Naval technology

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Note, in-game these technologies appear on two tabs: Escorts and Capital. They are here divided in the same manner. Most naval technologies, once researched, cannot be applied to preexisting ships by Upgrade.

Escorts

One-Time Techs

Name Prerequisite Difficulty Research Bonus Year Knowledge on Completion Effects
Assault Ships Landing Craft
Invasion Tactics - 2
Landing Craft Support - 2
10 Naval Engineering 1.0 1942 Naval Engineering Assault Ship - Activated
Destroyer 1 Naval Engineering 1.0 1918 Naval Engineering Destroyers - Activated
Naval Base - Activated
Landing Craft Destroyer 8 Naval Engineering 1.0 1940 Naval Engineering Landing Craft - Activated
Light Cruiser 1 Destroyer Practical 0.7
Naval Engineering 0.3
1918 Naval Engineering Light Cruiser - Activated
Coastal Fort - Activated
Submarine Technology At least 1 Naval Base 7 Submarine Engineering 1.0 1918 Submarine Engineering Submarine - Activated

Scaled Techs

Max level of 12

Technologies marked with a * can be applied to previously existing ships by Upgrade

Name Prerequisite Difficulty Research Bonus Start Year First Offset Additional Offset Knowledge on Completion Effects
Destroyer Anti-Aircraft Armament * Destroyer 1 Destroyer Practical 0.6
Naval Engineering 0.3
Fleet In Being Doctrine 0.1
1918 1934 2 Naval Engineering Destroyers - Air Attack +1.25, Air Defence +1
Destroyer Armour Destroyer 1 Destroyer Practical 0.6
Naval Engineering 0.3
Fleet In Being Doctrine 0.1
1918 1934 2 Naval Engineering Destroyers - Hull +0.05
Destroyer Engine Destroyer 1 Destroyer Practical 0.6
Naval Engineering 0.3
Fleet In Being Doctrine 0.1
1918 1934 2 Naval Engineering Destroyers - Sea Defence +2, Mission Max Range +400, Maximum Speed +2, Fuel Consumption +0.01
Destroyer Main Armament Destroyer 1 Destroyer Practical 0.6
Naval Engineering 0.3
Fleet In Being Doctrine 0.1
1918 1934 2 Naval Engineering Destroyers - Convoy Attack +0.5, Sea Attack +0.25
Invasion Tactics * Landing Craft 4 Naval Engineering 1.0 1940 1942 2 Naval Engineering Assault Ships - Amphibious invasion speed +0.1
Landing Craft - Amphibious invasion speed +0.1
Transport - Amphibious invasion speed +0.1
Landing Craft Support * Landing Craft 5 Naval Engineering 1.0 1940 1942 2 Naval Engineering Assault Ships - Amphibious craft defence +0.1
Landing Craft - Amphibious craft defence +0.1
Transport - Amphibious craft defence +0.1
Light Cruiser Anti-Aircraft Armament * Light Cruiser 1 Cruiser Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1 0.1
1918 1934 2 Naval Engineering Light Cruiser - Air Attack +1.5, Air Defence +1.5
Light Cruiser Armour Light Cruiser 1 Cruiser Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1
1918 1934 2 Naval Engineering Light Cruiser - Hull +0.05
Light Cruiser Engine Light Cruiser 1 Cruiser Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1
1918 1934 2 Naval Engineering Light Cruiser - Sea Defence +1.5, Mission Max Range +500, Maximum Speed +1.5, Fuel Consumption +0.01
Light Cruiser Main Armament Light Cruiser 1 Cruiser Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1
1918 1934 2 Naval Engineering Light Cruiser - Convoy Attack +0.5, Sea Attack +0.5
Small Warship Radar * Light Cruiser OR Destroyer
IF < 3, RADAR (Industry technology) - 1
IF >= 3, RADAR (Industry technology) - 3
2 Electronic Engineering Theory 0.5
Cruiser Practical 0.25
Destroyer Practical 0.25
1939 1940 2 Electronic Engineering Theory Destroyers - Surface Detection +1, Air Detection +1, Night: Attack +10%
Light Cruiser - Surface Detection +1, Air Detection +1, Night: Attack +10%
Small Warship ASW * Light Cruiser OR Destroyer
IF < 3, Radar (Industry technology) - 1
IF >= 3, Radar (Industry technology) - 3
3 Electronic Engineering Theory 0.5
Cruiser Practical 0.25
Destroyer Practical 0.25
1940 1941 3 Electronic Engineering Theory Destroyers - Submarine Attack +2, Submarine Detection +4
Light Cruiser - Submarine Attack +1, Submarine Detection +3
Sonar and Detection Equipment * Submarine Technology
RADAR (Industry technology) - 1
3 Submarine Practical 0.7
Electronic Engineering Theory 0.3
1939 1940 2 Electronic Engineering Theory Submarine - Sea Defence +0.75, Surface Detection +2, Submarine Detection +1
Submarine Air Warning Equipment * Submarine Technology
RADAR (Industry technology) - 1
3 Submarine Practical 0.7
Electronic Engineering Theory 0.3
1939 1940 2 Electronic Engineering Theory Submarine - Air Detection +0.5
Submarine Anti-Aircraft Armament * Submarine Technology 1 Submarine Practical 0.6
Submarine Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 3 Submarine Engineering Submarine - Air Attack +0.25, Air Defence +1
Submarine Engine Submarine Technology 1 Submarine Practical 0.6
Submarine Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 3 Submarine Engineering Submarine - Sea Defence +0.25, Max Mission Range +900, Maximum Speed +1.5, Fuel Consumption +0.015
Submarine Hull Submarine Technology 3 Submarine Practical 0.6
Submarine Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 3 Submarine Engineering Submarine - Visibility -1
Submarine Torpedoes * Submarine Technology 1 Submarine Practical 0.6
Submarine Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 3 Submarine Engineering Submarine - Convoy Attack +4.5, Sea Attack +0.25

