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Template:Under ConstructionSee 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.

Ship Class 35.6cm35.6cm Twin Gun Mount 007 Card.png
P35.6cmPrototype 35.6cm Triple Gun Mount 103 Card.png
Dazzle35.6cm Twin Gun Mount (Dazzle Camouflage) 104 Card.png
38cmK38cm Twin Gun Mount Kai 114 Card.png
30.5cm30.5cm Triple Gun Mount 231 Card.png
30.5cmK30.5cm Triple Gun Mount Kai 232 Card.png
38.1cm38.1cm Mk.I Twin Gun Mount 190 Card.png
38.1cm/N38.1cm Mk.I N Twin Gun Mount Kai 192 Card.png
38cm四38cm Quadruple Gun Mount 245 Card.png
38cmK四38cm Quadruple Gun Mount Kai 246 Card.png
381mm381mm 50 Triple Gun Mount 133 Card.png
381mmK381mm 50 Triple Gun Mount Kai 137 Card.png
41cm41cm Twin Gun Mount 008 Card.png
P41cmPrototype 41cm Triple Gun Mount 105 Card.png
41cmK41cm Triple Gun Mount Kai 236 Card.png
41cmK241cm Triple Gun Mount Kai Ni 290 Card.png
16inch16inch Triple Gun Mount Mk.7 161 Card.png
16inch + GFCS16inch Triple Gun Mount Mk.7 + GFCS 183 Card.png
16inch Mk.I16inch Mk.I Triple Gun Mount 298 Card.png 16inch +
AFCT Kai
16inch Mk.I Triple Gun Mount + AFCT Kai 299 Card.png
16inch Kai +
FCR Type 284
16inch Mk.I Triple Gun Mount Kai + FCR Type 284 300 Card.png
P46cmPrototype 46cm Twin Gun Mount 117 Card.png 46cm46cm Triple Gun Mount 009 Card.png 46cmK46cm Triple Gun Mount Kai 276 Card.png P51cmPrototype 51cm Twin Gun Mount 128 Card.png
51cm51cm Twin Gun Mount 281 Card.png
Гангут ClassГангут +7
30.5cm: +10
0 0 -7 -3 -10? ?? ?? -10 -18 ?? N/A
Kongou ClassKongou
Hiei
Kirishima
Haruna
+7 0 -2 -5 -5 -5 -6 -3 -7 -10 -10? N/A
Bismarck ClassBismarck +4 0 +1 -5 -5 -5 ?? ?? -7 -10 ?? N/A
Vittorio Veneto ClassLittorio
Roma
+4 0 +1 -5 -5 -5 ?? ?? -7 -10 ?? N/A
Richelieu ClassRichelieu +4 +5 -2 -5 -5 -7 -14? -8 -7 -10 ?? N/A
Iowa ClassIowa +4 0 -2 -5 0
Married: +5
?? ?? ?? -7 -10 ?? N/A
Queen Elizabeth ClassWarspite +6
38.1 cm: +8
?? +2 +2 -2? +5 ?? +4 -3 -10 ?? N/A
Nelson ClassNelson ?? ?? 0 +3 ?? 0 ?? ?? ?? ?? ?? N/A
Ise/Fusou Class (Base)Ise
Hyuuga
Fusou
Yamashiro
+2 0 +2 +2 +2 +3 ?? ?? -3 -7 ?? N/A
BBV-classIse Kai
Hyuuga Kai
Fusou Kai
Fusou Kai Ni
Yamashiro Kai
Yamashiro Kai Ni
+4 0 +2 +2 0 0 ?? ?? -3 -7 -4 N/A
Ise-class (Kai Ni)Ise Kai Ni +4 0 ?? +4? ?? ?? ?? +2 -3? -7
Fast +: -11?
?? N/A
Nagato ClassNagato
Mutsu
+2 0 +2 +2 +2 +3 ?? ?? -3 -7 ?? 0
Nagato Class (Kai Ni)Nagato Kai Ni +2 0 +2 +5 0 ?? +4 ?? -2 -4 -6 Nagato: -5
Mutsu: -8
Yamato ClassYamato
Musashi
0 +3 +3 +7 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.
  • The information in this table is sourced from this spreadsheet maintained by Dewy with the relevant sources linked in the spreadsheet.
Last Updated: July 15th 2019 Made by: Tsubakura

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

Where:

  • is the resulting fit bonus or overweight penalty
  • 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.
  • 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.
  • 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.

