View source for Combat/Overweight Penalty and Fit Gun Bonus

{{Under Construction
|Scope  = article
|Desc   = Overweight Penalty/Fit Gun Bonus
|Help   = adding missing information to the page.
|Missing Information = Fit Gun table for BB, updated information and sources, quantified effects
|Page Adopted   =  Tsubakura
}}

''See also: [https://www.reddit.com/r/kancolle/wiki/intermediate#wiki_fit-gun_bonus Fit gun bonus - Reddit intermediate players' guide]''

==Fit Bonus and Overweight Penalty==
With the introduction of fit gun mechanics on July 28th 2014, ships now will receive fit bonus/penalties depending if the equipped gun fits for the class or if the gun is too heavy for the ship to use.

As fit bonuses are unaffected by morale or combined fleets, it becomes important that you utilize the fit bonuses as much as possible.

Fit mechanics does not apply to the abyssal fleet.<ref>https://twitter.com/KanColle_STAFF/status/380246238991364096</ref>

==Battleships==
<!--
Maintained by Tsubakura.


The hex color codes for each category is:
|style="background-color:#81C784"|+7 and higher
|style="background-color:#A5D6A7"|+4 to +6
|style="background-color:#C8E6C9"|+1 to +3
|0 or ? uses no color
|style="background-color:#FFCDD2"|-1 to -3
|style="background-color:#EF9A9A"|-4 to -6
|style="background-color:#E57373"|-7 and lower
|style="background-color:#888888"|If N/A


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Battleships receives accuracy bonuses if the guns are fit and accuracy penalties if its overweight.<ref>https://twitter.com/KanColle_STAFF/status/493648336142876674</ref>
How much bonus/penalty a ship receives, depends on the battleship class, the caliber and type of the gun and whether the battle takes place during day or night.

'''Note:''' The gun classification is only there as a reference for editors and does not reflect the terminologies used in-game.

{| class="wikitable typography-xl-optout" style="text-align:center;"
!'''Gun Class'''
!colspan="2"|Class A
!colspan="2"|Class B
!colspan="2"|Class C
!colspan="2"|Class Y
!colspan="2"|Class X
!colspan="2"|Class D
!colspan="2"|Class E
!colspan="2"|Class Z
|-
!colspan="1"|'''Ship Class'''
!colspan="2"|{{EquipmentLink|35.6cm Twin Gun Mount|35.6cm}}<br />
{{EquipmentLink|Prototype 35.6cm Triple Gun Mount|P35.6cm}}<br />
{{EquipmentLink|35.6cm Twin Gun Mount (Dazzle Camouflage)|Dazzle}}<br />
{{EquipmentLink|38cm Twin Gun Mount Kai|38cmK}}<br />
{{EquipmentLink|38.1cm Mk.I Twin Gun Mount|38.1cm}}<br />
{{EquipmentLink|38.1cm Mk.I/N Twin Gun Mount Kai|38.1cm/N}}
!colspan="2"|{{EquipmentLink|381mm/50 Triple Gun Mount|381mm}}<br />
{{EquipmentLink|381mm/50 Triple Gun Mount Kai|381mmK}}
!colspan="2"|{{EquipmentLink|41cm Twin Gun Mount|41cm}}<br />
{{EquipmentLink|Prototype 41cm Triple Gun Mount|P41cm}}
!colspan="2"|{{EquipmentLink|16inch Triple Gun Mount Mk.7|16inch}}
!colspan="2"|{{EquipmentLink|16inch Triple Gun Mount Mk.7 + GFCS|GFCS}}
!colspan="2"|{{EquipmentLink|Prototype 46cm Twin Gun Mount|P46cm}}
!colspan="2"|{{EquipmentLink|46cm Triple Gun Mount|46cm}}
!colspan="2"|{{EquipmentLink|Prototype 51cm Twin Gun Mount|P51cm}}
|-
!colspan="1"|Phase
!colspan="1"|Day
!colspan="1"|Night
!colspan="1"|Day
!colspan="1"|Night
!colspan="1"|Day
!colspan="1"|Night
!colspan="1"|Day
!colspan="1"|Night
!colspan="1"|Day
!colspan="1"|Night
!colspan="1"|Day
!colspan="1"|Night
!colspan="1"|Day
!colspan="1"|Night
!colspan="1"|Day
!colspan="1"|Night
|-
|{{ShipLink|Kongou|Hiei|Kirishima|Haruna|text=Kongou Class|link_class=Kongou}}
|style="background-color:#81C784" colspan=2;| +7

