Main battery shell type switching time: -40 %
Gun Feeder
Tier 1 · Column 1 · ID 21
Explosion radius of all munitions, except for depth charges, when attacking submarines: +15 %
Chances of secondary battery HE shells causing a fire on target: +1 %
Chances of main battery HE shells causing a fire on target: +1 %
Demolition Expert
Tier 1 · Column 2 · ID 8
Ship consumables preparation and reload time: -7.5 %
Consumable Specialist
Tier 1 · Column 3 · ID 13
Damage Control Party consumable cooldown time: -3 %
Repair Party consumable cooldown time: -3 %
Emergency Repair Specialist
Tier 1 · Column 4 · ID 5
Incoming Fire Alert
Tier 1 · Column 5 · ID 19
Secondary battery survivability: +15 %
Risk of modules becoming incapacitated: -30 %
AA mount survivability: +15 %
Preventive Maintenance
Tier 1 · Column 6 · ID 18
Main battery traverse speed: +20 %
Chances of causing a fire by HE shells without modifiers applied are reduced by half.
Secondary battery HE shell armor penetration capability: +25 %
Main battery HE shell armor penetration capability: +25 %
Inertia Fuse for HE Shells
Tier 2 · Column 2 · ID 33
Brisk
Tier 2 · Column 3 · ID 61
Torpedo protection: damage reduction: +7 %
Torpedo acquisition range: +25 %
Vigilance
Tier 2 · Column 4 · ID 7
Priority Target
Tier 2 · Column 5 · ID 28
Depth charge damage: +10 %
Continuous AA damage: +15 %
Damage from AA shell explosions: +15 %
Airstrike depth charge damage: +10 %
AA Defense and ASW Expert
Tier 2 · Column 6 · ID 35
Damage taken from flooding: -10 %
Damage taken from fires: -10 %
Fire extinguishing time: +25 %
Flooding recovery time: +25 %
Main battery AP shell damage: +7.5 %
Super-Heavy AP Shells
Tier 3 · Column 1 · ID 37
Secondary battery firing range: +20 %
Long-Range Secondary Battery Shells
Tier 3 · Column 2 · ID 40
Secondary battery reload time: -0.2 %
Torpedo tube reload time: -0.2 %
Airstrike armament reload time: -0.2 %
Main battery reload time: -0.2 %
Continuous AA damage: +0.2 %
Adrenaline Rush
Tier 3 · Column 3 · ID 23
Fire extinguishing time: -15 %
Flooding recovery time: -15 %
Module restoration time: -15 %
Basics of Survivability
Tier 3 · Column 4 · ID 2
Repair Party consumable cooldown time: -0.8 %
Improved Repair Party Readiness
Tier 3 · Column 5 · ID 44
AA Defense Priority reinforcement: +25 %
Airstrike armament reload time: -15 %
Damage caused with AA Defense Priority activated: +1.5 %
Aircraft preparation time: -10 %
Number of shell explosions in AA salvos: +1
Focus Fire Training
Tier 3 · Column 6 · ID 27
Furious
Tier 4 · Column 1 · ID 81
Secondary battery reload time: -10 %
Maximum secondary battery shell dispersion: -10 %
Manual Secondary Battery Aiming
Tier 4 · Column 2 · ID 26
Close Quarters Combat
Tier 4 · Column 3 · ID 62
Repair Party consumable action time: +10 %
Repair Party consumable total usage time: +10 %
Damage Control Party consumable action time: +10 %
Number of Damage Control Party consumable charges: +1
Number of Repair Party consumable charges: +1
Emergency Repair Expert
Tier 4 · Column 4 · ID 42
Ship's detectability range: -10 %
Concealment Expert
Tier 4 · Column 5 · ID 12
Risk of catching fire: -10 %
Maximum number of fires: -1
Fire Prevention Expert
Tier 4 · Column 6 · ID 14
U.S.A.