Ship Class GreenGunDP.png12.7cm Twin (LM)12.7cm Twin High-angle Gun Mount (Late Model) 091 Card.png RedGunMedium.png14cm Single14cm Single Gun Mount 004 Card.png
 

YellowGun.png15.2cm15.2cm Single Gun Mount 011 Card.png

RedGunMedium.png14cm Twin14cm Twin Gun Mount 119 Card.png
 

RedGunMedium.png14cm Twin Kai14cm Twin Gun Mount Kai 310 Card.png

RedGunMedium.png15.2cm15.2cm Twin Gun Mount 065 Card.png

RedGunMedium.png15.2cmK15.2cm Twin Gun Mount Kai 139 Card.png

RedGunMedium.pngBofors 15.2cmBofors 15.2cm Twin Gun Mount Model 1930 303 Card.png RedGunMedium.png15.5cm15.5cm Triple Gun Mount 005 Card.png
 

RedGunMedium.png15.5cmK15.5cm Triple Gun Mount Kai 235 Card.png

RedGunMedium.png20.3cm20.3cm Twin Gun Mount 006 Card.png
 

RedGunMedium.png20.3cm(2)20.3cm (No.2) Twin Gun Mount 090 Card.png
RedGunMedium.png20.3cm(3)20.3cm (No.3) Twin Gun Mount 050 Card.png

RedGunMedium.png203mm/53203mm 53 Twin Gun Mount 162 Card.png
Day Night Day Night Day Night Day Night Day Night Day Night Day Night Day Night
Ooyodo ClassOoyodo +2 +2NAccuracy +4NAccuracy +1Firepower +2Accuracy +2Firepower +2Accuracy +2Firepower ?? +2Accuracy 0 -2 -2.5N??Accuracy
Agano ClassAgano
Noshiro
Yahagi
Sakawa
+2 +2NAccuracy +4NAccuracy +1Firepower +5 +2NAccuracy +2Firepower +5 +2NAccuracy +2Firepower ?? -2 -2NAccuracy 0 -2 -2.5N??Accuracy
All other CL(T) +2 +2NAccuracy +4NAccuracy +1Firepower +2Accuracy +2Firepower +2Accuracy +2Firepower +3Accuracy ??Firepower -2 -2NAccuracy 0 -2 -2.5N??Accuracy
Mogami ClassMogami
Mikuma
Suzuya
Kumano
0 0 0 0 0 +2Accuracy 0 Template:NowrapAccuracy 0
Mogami Class (K2)Suzuya Kai Ni
Kumano Kai Ni
0 0 0 0 0 +5Accuracy 0
Zara ClassZara
Pola
0 0 0 0 0 ?? +1Accuracy +1Firepower
All other CA(V) 0 0 0 0 0 ?? 0
Seaplane Tenders (AV) ?? ?? -5NAccuracy
Kai:-7NAccuracy
-6NAccuracy 0 ?? -8 -10NAccuracy ??

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 shows an estimated accuracy and/or firepower fit bonus based on having one fit gun equipped.
    • The variable N refers to the number of guns of that category equipped. (Ex: 2 guns of 2N = 4 ACC)
  • Bonuses from guns of different classes are simply added together.
  • The night fit bonus from the 20.3cm series used to be capped at +15%. However, it is unknown whether this cap has been removed or not from the recent updates.
  • There is a possibility that certain fit categories only work during the day. The possibility is plausible, but there's no concrete data proving. The alternative theory is that the night bonus from the 20.3cm series overrides any other categories.
  • The information in this table is sourced from this spreadsheet maintained by Dewy with the relevant sources linked in the spreadsheet.
  • As of 13th December the hidden firepower bonus of 14cm Twin Gun Mount Kai14cm Twin Gun Mount Kai 310 Card.png does not work/does not exist.
Last Updated: June 23rd 2019 Made by: Tsubakura

