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Combat/Anti-Installation
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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.
- These statuses are merely cosmetic in nature and have no gameplay difference.
| 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 .
|
| Aviation Battleship (BBV) | Most installations fall under this category.
|
| Carrier (CV) | Example is Lycoris Princess .
|
Skin Toughness
| Type | Characteristics |
|---|---|
| Soft Skin | Examples are Supply Depot Princess , Harbour Princess and Northern Princess .
|
| 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.
| |||
 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)  Suisei Model 12 (w/ Type 31 Photoelectric Fuze Bombs)  Type 99 Dive Bomber Model 22  Type 99 Dive Bomber Model 22 (Skilled)  SB2C-3  SB2C-5  F4U-4 | |||
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]:
- Ship type bonuses
- General multiplicative bonuses
- Specific equipment bonuses:
- 11th regiment bonuses
- M4A1 bonuses
- Ho-Ni bonuses
- Landing craft synergy bonuses
- General Flat bonuses
- 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.
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].
Specific equipment bonuses
The following multipliers are pre-cap.
| Equipment | Multiplicative bonus | Flat Bonus | ||
|---|---|---|---|---|
| Toku DLC Tank Bonus | A21 | B21 | ||
| Toku DLC + 11th Reg
|
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 | ||
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 : 2DLC (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.
|
|
|
Nagato-class Kai Ni & Yamato Kai Ni Juu only.
|
+
|
" Nuke setups", Yamato Kai Ni Juu only.
|
| 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.
|
| 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"
|
|
Setups that keep the Double Attack while maintaining decent anti-installation power, allowing reasonable effectiveness against installation and other targets at night. |
|
|
Tashkent only.
|
| 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.
|
| AV | |
|
|
" Nuke setup".
|
| LHA | |
|
|
" Nuke setup".
|
| +
|
" 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 |
| ||||
| [edit] | |||||
See Also
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