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Combat/Overweight Penalty and Fit Gun Bonus

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This article is Overweight Penalty/Fit Gun Bonus
The article is already being adopted and currently under renovation.
Missing Information: Fit Gun table for BB, updated information and sources, quantified effects
Page Adopted By: Tsubakura
Please contact this person before making any major (non-grammar, typo correction, redesigning etc.) edits on this article.


See also: 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 do not apply to the abyssal fleet.[1]

Battleships

Battleships receives accuracy bonuses if the guns are fit and accuracy penalties if its overweight.[2] 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.

Gun Class Class A Class F Class B Class C Class Y Class D Class E Class Z
Ship Class 30.5cm30.5cm Triple Gun Mount

30.5cmK30.5cm Triple Gun Mount Kai

35.6cm35.6cm Twin Gun Mount

P35.6cmPrototype 35.6cm Triple Gun Mount
Dazzle35.6cm Twin Gun Mount (Dazzle Camouflage)
38cmK38cm Twin Gun Mount Kai
38.1cm38.1cm Mk.I Twin Gun Mount
38.1cm/N38.1cm Mk.I/N Twin Gun Mount Kai

38cm四38cm Quadruple Gun Mount

38cmK四?38cm Quadruple Gun Mount Kai

381mm381mm/50 Triple Gun Mount

381mmK381mm/50 Triple Gun Mount Kai

41cm41cm Twin Gun Mount

P41cmPrototype 41cm Triple Gun Mount
41cmK41cm Triple Gun Mount Kai

16inch16inch Triple Gun Mount Mk.7

GFCS16inch Triple Gun Mount Mk.7 + GFCS

P46cmPrototype 46cm Twin Gun Mount 46cm46cm Triple Gun Mount P51cmPrototype 51cm Twin Gun Mount
Day Night Day Night Day Night Day Night Day Night Day Night Day Night Day Night Day Night
Kongou ClassKongou
Hiei
Kirishima
Haruna
+7 -2 -2 0 -5 -5 -7 -10 N/A
Bismarck ClassBismarck +4 ?? +3 0 -5 -2? -2? -10 N/A
Гангут ClassГангут +10 +7 ?? +1 0 -7 -7 -10 -16 N/A
Richelieu ClassRichelieu +4 +4 -2 0 -7 -7 -7 -10 N/A
Vittorio Veneto ClassLittorio
Roma
+4 ?? +1 0 -7 -5 -7 -10 N/A
Iowa ClassIowa +4 ?? -2 0 -5 +4 -7 -10 N/A
Queen Elizabeth ClassWarspite +4 ?? +2 0 +2 0 -3 -10 N/A
Ise Class (Base)Ise
Hyuuga
+2 ?? +2 0 +2 +2 -3 -7 N/A
Fusou Class (Base)Fusou
Yamashiro
+2 ?? +2 0 +2 +2 -3 -7 N/A
Ise Class (Kai)Ise
Hyuuga
+4 ?? +2 0 +2 0 -3 -5 -7 -8 N/A
Fusou Class (Kai/Kai Ni)Fusou Kai
Fusou Kai Ni
Yamashiro Kai
Yamashiro Kai Ni
+4 ?? +2 0 +2 0 -3 -5 -7 -8 N/A
Nagato Class (Base/Kai)Nagato
Mutsu
+2 ?? +2 0 +2 +2 -3 -7 0
Nagato Class (Kai Ni)Nagato Kai Ni ?? ?? ?? 0 +5 0 -3 -5 0
Yamato ClassYamato
Musashi
0 0 0 0 0 0 0 0

Note: Fit gun mechanics are still being investigated to this day, hence the values are not final and may be subject to changes. Values with a question mark either means that its not conclusive yet or the conclusion drawn here is not the same as the one drawn by yumeji.

