Repair

This Skill accelerates repairs to damaged modules.

Effectiveness increases with skill level.

Camouflage

This Skill reduces vehicle visibility.

Effectiveness increases with skill level.

Firefighting

This Skill enhances firefighting abilities.

Effectiveness increases with skill level.

Brothers in Arms

This Perk improves major qualifications and all Skills for the entire Crew. The Perk is more effective when combined with Improved Ventilation, Extra Combat Rations, Chocolate, Case of Cola, and Strong Coffee.

This Perk comes into effect after it reaches 100% for the entire Crew.

Band of Brothers

This Perk improves major qualifications and all Skills for the entire Crew.

This is a Perk. Perks only take effect once it reaches 100%.

This works even if another crew member has acquired the "Brothers in Arms" Perk.

Sixth Sense

This Perk allows the Commander to identify whether the vehicle is detected by the enemy.

Sixth Sense comes into effect after it reaches 100%.

Recon

This Skill increases Maximum View Range. Recon is more effective if observation devices are damaged, or when combined with Situational Awareness, Coated Optics and Binocular Telescope.

Effectiveness increases with skill level.

Mentor

This Skill provides additional XP to all Crew members except the Commander. 

The amount of Experience increases with Skill level.

Eagle Eye

This Perk allows the Commander to identify critically damaged modules on targeted vehicles.

Eagle Eye comes into effect after it reaches 100%.

Jack of All Trades 

This Skill enables the Commander to master every qualification and replace knocked-out Crew members.

Snap Shot

This Skill improves accuracy during turret rotation. Snap Shot is more effective when combined with Vertical Stabilizer.

The effect increases with Skill level. If two Gunners have the Skill, only the higher rating is effective.

Designated Target

This Perk makes targeted enemy vehicles visible for two more seconds. 

Designated Target comes into effect after it reaches 100%. If two Gunners have the Perk, the effect is not cumulative.

Deadeye 

This Perk increases the chance to critically damage enemy vehicle modules and Crew. 

Deadeye comes into effect after it reaches 100%, and is only effective with AP and APCR shells.

Smooth Ride

This Skill improves accuracy when firing on the move. Smooth Ride does not affect the vehicle when stationary or rotating, and is more effective when combined with Vertical Stabilizer.

Effectiveness increases with skill level.

Off-Road Driving 

This Skill reduces ground resistance when driving on soft and moderately soft terrain. Lower ground resistance increases vehicle maneuverability and acceleration. The Skill is more effective when combined with Additional Grousers.

The effect increases with Skill level.

Clutch Braking

This Skill increases vehicle rotation speed. Clutch Breaking is more effective when combined with Additional Grousers, Lend-Lease Oil, Removed Speed Governor, 100-octane Gasoline, and 105-octane Gasoline.

Effectiveness increases with skill level

Preventative Maintenance

The Perk reduces the chance of engine fire by preventing gas or oil leakage in the engine compartment. 

The Perk comes into effect after it reaches 100%.

Controlled Impact

This Skill decreases ramming damage to your vehicle and increases ramming damage to an enemy vehicle. Controlled Impact is effective only while both vehicles are in motion, except when two allied vehicles collide.

The effect increases with Skill level.

Situational Awareness

This Skill extends View Range. Situational Awareness is more effective when combined with Recon.

The effect increases with Skill level. If two Radio Operators have the Skill, only the higher rating is effective.

Call for Vengeance

This Perk enables a Radio Operator who survived the destruction of his vehicle to report enemy positions for another two seconds. 

Call for Vengeance comes into effect after it reaches 100%. If two Radio Operators have the Perk, the effect is not cumulative.

Signal Boosting

This Skill extends Signal Range. 

The effect increases with Skill level. If two Radio Operators have the Skill, only the higher rating is effective.

Relaying 

This Skill extends Signal Range of allied communications within vehicle's radio coverage. If two Radio Operators have the Skill, only the higher rating is effective.

The effect increases with Skill level.

Safe Stowage

This Perk increases ammo rack durability (the shells do not come into contact with each other).  This Perk is more effective when combined with "Wet" Ammo Rack.

Safe Stowage comes into effect after it reaches 100%. If two Loaders have the Perk, the effect is not cumulative.

Adrenaline Rush

This Perk accelerates gun loading if the vehicle has less than 10% of its hit points left. Adrenaline Rush is more effective when combined with Gun Rammer.

Adrenaline Rush comes into effect after it reaches 100%. If two Loaders have the Perk, the effect is not cumulative.

Intuition

This Perk creates a chance that the proper shell is already loaded when switching between shell types. The gun must be completely loaded before the Perk can be used again. 

Intuition comes into effect after it reaches 100%. If two Loaders have the Perk, the effect is not cumulative.

Slot Category: Survivability

When you install an equipment of matching type in this slot, the equipment's performance will be boosted.

Slot Category: Mobility

When you install an equipment of matching type in this slot, the equipment's performance will be boosted.

Slot Category: Firepower

When you install an equipment of matching type in this slot, the equipment's performance will be boosted.

Slot Category: Scouting

When you install an equipment of matching type in this slot, the equipment's performance will be boosted.

Improved Ventilation

・+5% / +6% to all crew skills.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Gun Rammer

・-10% / -11.5% to loading time.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Enhanced Gun Laying Drive

・+10% / -11.5% to aiming speed.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Vertical Stabilizer

・-20% / -23% to dispersion during vehicle movement and traversal.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Improved Aiming

・-5% / -7% to the aiming circle size.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Improved Rotation Mechanism

・-10% / -12.5% to dispersion during vehicle movement and traversal, as well as during turret rotation.

