cap Shelling:

  • [math]\displaystyle{ \text{Atk}_\text{pre-cap} = \Big( \big[ \big( [ ( \text{Atk}_\text{base} {\color{tomato} \times \text{A0}} {\color{DeepSkyBlue} + \text{B0}} ) {\color{tomato} \times \text{A1}} {\color{DeepSkyBlue}} ] {\color{tomato} \times \text{A21}} {\color{DeepSkyBlue} + \text{B21}} \big) {\color{tomato} \times \text{A22}} {\color{DeepSkyBlue} + \text{B22}} \big] {\color{tomato} \times \text{A23}} {\color{DeepSkyBlue} + \text{B23}} \Big) {\color{tomato} \times \text{A24}} {\color{DeepSkyBlue} + \text{B24} + \text{B1}} }[/math]

Pre-cap Carrier Shelling:

  • [math]\displaystyle{ \text{Atk}_\text{pre-cap} = \Big[ \Big( \big[ \big( [ \text{Atk}_\text{base} {\color{tomato} \times \text{A1}} ] {\color{tomato} \times \text{A21}} {\color{DeepSkyBlue} + \text{B21}} \big) {\color{tomato} \times \text{A22}} {\color{DeepSkyBlue} + \text{B22}} \big] {\color{tomato} \times \text{A23}} {\color{DeepSkyBlue} + \text{B23}} \Big) {\color{tomato} \times \text{A24}} {\color{DeepSkyBlue} + \text{B24} + \text{B1}} +(\text{DB} \times 1.3) + 15 \Big] \times 1.5 +25 }[/math]

Cap

  • [math]\displaystyle{ \text{Atk}_\text{cap} = \text{Cap} \times \sqrt{\text{Atk}_\text{pre-cap} - \text{Cap}} }[/math]

Post-cap:

  • [math]\displaystyle{ \text{Atk}_\text{post-cap} = \text{Atk}_\text{cap} {\color{tomato} \times \text{C}} }[/math]

With:

  • [math]\displaystyle{ \text{Atk}_\text{base} }[/math] the base attack deffined here,
  • A & C the Multiplicative bonuses,
  • B the Flat bonuses,
  • A & B being pre-cap bonuses,
  • C being post-cap bonuses.
  • [math]\displaystyle{ \text{DB} }[/math] being the   bombing stat of Anti-installation Dive Bomber only
  • [math]\displaystyle{ \text{Cap} }[/math] is:
    • 220 during day,
    • 360 during night.
  1. ↑ https://docs.google.com/document/d/1mXGyJ3yeNWeOmuGZQrXkcuGSuSEQYqmKhPelHMkzkGI/edit

Bonuses

Ship type bonuses

Ship type Target Bonuses
A0 DD/CL Artillery Imp x1.4
B0 SS/SSV Any installation +30

General multiplicative bonuses

These bonuses are the only ones that depend on the enemy targeted.

A1
Installation Type Soft-Skinned      
Number Equipped Single Multiple Single Multiple Single Multiple Single Multiple
  AA Shells 
  		2.5 1.75/1.7? 1.75
  AP Shells 
 
  		1.85 1.3
  WG42 (Wurfgerät 42)  1.3 1.82 1.4 2.1 1.6 2.72 1.4 1.68
Anti-Ground Rocket Launcher 
  		1.25 1.875 1.3/1.5? 2.145 1.5 2.7 1.25 1.75
  ASW Mortars 
  		1.2 1.56 1.2 1.68 1.3 1.95 1.1 1.265
  Landing Craft Type Multiplier 1.4 1.8 1.8 1.7
  Landing Craft Improvement Multiplier 1 + (Average   /50)
(  1.2x)
  Toku Daihatsu Landing Craft  1.15 1.15 1.15 1.2
DLC + T89 tank 
Toku DLC + Ho-Ni tank  		1.5 1.95 1.2 1.68 1.5 2.1 1.6 2.4
DLC + Panzer  1.5 1.2 1.5 1.6
Toku DLC + 11th Reg 
M4A1 DD  1.1 1.8 2.0 2.0
Armed Daihatsu 
Soukoutei 

☀ Day Only

1.1 1.21 1.3 1.43 1.3 1.56 ?
  Ka-Mi tank  1.5 1.8 2.4 3.24 2.4 3.24 2.8 4.2
  Amphibious Tank Improvement Multiplier 1 + (Average   /30)
(  1.33x)
  Anti-Installation Dive Bombers 1.4 2.45 1.5 3.0 1.3
   Seaplane Bombers/Fighters 1.2 1.5 1.3

Notes

  • The Improvement Bonus takes the average for all Landing Crafts equipped on the ship.
  • The Improvement Bonus takes the average for all Kami equipped on the ship.
  • The devs have mentioned that   Rations 
     
          consumed by a girl "affect landing crafts' morale"[1].
  1. ↑ https://twitter.com/KanColle_STAFF/status/715840109103484928

Specific equipment bonuses

The following multipliers are pre-cap.

