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Players earn access to Upgrades starting at Account Level 6, allowing them to customize and improve each ship's performance to suit their desired play style. Ships of different tiers have access to different upgrades, defined by the tables below. Certain upgrades are unique to certain ship types or nations; check the Notes column for more detail.



Contents

Purchasing Upgrades

Upgrades may be purchased and mounted for credits. Some packages for purchase, challenge rewards, and mission rewards may also grant upgrades.

Only up to one upgrade may be mounted in each slot. An upgrade may be sold for half of its purchase cost. Alternatively, an upgrade may be demounted for 25 doubloons regardless of its purchase cost. When selling a ship, all upgrades mounted on that ship must either be sold or demounted.

Tier I+ Equipment (Slot 1)

Icon Equipment Name Cost Description Notes
Wows_icon_modernization_PCM030_MainWeapon_Mod_I.png

Main Armaments Modification 1

125000Credits Increases survivability and accelerates repairs of the main battery and torpedo tubes:
  • -20% to the risk of main battery becoming incapacitated.
  • +50% to main battery survivability.
  • -20% to main battery repair time.
  • -20% to the risk of torpedo tubes becoming incapacitated.
  • +50% to torpedo tubes survivability.
  • -20% to torpedo tubes repair time.
Wows_icon_modernization_PCM003_Airplanes_Mod_I.png

Air Groups Modification 1

125000Credits Increases effectiveness of aircraft guns:
  • +10% to average damage per second of aircraft guns.
Applicable to Fighter aircraft; available only to aircraft carriers.
Wows_icon_modernization_PCM031_SecondaryWeapon_Mod_I.png

Auxiliary Armaments Modification 1

125000Credits Increases survivability of the secondary battery and AA mounts:
  • +100% to secondary battery survivability.
  • +100% to AA mounts survivability.
Wows_icon_modernization_PCM032_PowderMagazine_Mod_I.png

Magazine Modification 1

125000Credits Reduces the risk of magazine detonation:
  • -70% to the risk of your ship's magazine detonation.
Icon_modernization_PCM034_Guidance_Mod_0.png

Aiming Systems Modification 0

125000Credits Increases the firing accuracy of the main battery and secondary battery, accelerates the traverse speed of torpedo tubes and the main battery, and extends the firing range of the secondary battery:
  • +20% to main battery traverse speed.
  • -40% to maximum dispersion of main battery shells.
  • +20% to torpedo tubes traverse speed.
  • +20% to secondary battery maximum firing range.
  • -40% to maximum dispersion of secondary battery shells.
Available only to Iwaki Alpha, Yubari,
and Katori.

Tier III+ Equipment (Slot 2)

Icon Equipment Name Cost Description Notes
Wows_icon_modernization_PCM020_DamageControl_Mod_I.png

Damage Control System Modification 1

250000Credits Reduces the risk of fire and flooding:
  • -3% to the risk of flooding and damage received when torpedoes hit the torpedo protection.
  • -5% to the risk of fire.
Torpedo flooding and damage modifier only applies to ships with a torpedo protection system (viewable under the Survivability tab of the Port screen).
Wows_icon_modernization_PCM021_Engine_Mod_I.png

Propulsion Modification 1

250000Credits Increases survivability and accelerates repairs of the engine:
  • -20% to the risk of the engine becoming incapacitated.
  • -20% to engine repair time.
Wows_icon_modernization_PCM022_SteeringGear_Mod_I.png

Steering Gears Modification 1

250000Credits Increases survivability and accelerates repairs of the steering gears:
  • -20% to the steering gears repair time.
  • -20% to the risk of the steering gears becoming incapacitated.

Tier V+ Equipment (Slot 3)

Icon Equipment Name Cost Description Notes
Wows_icon_modernization_PCM006_MainGun_Mod_II.png

Main Battery Modification 2

500000Credits Increases the traverse speed of the main turrets:
  • +5% to main battery loading time.
  • +15% to main battery traverse speed.
Guns take longer to load in exchange for faster turret traverse. Stacks with Expert Marksman.
Wows_icon_modernization_PCM033_Guidance_Mod_I.png

Aiming Systems Modification 1

500000Credits Increases the firing accuracy of the main battery and secondary battery, accelerates the traverse speed of torpedo tubes, and extends the firing range of the secondary battery:
  • -7% to maximum dispersion of main battery shells.
  • +20% to torpedo tubes traverse speed.
  • +5% to secondary battery maximum firing range.
  • -5% to maximum dispersion of secondary shells.
American battleships have access to Artillery Plotting Room Modification 1 instead.
Icon_modernization_PCM028_FireControl_Mod_I_US.png