・+10% / +12.5% to hull and turret traverse speed.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Spall Liner

・+50% / +60% to HE-shell and ramming damage.

・+50% / +60% to to protection of crew from injuries.

・-10% / -15% to stun duration.

・-20% / -25% to additional stun duration.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Improved Hardening

・Fully restores suspension hit points after repairs.

・+8% / +10% to vehicle hit points.

・+50% / +65% to suspension durability.

・-50% / -65% to hull damage caused by suspension damage during impact.

・+15% / +20% to suspension repair speed.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Modified Configuration

・Prevents one fuel tank fire, ammo rack explosion, or engine destruction in one battle.

・+100% / +150% to ammo rack, fuel tank, and engine durability

・-50% / -65% to the damaged ammo rack penalty and damaged engine penalty.

・-50% / -65% to the chance of engine fire.

・+25% / +35% to repair speed.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Additional Grousers

・+15% / +20% to hull traverse speed.

・+10% / +15% to maintaining speed.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Turbocharger

・+7.5% / +10% to engine power.

・+4km/h / +5km/h to top forward speed.

・+2km/h / +3km/h to reverse speed.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Binocular Telescope

・=+25% / +27.5% to view range of a stationary vehicle

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Coated Optics

・+10% / +11.5% to view range of a stationary vehicle

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Camouflage Net

・Reduces the detection chance of a stationary vehicle:

+5% / +7.5% to heavy tanks and SPGs.

+10% / +12.5% to light and medium tanks.

+15% / +17.5% to tank destroyers.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Low Noise Exhaust System

・Reduces the visibility of a stationary or moving vehicle:

+3% / +4% to heavy tanks and SPGs.

+6% / +8% to light and medium tanks.

+5% / +6% to tank destroyers.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Improved Radio Set

・+1.5s / +2s to the duration an enemy vehicle is visible.

・-1.5s / -2s to the duration your vehicle is visible to the enemy.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Commander's Vision System

・-10% / -12.5% to concealment of moving enemy vehicles.

・-15% / -20% to concealment of enemy vehicles behind foliage.

※ The first value is the base effect. The second value is the improved effect, achieved when the equipment and slot category matches.

Field Modification

Module Durability Increase

・Damaged ammo rack penalty and damaged engine penalty：-50%

・Dispersion of the damaged gun：-20%

・Hull traverse speed：-4% 

・Turret traverse speed：-4% 

Light-Alloy Mounting Points

・Hull traverse speed：+4% 

・Turret traverse speed：+4% 

・Damaged ammo rack penalty and damaged engine penalty：+50% 

・Dispersion of the damaged gun：+20% 

Suspension Arm Tuning

・Dispersion during movement and hull traversal：-3% 

・Accuracy：-3% 

Improved Sight

・Accuracy：+3% 

・Dispersion during movement and hull traversal：+3% 

Turbocharger Tuning

・Reverse speed：+2km/h

・Suspension repair speed：+5%

・Concealment：-3%

Anti-Reflective Headlights Coating

・Concealment：+3%

・Reverse speed：-2km/h

・Suspension repair speed：-5%

Loading Mechanism Tuning

・Reload time：-3%

・Accuracy：-5%

Aiming Mechanism Tuning

・Accuracy：+5%

・Reload time：+3%

PTO Tuning

・Engine power：+5% 

・Aiming time：+5% 

Electric Aiming Drive

・Aiming time：-5% 

・Engine power：-5% 

Heavy-Gauge Nozzles

・Top speed：+2km/h 

・View range：-3% 

Sensitive Optics

・View range：+3% 

・Top speed：-2km/h 

Reinforced Support Rollers

・Suspension durability：+30% 

・Suspension repair speed：-10% 

・Hull traverse speed：-5% 

Lightweight Support Rollers

・Suspension repair speed：+10% 

・Hull traverse speed：+5% 

・Suspension durability：-30% 

All-Terrain Suspension

・Effectiveness of maintaining speed when crossing all terrain types：+7% 

・Hull traverse speed：-5% 

・Suspension durability：-10% 

Lightweight Suspension

・Effectiveness of maintaining speed when crossing all terrain types：-7% 

・Hull traverse speed：+5% 

・Suspension durability：+10% 

Parallax Adjustment

・Accuracy：+3% 

・Aiming time：+5% 

Aiming Gears Lapping

・Aiming time：-5% 

・Accuracy：-3% 

Additional Noise Insulation

・Stun duration：-10% 

・Additional stun duration：-15% 

・View range：-3% 

Periscope Electric Drive

・View range：+3% 

・Stun duration：+10% 

・Additional stun duration：+15% 

Reinforced Turret

・HE damage：-15% 

・Stun duration：-8% 

・Protection of the crew from injuries：+20% 

・Hull traverse speed：-5% 

・Top speed：-2km/h 

Lightweight Turret

・Hull traverse speed：+5% 

・Top speed：+2km/h 

・HE damage：+15% 

・Stun duration：+8% 

・Protection of the crew from injuries：-20% 

Auxiliary Safety System

・Durability of internal modules：+30% 

・Repair speed：+5% 

・Turret traverse speed：-5% 

・Dispersion during turret traverse：+5% 

Lightweight Mounting Points

・Turret traverse speed：+5% 

・Dispersion during turret traverse：-5% 

・Durability of internal modules：-30% 

・Repair speed：-5%