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Equipment variants are concrete, country-specific classes of equipment which are based on an equipment type. They may include customizations such as design companies, upgrades, or modules.

Base

When a country unlocks an equipment type by researching the corresponding technology, a base variant of it gets created. Where applicable, it uses the design company the country has at that moment. It is not necessary to already have the design company when the research starts.

Upgrade

Several types of equipment can be further upgraded using experience. Upgraded variants may be created of tanks, tank-based weapons, airplanes and ships using experience to upgrade specific attributes. Sometimes a small improvement in speed, protection, or firepower can make a significant difference in the field.

Variants are expensive in XP, so their use should take into account the expected benefit, production volume, and service lifetime of the variant in deciding where to commit these resources. This is especially important for capital ships, as they take a very long time to build and there are large year-gaps between models.

Each upgrade may be selected up to five times and may be made at different times. Existing equipment upgrades may be viewed in the Production screen. Upgrades in one area may reduce performance in another area - e.g., complexity reducing reliability or increased weight-reducing speed. Note that land units may use maintenance support companies that increase reliability for equipment in that division, and also that equipment stats and performance may also be affected by government staff with particular skills that provide modifiers.

For land equipment, the first upgrade level costs 10 experience, for air and naval equipment it costs 25. Each subsequent level costs 5 experience more.

With 炮手就位炮手就位 naval equipment upgrades are not available, as ship classes are designed using modules instead.

List of land equipment upgrades
Upgrade Types Bonuses Penalties
Armor all armor +5% Armor -2% Speed
-5% Reliability
Engine all armor +4% Speed
Reliability all armor +10% Reliability
Tank Gun Tank +3% Soft Attack
+10% Hard Attack
+5% Piercing
-2% Speed
-5% Reliability
AA Gun Self-propelled AA +15% Air Attack -2% Speed
-5% Reliability
AT Gun Tank destroyer +10% Soft Attack
+10% Hard Attack
+5% Piercing
-2% Speed
-5% Reliability
Artillery Self-propelled artillery +3% Soft Attack -2% Speed
-5% Reliability
List of naval equipment upgrades
Upgrade Types Bonuses Penalties
Gun CL
CA
torpedo cruiser
heavy ships
+4% Light Attack
+5% Light Piercing
+4% Heavy Attack
+5% Heavy Piercing
-1% Max Speed
-0.5% Reliability
Torpedo torpedo cruiser
DD
+7.5% Torpedo attack -1% Max Speed
-1% Max Range
Armor CA, heavy ships +5% Armor -1% Speed
Engine CV, heavy ships
CL, CA, torpedo cruiser
+3% Speed
+5% Max Range
-0.5% Reliability
Engine DD +3% Speed
+5% Max Range
Reliability CV, heavy ships, SS
CL, CA, torpedo cruiser
+1.5% Reliability -4% Max Range
Anti-Air CL, DD +5% Anti-air -1% Max Speed
ASW DD +4% Sub Detection
+4% Depth Charge
-1% Torpedo Attack
Torpedo SS +4% Torpedo attack -2% Max Speed
Stealth SS -5% Sub Visibility -2% Max Speed
Engine</span SS +5% Max Speed
+5% Max Range
+5% Sub Visibility
-0.5% Reliability
Deck Space CV +7.5% Deck Space -5% Armor
Armor CV +10% Armor
+1% HP
-4% Deck Space
List of air equipment upgrades
Upgrade Types Bonuses Penalties
Weapons (jet/heavy) fighter, rocket interceptor +10% Air Attack -1% Speed
-10% Reliability
-5% Agility
Weapons carrier fighter +10% Air Attack -1% Speed
-10% Reliability
-15% Agility
Range all non-carrier types +10% Range -10% Reliability
Range all carrier types +15% Range -10% Reliability
Engine all +2% Speed
+5% Agility
Reliability all +10% Reliability
Attack NAV +5% Naval Attack -10% Reliability
Attack carrier NAV +5% Naval Attack -15% Reliability
Bombing (jet) strategic bomber +5% Bombing -10% Reliability
-5% Range
Bombing (jet) TAC +2% Bombing
+2% Ground Attack
-10% Reliability
-5% Agility
Attack (carrier) CAS +2% Air Attack
+5% Ground Attack
-10% Reliability
-5% Agility

Module

Modules extend the capabilities of an equipment variant in a more detailed manner than upgrades. Ship hulls as the basic equipment types offer a number of module slots that can be used. Without 炮手就位炮手就位, researched ship equipment types automatically combine ship hulls and a standard configuration of modules that cannot be changed. With 炮手就位炮手就位, the hulls and modules are researched individually and by spending naval experience are combined in the ship designer.

Statistics

The statistics of an equipment variant are based on the underlying equipment type, its design company, and upgrades or modules. Additive and averaged additive stats from modules are added to the stats of the equipment type. Multiplicative module stats as well as designer and upgrade stats stack additively among each other and are then applied as one factor.

For example if Japan has Mitsubishi as its air design company (+20% agility, +10% speed) while completing research on the 1940 fighter equipment type (agility 65), the resulting equipment variant (Ki-43 Hayabusa) has 65 * 120% = 78 agility. If Japan upgrades this variant with five points into Engine upgrade (5 * 5%), the resulting variant Ki-43 Hayabusa Kai A has 65 * 145% = 94.25 agility.

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