|style="background-color:#FFCDD2"| -2
|0

|style="background-color:#EF9A9A" colspan="2"| -5

|style="background-color:#EF9A9A" colspan="2"| -5

|style="background-color:#E57373" colspan="2"| -7

|style="background-color:#E57373" colspan="2"| -7

|style="background-color:#E57373" colspan="2"| -10

|style="background-color:#888888" colspan="2"|N/A
|-
|{{ShipLink|Bismarck|text=Bismarck Class|link_class=Bismarck}}
|style="background-color:#A5D6A7" colspan="2"| +4

|style="background-color:#afffb4"| +1
|0

|style="background-color:#EF9A9A" colspan="2"| -5

|style="background-color:#EF9A9A" colspan="2"| -5

|style="background-color:#FFCDD2" colspan="2"| -2

|style="background-color:#E57373" colspan="2"| -7

|style="background-color:#E57373" colspan="2"| -10

|style="background-color:#888888" colspan="2"|N/A
|-
|{{ShipLink|Littorio|Roma|text=Vittorio Veneto Class|link_class=Vittorio Veneto}}
|style="background-color:#A5D6A7" colspan="2"| +4

|style="background-color:#afffb4"| +1
|0

|style="background-color:#EF9A9A" colspan="2"| -5

|style="background-color:#EF9A9A" colspan="2"| -5

|style="background-color:#EF9A9A" colspan="2"| -5

|style="background-color:#E57373" colspan="2"| -7

|style="background-color:#E57373" colspan="2"| -10

|style="background-color:#888888" colspan="2"|N/A
|-
|{{ShipLink|Iowa|text=Iowa Class|link_class=Iowa}}
|style="background-color:#A5D6A7" colspan="2"| +4

|style="background-color:#FFCDD2"| -2
|0

|style="background-color:#EF9A9A" colspan="2"| -5

|colspan="2"|0

|style="background-color:#A5D6A7" colspan="2"| +4

|style="background-color:#E57373" colspan="2"| -7

|style="background-color:#E57373" colspan="2"| -10

|style="background-color:#888888" colspan="2"|N/A
|-
|{{ShipLink|Warspite|text=Queen Elizabeth Class|link=Warspite}}
|style="background-color:#A5D6A7" colspan="2"| +4

|style="background-color:#C8E6C9"| +2
|0

|style="background-color:#C8E6C9" colspan="2"| +2

|style="background-color:#C8E6C9" colspan="2"| +2

|colspan="2"|0

|style="background-color:#FFCDD2" colspan="2"| -3

|style="background-color:#E57373" colspan="2"| -7

|style="background-color:#888888" colspan="2"|N/A
|-
|{{ShipLink|Ise|Hyuuga|text=Ise Class (Base)|link_class=Ise}}
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|style="background-color:#888888" colspan="2"|N/A
|-
|{{ShipLink|Ise|Hyuuga|text=Ise Class (Kai)|link_class=Ise}}
|style="background-color:#A5D6A7" colspan="2"| +4

|style="background-color:#C8E6C9"| +2
|0

|style="background-color:#C8E6C9" colspan="2"| +2

|style="background-color:#C8E6C9" colspan="2"| +2

|colspan="2"|??

|style="background-color:#FFCDD2" | -3
|style="background-color:#EF9A9A" | -5

|style="background-color:#E57373" | -7
|style="background-color:#E57373" | -8

|style="background-color:#888888" colspan="2"|N/A
|-
|{{ShipLink|Fusou|Yamashiro|text=Fusou Class (Base)|link_class=Fusou}}
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|colspan="2"|??
|style="background-color:#888888" colspan="2"|N/A
|-
|{{ShipLink|Fusou/Kai|Fusou/Kai Ni|Yamashiro/Kai|Yamashiro/Kai Ni|text=Fusou Class (Kai/Kai Ni)|link_class=Fusou}}
|style="background-color:#A5D6A7" colspan="2"| +4

|style="background-color:#C8E6C9"| +2
|0

|style="background-color:#C8E6C9" colspan="2"| +2

|style="background-color:#C8E6C9" colspan="2"| +2

|colspan="2"|??