Single Mount High-Angle Bonus[]

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

Ship GreenGunDP.png12.7cm Single HA Mount (Late Model)12.7cm Single High-angle Gun Mount (Late Model) 229 Card.png
Satsuki K2Satsuki Kai Ni +5Accuracy
Other Mutsuki-classMutsukiKisaragi
YayoiUzuki
MinazukiFumizuki
NagatsukiKikuzuki
MikazukiMochizuki
??
Kamikaze-classKamikaze
Asakaze
Harukaze
Matsukaze
Hatakaze
??
Yura K2Yura Kai Ni +4 +10NAccuracy
Light Cruisers (CL) +4NAccuracy

Unknown factors:

  • Only Yura K2Yura Kai Ni and Satsuki K2Satsuki Kai Ni were tested. It's unknown whether the other ships in the same class would receive the same bonus or whether it only works for specific remodels.
  • The variable N refers to the number of guns of that category equipped. (Ex: 2 guns of 2N = 4 ACC)
  • It is unknown whether the 12.7cm Single Gun Mount gives a fit bonus or not.
Last Updated: December 5th 2018 Made by: Tsubakura

References[]


[Edit]List · Gallery · By Stats · Development · Improvement · Overweight / Fit Gun · Visible Bonuses
Main Gun Small QF 4.7inch Mk.XII Kai · 12cm Single (Kai 2· 120mm/50 Twin · 12.7cm Single · 12.7cm Twin (Model A (Kai 2· Model B · Model C · Model D (Kai 3)) · 130mm B-13 Twin
AA 10cm Twin HA · 12cm Single HA · 12.7cm HA LM (Single · Twin· 12.7cm HA K2 (Single · Twin· 5inch Single Mk.30 (Kai)
AAFD 10cm Twin HA + AAFD · 12.7cm Twin Model A Kai 3 + AAFD · 12.7cm Twin Model B Kai 4 + AAFD · 5inch Single Mk.30 Kai + GFCS Mk.37
Medium 14cm Single · 14cm Twin (Kai· Bofors (15cm Twin 1938 (Kai· 15.2cm Twin 1930· 15.2cm Twin (Kai· 152mm/55 Triple (Kai· 6inch Twin Mk.16 (mod.2· 6inch Twin Mk.XXI · 15.5cm Triple (Kai· 20.3cm Twin ((No.2) · (No.3)· SKC34 20.3cm Twin · 203mm/53 Twin · 8inch Triple Mk.9 (mod.2)
AAFD 5inch Twin DP (+ GFCS Mk.37)
Large 30.5cm Triple (Kai· 35.6cm Twin (Dazzle Camo · Kai · Kai 2· Proto 35.6cm Triple (Kai Dazzle Camo) · 38cm Twin (Kai· 38cm Quad (Kai· 381mm/50 Triple (Kai· 38.1cm Twin (/N Kai· 41cm Twin (Kai 2· 41cm Triple Kai (Proto 41cm · Kai 2· 46cm Triple (Proto 46cm · Kai)
16inch

16inch Twin (Mk.I · Mk.V · Mk.VIII Kai· 16inch Triple Mk.6 (mod.2 · + GFCS· 16inch Triple Mk.7 (+ GFCS)
16inch Mk.I Triple (+ AFCT Kai · + FCR Type 284)