Equipment Multiplicative bonus Flat Bonus
Toku DLC Tank Bonus A21 B21
 Toku DLC + 11th Reg 

 Toku DLC + Ho-Ni tank 

1.8 25
Sherman Bonus A22 B22
 M4A1 DD  1.4 35
Ho-Ni Tank Regiment Bonus A23 B23
 Toku DLC + Ho-Ni tank  1.3 42
DLC Synergy Bonus A24 B24
 Armed Daihatsu 
Soukoutei  		Group 1[1] Group 2[2] Multiplicative bonus Flat Bonus
Only one 1 of Any 1.2 10
Both 1 0 1.32 12
0 1 1.44 13
2 of any 1.56 15
  1. ↑ Daihatsu Landing Craft , Toku Daihatsu Landing Craft , DLC + T89 tank , Toku DLC + Ho-Ni tank , DLC + Panzer 
  2. ↑ Ka-Mi tank , Toku DLC + 11th Reg 

Flat Damage Bonuses

B1
Amount Equipped 1 2 3 4
  WG42  75 110 140 160
Anti-Ground Rocket Launcher  55 115 160 190
Anti-Ground Rocket Launcher CD  80 170 230 260
  ASW Mortar  30 55 75 90
ASW Mortar CD  60 110 150 180

Post-Cap Bonus

Supply Depot Princess  is currently the only installation to have a post-cap bonus for shelling. These bonuses are applied after the soft damage cap.
Note: Supply Depot Princess is treated as a soft-skinned installation for purposes of Pre-Cap Bonuses.

C
Installation Type  
Number Equipped Single Multiple
  WG42  1.25 1.625
Anti-Ground Rocket Launcher 
  		1.2 1.68
  ASW Mortars 
  		1.15 1.38
  Landing Craft Type Multiplier 1.7
  Landing Craft Improvement Multiplier [1 + (Average   /50)] N Any Landing Craft: 1
Landing Craft + Ho-Ni : 2
DLC (Panzer II/NA) : 3
  Toku Daihatsu Landing Craft  1.2
DLC + T89 tank 
Toku DLC + Ho-Ni tank  		1.3 2.08
DLC + Panzer  1.3
Toku DLC + 11th Reg 
M4A1 DD  1.2
Armed Daihatsu 
Soukoutei  		1.5 1.65
  Ka-Mi tank  1.7 2.55
  Amphibious Tank Improvement Multiplier 1 + (Average   /30)
(  1.33x)

Landing Craft Improvement Modifier

  • The Ho-Ni and Panzer have the special property of reapplying the Landing Craft Improvement Multiplier again during damage calculations; twice for the Ho-Ni, and three times for the Panzer.
  • As neither equipment are currently improvable, they lower the average improvement multiplier, but compensate through this unique property.
  • Assuming two landing crafts are equipped, one being the Ho-Ni/Panzer, and the other being fully improved (★MAX):
    • The improvement bonus when the Ho-Ni is equipped is 1.21x
    • The improvement bonus when the Panzer is equipped is 1.331x

Land Base Bonus

For the formula see the LBAS page. The bonuses work for all bombers on the land base (except maybe jets).

Installation Targeted      
Pre-cap Multiplicative [math]\displaystyle{ {\color{tomato}\text{Mod}_\text{AIpre}} }[/math] -
1.18 1.6 -
Post-cap [math]\displaystyle{ {\color{tomato}\text{Mod}_\text{AIpost3}} }[/math] [math]\displaystyle{ {\color{tomato}\text{Mod}_\text{AIpost1}} }[/math]
1.7 1.55 2.1
Flat - [math]\displaystyle{ {\color{DeepSkyBlue}\text{Mod}_\text{AIpost2}} }[/math]
- - 100

Air strike

We are lacking information on opening air-strike.

Equipment Setups

Below are recommended equipment setups for anti-installation. The equipment order is illustrative and does not matter much.