Artillery Plotting Room Modification 1

500000Credits
  • +16% to main battery maximum firing range.
  • +5% to secondary battery maximum firing range.
  • -5% to maximum dispersion of secondary battery shells.
Available only to American battleships.
Wows_icon_modernization_PCM009_FlightControl_Mod_I.png

Flight Control Modification 1

500000Credits Accelerates aircraft servicing:
  • -15% to aircraft servicing time.
Stacks with Torpedo Armament Expertise. Applicable to all aircraft; available only to aircraft carriers.
Wows_icon_modernization_PCM010_Airplanes_Mod_II.png

Air Groups Modification 2

500000Credits Increases fighters HP and ammunition:
  • +20% to fighter HP
  • +50% to fighter ammunition
Applicable to Fighter aircraft; available only to aircraft carriers.
Icon_modernization_PCM011_AirDefense_Mod_II.png

AA Guns Modification 2

500000Credits Extends firing range of AA mounts:
  • +20% to AA mounts maximum firing range.
Stacks with Advanced Firing Training.
Icon_modernization_PCM005_SecondaryGun_Mod_I.png

Secondary Battery Modification 2

500000Credits Extends firing range and increases firing accuracy of the secondary battery:
  • +20% to secondary battery maximum firing range.
  • -20% to maximum dispersion of secondary battery shells.
Stacks with Advanced Firing Training.

Tier VI+ Equipment (Slot 4)

Icon Equipment Name Cost Description Notes
Wows_icon_modernization_PCM023_DamageControl_Mod_II.png

Damage Control System Modification 2

1000000Credits Accelerates fire extinguishing and recovery from flooding:
  • -15% to flooding recovery time.
  • -15% to time of fire extinguishing.
Wows_icon_modernization_PCM024_Engine_Mod_II.png

Propulsion Modification 2

1000000Credits Reduces time to full speed:
  • -50% to time for reaching full power.
  • Increases engine power when the ship starts moving.
Details in footnote.[1] Unavailable to British cruisers, but they have high acceleration by default.
Wows_icon_modernization_PCM025_SteeringGear_Mod_II.png

Steering Gears Modification 2

1000000Credits Reduces rudder shift time:
  • -20% to rudder shift time.
  1. Research seems to show that the specific effects are as follows:
    • -50% to time for reaching full power. This is the time needed to "spool" the engines to full power in the direction the ship is traveling, and thus achieve maximum acceleration away from 0 knots. In other words, it increases the second derivative of speed (until the engines reach full power). It will not decrease the time it takes to reverse the engines to decelerate towards 0 knots.
    • Increases engine power when the ship starts moving. This increases the ship's acceleration away from 0 knots when between -6 and 6 knots displayed speed. In other words, it increases the first derivative of speed (within this speed band). It does not improve the ship's deceleration towards 0 knots.

Tier VIII+ Equipment (Slot 5)

Icon Equipment Name Cost Description Notes
Wows_icon_modernization_PCM026_LookoutStation_Mod_I.png

Target Acquisition System Modification 1

2000000Credits Increases maximum acquisition range:
  • +50% to range of assured acquisition of enemy ships.
  • +20% to spotting range.
  • +20% to the acquisition range of torpedoes.
The spotting mechanics ignore line-of-sight obstacles — such as islands — when within 2 km (3 km with this upgrade) from an enemy. That's the "assured acquisition" range. Stacks with Vigilance when spotting torpedoes.
Wows_icon_modernization_PCM027_ConcealmentMeasures_Mod_I.png

Concealment System Modification 1

2000000Credits Reduces ship detectability range:
  • -10% to detectability radius.
  • +5% to the maximum dispersion of enemy shells that fire on your ship.
Stacks with Concealment Expert.
Wows_icon_modernization_PCM035_SteeringGear_Mod_III.png

Steering Gears Modification 3

2000000Credits Steering Gears Modification 3:
  • -80% to steering gears repair time.
  • -40% to rudder shift time.
Stacks with Steering Gears Modification 2. Unavailable to battleships or aircraft carriers.