Large (II) 51cm Twin (Prototype)
Secondary Gun 15cm Twin · 15.2cm Single · OTO 152mm Triple · 15.2cm Triple · 15.5cm Triple (Kai)
AA 8cm Twin HA (Kai + Add. Machine Guns· 10cm Twin HA (Carriage) · 10.5cm Twin · 12.7cm Twin HA · 5inch Single HA
AAFD 90mm Single HA · 10cm Twin HA Kai + Add. Machine Guns · 12.7cm HA + AAFD · 5inch Twin Mk.28 mod.2
Anti-Air Machine Gun 7.7mm · 12.7mm Single · 2cm Flakvierling 38 · 25mm Single (Twin · Triple· 3.7cm FlaK M42 · Bi Type 40mm Twin · 12cm 30-tube Rocket Launcher (Kai 2· 20-tube 7inch UP Rocket Launchers
C.D. 25mm Triple (Concentrated Deployment) · Bofors 40mm Quad · QF 2-pounder Octo
Fire Director Type 91 Anti-Aircraft Fire Director · Type 94 Anti-Aircraft Fire Director
Torpedo Weapon Torpedo 53cm Twin · 53cm Oxygen Bow · 533mm Triple · 533mm Quint (Initial Model · Late Model· 61cm (Triple · Quad· 61cm Oxygen (Triple (Late Model· Quad (Late Model· Quint · Proto Sext)
Sub Submarine 53cm Bow (8 tubes) · Prototype FaT Type 95 Oxygen Torpedo Kai · Late Model Bow Torpedo Mount (6 tubes) (+ Skilled Sonar Personnel· Late Model 53cm Bow Torpedo Mount (8 tubes)
Midget Sub Kouhyouteki (Type A · Type C · Type D)
Carrier-based Aircraft Fighter Type 96 Fighter (Kai· Zero (Model 21 (Skilled · Iwamoto· Model 32 (Skilled· Model 52 (Skilled · 52A Iwamoto · 52C 601 · 52C Iwai· Model 53 (Iwamoto)) · Shiden (Kai 2 · Kai 4· Reppuu (Proto Late Model · Model 11 · 601 · Kai (Prototype) · Kai 2 (CarDiv 1/Skilled)) · Shinden Kai
Foreign

German: Bf 109T Kai · Focke-Wulf (Fw 190T Kai · Fw 190 A-5 Kai)
Italian: Reggiane (Re.2001 OR Kai · Re.2005 Kai)
American: Wildcat (F4F-3 · F4F-4· Hellcat (F6F-3  · F6F-5)  · XF5U
British: Fulmar · Seafire Mk.III Kai