|style="background-color:#FFCDD2" | -3
|style="background-color:#EF9A9A" | -5

|style="background-color:#E57373" | -7
|style="background-color:#E57373" | -8

|style="background-color:#888888" colspan="2"|N/A
|-
|{{ShipLink|Nagato|Mutsu|text=Nagato Class|link_class=Nagato}}
|style="background-color:#C8E6C9" colspan="2"| +2

|style="background-color:#C8E6C9"| +2
|0

|style="background-color:#C8E6C9" colspan="2"| +2

|style="background-color:#C8E6C9" colspan="2"| +2

|style="background-color:#C8E6C9" colspan="2"| +2

|style="background-color:#FFCDD2" colspan="2"| -3

|style="background-color:#E57373" colspan="2"| -7

|colspan="2"|0
|-
|{{ShipLink|Yamato|Musashi|text=Yamato Class|link_class=Yamato}}
|colspan="2"|0
|colspan="2"|0
|colspan="2"|0
|colspan="2"|0
|colspan="2"|0
|colspan="2"|0
|colspan="2"|0
|colspan="2"|0
|-
|style="text-align:left" colspan='20'|
'''Note: Fit gun mechanics are still being investigated to this day, hence the values are not final and may be subject to changes.'''<br />
The table shows an estimated accuracy fit bonus based on having '''one fit gun''' equipped.<br />
For married ships, the overweight penalty is reduced by 40% (A married Kongou with a 46cm receives a penalty of -6 instead of -10, for example).
<br />
If more than one gun of the same class is used, multiply the modifier by the square root of number of guns. (A Kongou-class with two A class guns equipped for example, that's √2 x 7 = 9.89949493659)
<br />
If guns from different classes are used together, add the modifiers together. (A Kongou with a 35.6cm and 41cm mixed for example, that's 7 - 5 = 2.
|-
|style = colspan='20'|<div style="text-align: left;">Last Updated: March 26th 2017</div>
|}

==Heavy Cruisers==
Heavy/Aviation cruisers only require one fit gun to get their fit bonus, there are no overweight mechanics regarding cruisers. Keep in mind that equipping more than one of the same fit gun will not give you any duplicate bonuses and the bonuses also apply to torpedo attacks.<br />
The following guns will give you a fit bonus:
* {{EquipmentLink|20.3cm Twin Gun Mount}} +10%
* {{EquipmentLink|20.3cm (No.3) Twin Gun Mount}} +15%

'''Note:''' It is currently unknown what would happen if you combine different fit guns.

The following guns are confirmed not to give any fit bonuses:
* {{EquipmentLink|20.3cm (No.2) Twin Gun Mount}}
* {{EquipmentLink|SKC34 20.3cm Twin Gun Mount}}

==Light Cruisers==
Light Cruisers, Torpedo Cruisers and Training Cruisers all enjoy an accuracy and firepower bonus when equipped with fit guns. Like Heavy Cruisers, Light Cruisers does not have overweight mechanics.<ref>https://twitter.com/KanColle_STAFF/status/600208207454146561</ref>
===Firepower===
Light Cruisers, Training Cruisers, and Torpedo Cruisers enjoy firepower increase when using any of the following gun:<ref name=CLFG>[http://ja.kancolle.wikia.com/wiki/%E5%B7%A1%E6%B4%8B%E8%89%A6%E4%B8%BB%E7%A0%B2%E3%80%90%E3%83%95%E3%82%A3%E3%83%83%E3%83%88%E8%A3%9C%E6%AD%A3%E3%80%91 巡洋艦主砲【フィット補正】]</ref>
*[[14cm Single Gun Mount]]
*[[14cm Twin Gun Mount]]
*[[15.2cm Single Gun Mount]]
*[[15.2cm Twin Gun Mount]]
*[[15.2cm Twin Gun Mount Kai]]

It have been suggested that the increase in firepower might follow this relationship:<ref name=CLFG />
* Increase in Firepower = √(No. of Fit Single Gun Mount) + 2 × √(No. of Fit Twin Gun Mount)

===Accuracy===
So far, only limited amount of tests have been conducted to study light cruiser fit gun's effect on accuracy so all information in this section are in-comprehensive and they might be superseded by other, more up-to-date investigations when those information are available.