Tier IX+ Equipment (Slot 6)

Icon Equipment Name Cost Description Notes
Wows_icon_modernization_PCM013_MainGun_Mod_III.png

Main Battery Modification 3

3000000Credits Decreases main battery loading time:
  • -12% to main battery loading time.
  • -13% to the main battery traverse speed.
Guns reload faster in exchange for slower turret traverse. Stacks with Basic Firing Training.
Wows_icon_modernization_PCM014_Torpedo_Mod_III.png

Torpedo Tubes Modification 3

3000000Credits Decreases reload time of torpedo tubes:
  • -15% to torpedo tube reload time.
  • +50% to the risk of torpedo tubes becoming incapacitated.
Stacks with Torpedo Armament Expertise.
Icon_modernization_PCM015_FireControl_Mod_II.png

Gun Fire Control System Modification 2

3000000Credits Extends the firing range of the main battery:
  • +16% to main battery maximum firing range.
Stacks with Advanced Firing Training. Not available to Russian destroyers or American battleships.
Icon_modernization_PCM029_FireControl_Mod_II_US.png

Artillery Plotting Room Modification 2

3000000Credits Increases the firing accuracy of the main battery:
  • -11% to maximum dispersion of main battery.
Available only to American battleships.
Wows_icon_modernization_PCM016_FlightControl_Mod_II.png

Flight Control Modification 2

3000000Credits Increases aircraft speed:
  • +5% to maximum aircraft speed.
Applicable to all aircraft; available only to aircraft carriers.
Wows_icon_modernization_PCM017_Airplanes_Mod_III.png

Air Groups Modification 3

3000000Credits Increases attack aircraft HP:
  • +15% to attack aircraft survivability.
Applicable to Torpedo Bomber and Dive Bomber aircraft; available only to aircraft carriers.
Icon_modernization_PCM018_AirDefense_Mod_III.png

AA Guns Modification 3

3000000Credits Increases AA effectiveness:
  • +25% to average damage per second of AA mounts.
Affects damage per second of all AA guns. Stacks with Basic Firing Training.
Wows_icon_modernization_PCM019_SecondaryGun_Mod_III.png

Secondary Battery Modification 3

3000000Credits Decreases secondary battery loading time:
  • -20% to secondary battery loading time.
Stacks with Basic Firing Training.

Special Upgrades

Special upgrades are upgrades that are obtainable only through supercontainers or the Arsenal. These upgrades are available for use in specific slots and generally restricted to ships Tier VI and above. Ships must be able to equip the corresponding consumable in order to mount these upgrades (e.g. Des Moines cannot mount Smoke Generator Modification 1 and Gearing cannot mount Surveillance Radar Modification 1); however, they are not automatically compatible with all ships that can mount certain consumables (Missouri cannot mount Surveillance Radar Modification 1, for example). They are mounted normally like other upgrades (you can only have one upgrade in a slot at a time).

Special upgrades that modify the effects of a corresponding consumable have no effect if that consumable is not mounted. For instance, Defensive AA Fire Modification 1 functions only if a Defensive AA Fire (While active, damage per second of large caliber anti-aircraft guns increased.) consumable is also mounted.

Slot 1

Icon Equipment Name Selling Price Description Notes Restrictions
Wows_icon_modernization_PCM039_CrashCrew_Mod_I.png

Damage Control Party Modification 1

625,000Credits Increases Damage Control Party duration: This modification is available via the Arsenal, and could also be purchased in the Clash of the Elements Gift Shop as part of the special event. Tier VI-X ships only.
Wows_icon_modernization_PCM038_Spotter_Mod_I.png

Spotting Aircraft Modification 1

625,000Credits Increases Spotting Aircraft duration: This modification is available via the Arsenal, and could also be purchased in the Clash of the Elements Gift Shop as part of the special event. Tier VI-X battleships and cruisers only.

Slot 2

Icon Equipment Name Selling Price Description Notes Restrictions
Wows_icon_modernization_PCM036_SpeedBooster_Mod_I.png

Engine Boost Modification 1

625,000Credits Increases Engine Boost duration: This modification is available via the Arsenal, and could also be purchased in the Clash of the Elements Gift Shop as part of the special event. Tier VI-X cruisers and destroyers and Tier VIII+ battleships only.
Wows_icon_modernization_PCM040_AirDefenseDisp_Mod_I.png

Defensive AA Fire Modification 1

625,000Credits Increases Defensive AA Fire duration: This modification is available via the Arsenal, and could also be purchased in the Clash of the Elements Gift Shop as part of the special event. Tier VIII-X ships only.
Wows_icon_modernization_PCM041_SonarSearch_Mod_I.png

Hydroacoustic Search Modification 1

625,000Credits Increases Hydroacoustic Search duration: This modification is available via the Arsenal, and could also be purchased in the Clash of the Elements Gift Shop as part of the special event. Tier VI-X destroyers and cruisers only.
Wows_icon_modernization_PCM042_RLSSearch_Mod_I.png

Surveillance Radar Modification 1

625,000Credits Increases Surveillance Radar duration: This modification is available via the Arsenal, and could also be purchased in the Clash of the Elements Gift Shop as part of the special event. Tier IX-X destroyers and cruisers only.