Night Reppuu Kai 2 Model E (CarDiv 1/Skilled· Hellcat (F6F-3N · F6F-5N)
Torpedo Bomber Type 97 (Skilled · 931 (931/Skilled· Tomonaga · Murata· Tenzan (931 · 601 · Model 12A · Model 12 Tomonaga · Model 12 Murata· Ryuusei (601 · Kai (CarDiv 1 · CarDiv 1/Skilled)) · Re.2001 G Kai · Swordfish (Mk.II · Mk.III· TBD · TBF
Night TBM-3D · Type 97 Kai Model E (Skilled· Tenzan Model 12A Kai (Skilled)
Dive Bomber Type 99 (Skilled · Egusa· Suisei (Model 12A (634 w/Cluster Bombs · w/ Photo Fuze Bombs· Model 22 (634 (634/Skilled)) · Egusa · 601· Type 0 Fighter-bomber (Model 62 (Iwai· Model 63· Prototype Nanzan · Ju 87C Kai (Kai 2 (Skilled)) · SBD · F4U-1D · FM-2 · Skua · Re.2001 CB Kai · SB2U
Recon Saiun (Eastern Caroline · 4th Recon Squad· Type 2 Recon · Prototype Keiun
Seaplane Flying Boat Type 2 Large Flying Boat · PBY-5A Catalina
Recon Type 0 Recon (Model 11B · (Skilled)) · Type 0 Observation · Shiun · Type 98 Night Recon · Ar196 Kai · Ro.43 Recon · OS2U · S9 Osprey · Swordfish Mk.II Kai (Recon) · Fairey Seafox
Bomber Zuiun (Model 12 (634)) · Kai 2 (634 (634/Skilled)) · 631 · 634 (634/Skilled)) · Seiran (Prototype Seiran · 631· Laté 298B · Swordfish (Seaplane) (Mk.III Kai (Skilled))
Fighter Ro.44 Seaplane Fighter (bis· Type 2 Seaplane Fighter Kai (Skilled· Kyoufuu Kai
Land-based Aircraft Attack Type 96 · Type 1 (Nonaka · Model 22A · Model 34· Ginga (Egusa)
Patrol Toukai (Prototype · 901)
Fighter Interceptor Raiden · Shiden (Model 11 · Model 21 (Kai (343) 301st Sq.)) · Reppuu Kai (352 Air Group/Skilled· Shuusui (Prototype)
IJA/Foreign Type 1 Fighter Hayabusa (Model II (64th Sq.· Model III A (54th Sq.)) · Type 3 Fighter Hien (244 · Model 1D· Type 4 Fighter Hayate · Spitfire (Mk.I · Mk.V · Mk.IX· Fw 190 D-9 · Me 163B
LBAA-IJA Bomb-carrying Type 1 Fighter Hayabusa Model III Kai (65th Squadron)
Recon Type 2 LB Recon (Skilled)
Jets Fighter-Bomber Jet Keiun Kai · Kikka Kai
Anti-submarine Warfare Patroller Ka Type Observation Autogyro · O Type Observation Autogyro Kai (Kai 2· S-51J (Kai· Type 3 Command Liaison Aircraft (ASW)
Depth Charge Projector Type 94 Depth Charge Projector · Type 3 Depth Charge Projector
Racks Type 95 Depth Charge · Type 2 Depth Charge
Other Type 3 Depth Charge Projector (Concentrated Deployment) · Type 2 12cm Mortar Kai (Concentrated Deployment· 15cm 9-tube ASW Rocket Launcher · RUR-4A Weapon Alpha Kai · Lightweight ASW Torpedo (Initial Test Model)
Sonar Type 93 Passive Sonar · Type 3 Active Sonar · Type 0 Passive Sonar · Type 4 Passive Sonar · ASDIC (Type124 ASDIC · Type144/147 ASDIC · HF/DF + Type144/147 ASDIC)
Shell Type 3 Shell (Kai· Type 91 Armor Piercing Shell · Type 1 Armor Piercing Shell (Kai)
Anti-Ground WG42 (Wurfgerät 42) · Type 4 20cm Anti-ground Rocket Launcher (Concentrated Deployment)
Amphibious and Transport Landing Craft Daihatsu Landing Craft ((Type 89 Medium Tank & Landing Force)· Toku Daihatsu Landing Craft (+ 11th Tank Regiment· M4A1 DD
Tank Special Type 2 Amphibious Tank
Drum Drum Canister (Transport Use)
Material Saiun (Disassembled for Transport)
Radar Small Air Type 13 Air Radar (Kai· SG Radar (Initial Model) · GFCS Mk.37
Large Air Type 21 Air Radar (Kai· Type 42 Air Radar · 15m Duplex Rangefinder + Type 21 Radar Kai 2 · FuMO25 Radar · SK Radar (+ SG)
Small Surface Type 22 Surface Radar (Kai 4 (Calibrated Late Model)) · Type 33 Surface Radar
Large Surface Type 32 Surface Radar (Kai)
Submarine Submarine Radar (& Waterproof Telescope · & Passive Radiolocator ((E27) · Late Model))
Engine Turbine Improved Kanhon Type Turbine
Boiler Enhanced Kanhon Type Boiler · New Model High Temperature High Pressure Boiler
Bulge Anti-torpedo Bulge (Medium · Large· New Kanhon Design (Medium · Large· Pugliese Underwater Protection Bulkhead · Arctic Camouflage (+ Arctic Equipment)
Night Battle Aid Searchlight · Type 96 150cm Searchlight · Star Shell
Support Item Emergency Repair Personnel (Repair Goddess· Combat Ration ((Special Onigiri) · Canned Saury· Underway Replenishment
Personnel and Facility Fleet Command Facility (Striking Force· Ship Repair Facility · Skilled Carrier-based Aircraft Maintenance Personnel · Night Operation Aviation Personnel (+ Skilled Deckhands· Skilled Lookouts
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