As a general rule if there is:

  • One Anti-Ground Artillery   equiped use a WG42
  • Mutiple Anti-Ground Artillery   equiped use Shipborne Model Type 4 20cm Anti-ground Rocket Launcher (or CD)

" Nuke setups" describe any setups using at least 1 Anti-ground Rocket Launcher 
 
   , 1 Landing Craft  , and 1 Tank   .

  • Such setup has a powerful anti-installation power against all installations but is hampered by the daytime damage cap.
  • It can be further improved by using more of those types of equipment when applicable.
  • Using a Tank    or a Landing Craft with specific bonus instead of a ground rocket gives better damage, however it's advised to rather distribute these assets instead.

All the "surface" anti-installation setups can be further enhanced by using them in Special Attacks, especially Nelson's Touch.

Equipment Setup Notes
BB/FBB/BBV
     The basic battleship setup. Because they can reach the damage cap easily, they do not benefit much from anti-installation equipment. The standard artillery spotting setup will allow them to be effective against all other targets including the installation.
     This is an option when facing soft-skinned installations. Taking an AA shell will limit the battleship's effectiveness against all other targets.
      Yamato-class Kai Ni & Ise-class Kai Ni only.
  • "Best of both worlds" for 5-slot battleships.
    
     		Nagato-class Kai Ni & Yamato Kai Ni Juu only.
  • The landing craft/amphibious tank will make their Special Attacks deal significantly more damage to installation enemies. Keeping the seaplane allows to still perform artillery spotting to maintain enough effectiveness against other targets.
     +  " Nuke setups", Yamato Kai Ni Juu only.
  • A proper nuke setup keeping the Double Attack and artillery spotting, that uses Yamato's ability to carry Secondary Guns in her RE, also taking advantage of her Special Attack.
CA/CAV
     The standard anti-installation setup for heavy cruisers. It allows artillery spotting and deals decent damage against installations.
     This is an alternative setup only for aviation cruisers. It removes the ability to artillery spot for much more powerful anti-installation damage at night.
    
    
    +  		" Nuke setups", Mogami Kai Ni Toku only.
  • The last setup uses Mogami's ability to carry 8cm High-angle Guns 
          in her RE, making this a true nuke setup while keeping the Double Attack.
CL
    " Nuke setup".
     A setup for 4-slot light cruisers. This preserves their ability to double attack at night while giving them significant anti-installation power.
DD
    " Nuke setup".
   
   
    		" Mini-Nuke setup"
  • Substitute nukes to use ONLY when lacking Landing Craft or Amphibious Tanks.
   
    		Setups that keep the Double Attack while maintaining decent anti-installation power, allowing reasonable effectiveness against installation and other targets at night.
     Tashkent only.
  • Functions much like the light cruiser setup with a powerful night battle double attack.
CV/CVB/CVL
    This is only to be used when having anti-installation dive bombers. It will allow the carrier to still perform CVCI against other targets.
    The numbers of torpedo bombers and fighters in this setup can be varied depending on the amount of fighter power required. This is the standard carrier anti-installation setup. While it does sacrifice CVCI, the carrier shelling formula, and proficiency bonuses, it still ensures that carriers will do significant damage to installations and other targets.
     Gambier Bay Mk.II & Unyou Kai/Ni only.
  • The closest setup to a proper "CV nuke".
AV
    " Nuke setup".
  • 4-slot AVs can also either take a 2nd anti-ground rocket, a midget sub, or a seaplane fighter in their last slot.
LHA
     " Nuke setup".
  • LHA can carry the strongest 4 slots nukes.
    +  " Mega-Nuke setup", Shinshuu Maru Kai only.

Additional Information

Landing Craft/Amphibious Tank Capable Ships

Ships that can equip Landing Craft / Amphibious Vehicles
Type Landing Craft   Both   &   Amphibious Vehicle  
DD                                          Kai Ni D      Kai Ni D      Kai Ni D          Kai Ni D      Kai Ni              
CL      Kai Ni D          Kai Ni Toku    
CAV  Kai Ni Toku
(F)BB(V)    Kai Ni Juu    Kai Ni C
CVL      Kai Ni Sen
AV                  Kai Ni Toku
AO      
LHA          
SS(V) All
RE

  Soukoutei (Armored Boat Class) : Shinshuu Maru 
 

   Ka-Tsu tanks 
 : I-36 
  · I-41 
  · I-47 Kai  · I-58 Kai 

[edit]

See Also

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