Slot 3

Icon Equipment Name Selling Price Description Notes Restrictions
Wows_icon_modernization_PCM037_SmokeGenerator_Mod_I.png

Smoke Generator Modification 1

625,000Credits Increases Smoke Generator duration:
  • +30% to duration of Smoke Generator (While active, generates a smoke screen that blocks line-of-sight for both enemies and teammates.).
  • -5% to duration of smoke clouds produced by Smoke Generator.
This modification is available via the Arsenal, and could also be purchased in the Clash of the Elements Gift Shop as part of the special event. Tier VI-X destroyers and cruisers only.

Unique Upgrades ("Legendary" Upgrades)

Unique (sometimes referred to as "Legendary") upgrades are Tier X ship-specific upgrades that are obtainable only through mission chains that relate to each Tier X ship available for credits in the tech tree. The aim of these upgrades is to adjust the characteristics of a ship to make it perform better in a specific role or offer an alternative style of gameplay. However, the unique upgrades are mounted into existing slots and have balancing parameters. They are meant to add to the variability of ship loadouts while keeping ships in balance with each other, even if one ship has the unique upgrade and another does not.

These upgrades are available for use in slots 5 and 6, depending on the ship in question. They are mounted normally like other upgrades (only one upgrade in a slot at a time). They cannot be sold.

To obtain a unique upgrade, players must complete a chain of 5 combat missions in that ship. The chain is unlocked after playing one battle in a Tier X ship, and each step must be completed in sequential order. The missions are shared among all types of battles (even Co-Op) and are the same for all Tier X ships. Each ship must initiate their own chain, and can only progress their own missions.

Mission Chain to Earn Unique Upgrade Modules

  • Mission 1: Earn 100,000 XP (after modifiers are applied).
  • Mission 2: Earn 8,000,000Credits.
  • Mission 3: Earn 15,000 Free XP.
  • Mission 4: Win 15 battles.
  • Mission 5: Earn 40,000 base XP (before any modifiers are applied).

Slot 5

Icon Equipment Name Selling Price Description Notes Restrictions
Icon_modernization_PCM047_Special_Mod_I_Montana.png

Enhanced Damage Control System

2,500,000Credits
  • –30% to flooding recovery time.
  • –15% to fire extinguishing time.
  • –70% to steering gears repair time.
  • –30% to rudder shift time.
Available only via in-game missions. Montana only.
Icon_modernization_PCM043_Special_Mod_I_Conqueror.png

Enhanced Engineering Systems

2,500,000Credits
  • +13% to main turrets traverse speed.
  • –80% to steering gears repair time.
  • –40% to rudder shift time.
Available only via in-game missions. Conqueror only.
Icon_modernization_PCM049_Special_Mod_I_Hindenburg.png

Enhanced Repair Party

2,500,000Credits
  • –20% to rudder shift time.
  • –70% to flooding recovery time.
  • –40% to fire extinguishing time.
  • –50% to main battery repair time.
Available only via in-game missions. Hindenburg only.
Icon_modernization_PCM050_Special_Mod_I_Henri_IV.png

Increased Firing Elevation of Artillery

2,500,000Credits
  • –12% to main battery loading time.
  • +8% to main battery maximum firing range.
  • +10% to detectability.
Available only via in-game missions. Henri IV only.
Icon_modernization_PCM051_Special_Mod_I_Minotaur.png

Enhanced Smoke Generator

2,500,000Credits
  • +150% to total smoke screen generation time.
  • +10% to maximum dispersion of shells fired by the enemy attacking your ship.
  • –5% to detectability range by sea.
  • –15% to duration of smoke screen.
Available only via in-game missions. Minotaur only.
Icon_modernization_PCM053_Special_Mod_I_Worcester.png

Enhanced Countermeasures

2,500,000Credits Available only via in-game missions. Worcester only.
Icon_modernization_PCM055_Special_Mod_I_Khabarovsk.png

Heavyweight Artillery

2,500,000Credits
  • –6% to main battery loading time.
  • +8% to main battery maximum firing range.
  • –13% to main turrets traverse speed.
Available only via in-game missions. Khabarovsk only.
Icon_modernization_PCM056_Special_Mod_I_Z_52.png

Low-Profile Torpedo Tubes

2,500,000Credits
  • –5% to detectability.
  • –15% to torpedo tubes reload time.
Available only via in-game missions. Z-52 only.
Icon_modernization_PCM058_Special_Mod_I_Gearing.png