The accuracy fit bonus only applies if 2 or more fit guns are equipped at the same time. Equipping more than 2 fit guns does not increase the fit bonus.<ref>https://twitter.com/buntan_oic/status/759254902287851524</ref>
Accuracy increase have been observed for the following guns when they are being equipped on CL<ref name=CLFG />
*[[14cm Single Gun Mount]]
*[[14cm Twin Gun Mount]]
*[[15.2cm Single Gun Mount]]
*[[15.2cm Twin Gun Mount]]
*[[15.2cm Twin Gun Mount Kai]]

Accuracy increase have been observed for the following guns when they are being equipped on CLT<ref name=CLFGA>[http://ja.kancolle.wikia.com/wiki/%E3%82%B9%E3%83%AC%E3%83%83%E3%83%89:939#2 軽巡フィット命中検証]</ref>
*[[14cm Twin Gun Mount]]
Accuracy increase have been observed for the following guns when they are being equipped on CT<ref>http://ja.kancolle.wikia.com/wiki/%E3%82%B9%E3%83%AC%E3%83%83%E3%83%89:939#6</ref>
*[[14cm Twin Gun Mount]]
Other combinations have not been fully tested yet.

The possibility of accuracy bonus vary across different ship classes have not been ruled out yet.<ref name=CLFGA />

==Third party Inspection on BB Fit Gun==
* [http://ch.nicovideo.jp/pixy_for_ever/blomaga/ar994724 【艦これ】戦艦主砲の装備補正検証　その4　-フィット・過重量砲の概念は扇?　16inchMk.7など同種主砲2本積み9～11種類戦艦型別命中率分析-] (Japanese)
* [http://ja.kancolle.wikia.com/wiki/スレッド:450 戦艦主砲の装備補正命中率検証] (Japanese)
* [https://docs.google.com/spreadsheets/d/1gP20QDkWaN-fyDckR--RTqJZ8wclWnBBxtcU4N4oetw/edit#gid=0 金剛型 Yumeji396 data] (Japanese)
* [https://docs.google.com/spreadsheets/d/1DxfqxeHQ_rFQnYU62oW_VOHY02jJNnsQy-3F30yvRj0/edit#gid=26267938 低速戦艦 Yumeji396 data] (Japanese)
* [https://docs.google.com/spreadsheets/d/1VXQQKTpOlz5Ca-MSo53pGI6VgdU5far3MEb7RqP2l9k/edit#gid=133400888 伊勢改LV99命中検証] (Japanese)
* [https://goo.gl/gV7ypm Iowa改フィット@2本積み] (Japanese)
* [https://docs.google.com/spreadsheets/d/1HHpzOklOtf0l4UaKRQ5_5kKXoFfTK6qGFAXBvzJmemI/edit#gid=0 Warspite改フィット] (Japanese)
* [https://docs.google.com/spreadsheets/d/1Szmwx4W-tZDQJPZMNlTidNxP1Y9mx5EI89hfSiQZnTo/edit?pref=2&pli=1#gid=1825485109 ケッコン艦のフィット補正検証まとめ] (Japanese)
* [https://docs.google.com/spreadsheets/d/1uV4MVs0uz5CicCdO6vunu5JFI8oZO7V38TCMO2BHSMY/edit#gid=532164406 命中検証 -検証共同-] (Japanese)
* [https://twitter.com/Ex_witch/status/826415071500709888 GFCSを加えてまとめグラフ] (Japanese)
* [https://docs.google.com/spreadsheets/d/1kkbraxubwI1S6y-aBcPg5RwfDJmj0APo1Jr5Yj_6cxM/edit#gid=0 16inch Mk7+GFCS Tests] (Japanese)

==Third party Inspection on CL Fit Gun==
* http://kancollexxxxx.blog.shinobi.jp/Entry/4/ (Japanese)
* https://docs.google.com/spreadsheets/d/1Vj_DAMxkZk2ZFZy8mYn6_YM_g1TDW4G7Ax4bBZa_yM8/edit#gid=0 (Japanese)
* https://docs.google.com/spreadsheets/d/17FrSqk0-yo2KnGux0YDLzeznUeYS8Wu5ojQ8bjsTbL8/edit#gid=449414457 (Japanese)

==References==
<references />
[[Category:Calculation]]
[[Category:Example]]
[[Category:Help]]
[[Category:Game System]]
[[Category:Game Mechanics]]