  • The table shows an estimated accuracy fit bonus based on having one fit gun equipped.
  • 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).
  • 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 = 9.89)
  • 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.
  • Exceptions arises where different guns of the same class gives different bonuses on certain ships, notably Gangut. What would happen if you combine 30.5cm and 35.6cm is still under investigations.
Last Updated: October 13th 2017 Made by: Tsubakura

More generally, the accuracy offset can be defined with the formula:

[math]\displaystyle{ W = \sum^{\text{All Classes}} \left ( C_{k} M_{k} \sqrt{N_{k}} \right ) \% }[/math]

Where:

  • [math]\displaystyle{ W }[/math] is the resulting fit bonus or overweight penalty
  • [math]\displaystyle{ C_{k} }[/math] is the main coefficient of the equipped gun class. Refer to the above table for the coefficients applied to each Battleship for their respective guns.
  • [math]\displaystyle{ M_{k} }[/math] is the marriage coefficient for the particular gun class. Assumes a value of 0.6 if the ship is married, and if the main coefficient is negative.
  • [math]\displaystyle{ N_{k} }[/math] is the number of equipped guns for that gun class.

Cruisers

Cruisers can receive accuracy and/or firepower bonuses from using fit guns in their load-out. Unlike battleships however, cruisers do not suffer from any overweight penalty nor do overweight guns for cruisers exists.

Ship Class 14cm Single14cm Single Gun Mount

15.2cm15.2cm Single Gun Mount

14cm Twin14cm Twin Gun Mount

15.2cm15.2cm Twin Gun Mount
15.2cmK15.2cm Twin Gun Mount Kai

15.5cm15.5cm Triple Gun Mount 15.5cmK15.5cm Triple Gun Mount Kai 20.3cm20.3cm Twin Gun Mount 20.3cm(2)20.3cm (No.2) Twin Gun Mount 20.3cm(3)20.3cm (No.3) Twin Gun Mount 203mm/53203mm/53 Twin Gun Mount
Day Night Day Night Day Night Day Night Day Night Day Night Day Night Day Night
Ooyodo ClassOoyodo +4??Accuracy +1??Firepower +5Accuracy +2??Firepower +7Accuracy ?? 0 0 0 0
Agano ClassAgano
Noshiro
Yahagi
Sakawa
+8Accuracy +2??Firepower ?? ?? 0 0 0 0
All other CL(T) +3??Accuracy +2??Firepower ?? ?? 0 0 0 0
Mogami ClassMogami
Mikuma
Suzuya
Kumano
0 0 +2Accuracy +5Accuracy 0 +10*Accuracy 0 +10*Accuracy 0 +15*Accuracy 0
Zara ClassZara
Pola
0 0 ?? ?? +1Accuracy +1Firepower
All other CA(V) 0 0 ?? ?? 0

Note: Fit gun mechanics are still being investigated to this day, hence the values are not final and may be subject to changes. Values with a question mark means that it is potentially outdated and might no longer be correct.

  • The table is populated with data after the June 2017 cruiser fit gun overhaul. Values concluded from old data are marked with a question mark.
  • The table shows an estimated accuracy and/or firepower fit bonus based on having one fit gun equipped.
  • Bonuses from guns of different classes are simply added together.
  • If more than one gun of the same class is used, multiply the modifier by the square root of number of guns (Ooyodo with two 15.5cm guns equipped for example, that's √2 x 7 = 9.89). Note that this also applies to firepower bonuses!
  • Bolded out values are exceptions as they give an one-time flat bonus instead and this bonus will not increase with the amount of guns you have equipped. The 20.3cm bonus will override the 20.3cm(3) bonus if both guns are present on a ship. It is unknown if the 20.3cm(2) also overrides the 20.3cm(3) bonus.
Last Updated: November 4th 2017 Made by: Tsubakura

Single Mount High-Angle Bonus

As of June 23th, Yura and certain Mutsuki and Kamikaze class destroyers gain fit bonuses from having single mount High-Angle Gun equipped.

The exact values are unknown.

References