Modified Hull

2,500,000Credits
  • –15% to detectability.
  • +5% to maximum dispersion of shells fired by the enemy attacking your ship.
  • +15% to main battery loading time.
  • +5% to torpedo tubes reload time.
Available only via in-game missions. Gearing only.
Icon_modernization_PCM059_Special_Mod_I_Yueyang.png

Enhanced Armaments

2,500,000Credits
  • –10% to main battery loading time.
  • –10% to torpedo tubes reload time.
  • –15% to duration of smoke screens.
  • –15% to duration of Surveillance Radar (While active, detects all enemy ships within the specified radius, regardless of obstacles (such as smoke screens or islands).).
Available only via in-game missions. Yueyang only.

Slot 6

Icon Equipment Name Selling Price Description Notes Restrictions
Icon_modernization_PCM044_Special_Mod_I_Republique.png

Additional Main Battery Loader

2,500,000Credits
  • –18% to main battery loading time.
  • –13% to main turrets traverse speed.
  • –24% to main battery maximum firing range.
Available only via in-game missions. République only.
Icon_modernization_PCM045_Special_Mod_I_GKurfurst.png

Enhanced Main Armaments

2,500,000Credits
  • –15% to main battery loading time.
  • –15% to secondary battery loading time.
  • –7% to main turrets traverse speed.
  • –8% to main battery maximum firing range.
Available only via in-game missions. Großer Kurfürst only.
Icon_modernization_PCM046_Special_Mod_I_Yamato.png

Enhanced Main Battery Guns

2,500,000Credits
  • –6% to main battery loading time
  • –7% to maximum dispersion of main battery shells.
  • –19% to main turrets traverse speed.
Available only via in-game missions. Yamato only.
Icon_modernization_PCM048_Special_Mod_I_Zao.png

Enhanced Main Battery and Steering Gears

2,500,000Credits
  • –20% to rudder shift time.
  • –7% to maximum dispersion of main battery shells.
  • +8% to main battery maximum firing range.
Available only via in-game missions. Zao only.
Icon_modernization_PCM052_Special_Mod_I_Des_Moines.png

Enhanced Propulsion

2,500,000Credits
  • –50% to time taken to reach full power when accelerating (improved acceleration[1]).
  • –20% to rudder shift time.
  • –10% to duration of Surveillance Radar (While active, detects all enemy ships within the specified radius, regardless of obstacles (such as smoke screens or islands).).
Available only via in-game missions. Des Moines only. When combined with Propulsion Modification 2 (-50% to time for reaching full power. / Increases engine power when the ship starts moving.), the ship will accelerate from 0-27 knots in approximately 8 seconds.
Icon_modernization_PCM054_Special_Mod_I_Moskva.png

Heavyweight Main Battery Guns

2,500,000Credits
  • –11% to maximum dispersion of main battery shells.
  • +8% to main battery maximum firing range.
  • –13% to main turrets traverse speed.
Available only via in-game missions. Moskva only.
Icon_modernization_PCM057_Special_Mod_I_Shimakaze.png

Accelerated Torpedo Tube Reloading

2,500,000Credits
  • –25% to torpedo tube reload time.
  • +50% to risk of torpedo tubes becoming incapacitated.
  • –80% to torpedo tube traverse speed.
Available only via in-game missions. Shimakaze only.
Icon_modernization_PCM060_Special_Mod_I_Grozovoi.png

Recoilless Main Battery Guns

2,500,000Credits
  • –18% to main battery loading time.
  • –7% to main turrets traverse speed.
  • +10% to torpedo tube reload time.
Available only via in-game missions. Grozovoi only.
Icon_modernization_PCM061_Special_Mod_I_Midway.png

Reinforced Armor Protection for Strike Air Groups

2,500,000Credits
  • +30% to attack aircraft HP.
  • –5% to aircraft cruise speed.
Available only via in-game missions. Midway only.
Icon_modernization_PCM062_Special_Mod_I_Hakuryu.png

Enhanced Flight Control and Air Groups

2,500,000Credits
  • +5% to aircraft cruise speed.
  • +10% to fighters HP.
Available only via in-game missions. Hakuryu only.
  1. In addition to increasing the speed at which the engine spools up, this upgrade appears to increase acceleration away from 0 knots by a large factor (about triple, regardless of speed), making it more powerful than the standard Propulsion Modification 2 which only doubles acceleration and only between -6 and +6 knots. However, like that upgrade, it does not improve deceleration towards 0 knots. Example video.