Capital

One-Time Techs

Name Prerequisite Difficulty Research Bonus Year Knowledge on Completion Effects
Aircraft Carrier Technology Escort Carrier Technology
At least 1 Naval Base
3 Capital Ship Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1
1918 Naval Engineering Carrier - Activated
Battlecruiser Construction At least 1 Naval Base 2 Capital Ship Practical 0.7
Naval Engineering 0.3
1918 Naval Engineering Battlecruiser - Activated
Battleship Construction At least 1 Naval Base 3 Capital Ship Practical 0.7
Naval Engineering 0.3
1918 Naval Engineering Battleship - Activated
Carrier Aircraft Development Single-Engine Aircraft (Air technology)
At least 1 Naval Base
1 Capital Ship Practical 0.4
Aeronautical Engineering 0.3
Single Engine Aircraft Practical 0.3
1918 Aeronautical Engineering Carrier Air Group - Activated
Escort Carrier Technology Carrier Aircraft Development
At least 1 Naval Base
2 Capital Ship Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1
1918 Naval Engineering Escort Carrier - Activated
Heavy Cruiser At least 1 Naval Base 1 Cruiser Practical 0.7
Naval Engineering 0.3
1918 Naval Engineering Heavy Cruiser - Activated
SH Battleship Construction Battleship Construction
Battleship Anti-Air Armament - 2
Battleship Armour - 2
Battleship Engine - 2
Capital Ship Main Armament - 2
4 Capital Ship Practical 0.7
Naval Engineering 0.3
1938 Naval Engineering SH Battleship - Activated

Scaled Techs

Name Prerequisite Difficulty Research Bonus Start Year First Offset Additional Offset Knowledge on Completion Effects
Aircraft Carrier Anti-Aircraft Armament * Aircraft Carrier Technology 3 Carrier Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1
1918 1934 2 Naval Engineering Carrier - Air Attack +0.5, Air Defence +1
Escort Carrier - Air Attack +0.5, Air Defence +1
Aircraft Carrier Armour Aircraft Carrier Technology 3 Carrier Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1
1918 1934 2 Naval Engineering Carrier - Hull +0.1
Escort Carrier - Hull +0.08
Aircraft Carrier Engine Aircraft Carrier Technology 3 Carrier Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1
1918 1934 2 Naval Engineering Carrier - Sea Defence +0.5, Mission Max Range +600, Maximum Speed +1, Fuel Consumption +0.01
Escort Carrier - Sea Defence +1, Mission Max Range +500, Maximum Speed +0.5, Fuel Consumption +0.01
Aircraft Carrier Hangar Aircraft Carrier Technology 3 Carrier Practical 0.6
Naval Engineering 0.3
Base Strike Doctrine 0.1
1918 1934 2 Naval Engineering Carrier - Visibility -3
Escort Carrier - Visibility -3
Battlecruiser Anti-Aircraft Armament * Battlecruiser Construction 2 Capital Ship Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 2 Naval Engineering Battlecruiser - Air Attack +0.5, Air Defence +1
Battlecruiser Armour Battlecruiser Construction 2 Capital Ship Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 2 Naval Engineering Battlecruiser - Hull +0.08
Battlecruiser Engine Battlecruiser Construction 2 Capital Ship Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 2 Naval Engineering Battlecruiser - Sea Defence +0.5, Mission Max Range +600, Maximum Speed +1, Fuel Consumption +0.01
Battleship Anti-Aircraft Armament * Battleship Construction 3 Capital Ship Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 2 Naval Engineering Battleship - Air Attack +0.5, Air Defence +1
SH Battleship - Air Attack +0.35, Air Defence +0.65
Battleship Armour Battleship Construction 3 Capital Ship Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 2 Naval Engineering Battleship - Hull +0.1
Battleship Engine Battleship Construction 3 Capital Ship Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 2 Naval Engineering Battleship - Sea Defence +0.25, Mission Max Range +600, Maximum Speed +0.5, Fuel Consumption +0.01
Capital Ship Main Armament Battleship Construction OR Battlecruiser Construction 3 Capital Ship Practical 0.7
Naval Engineering 0.3
1918 1934 2 Naval Engineering Battleship - Convoy Attack +1, Sea Attack +2
Battlecruiser - Convoy Attack +1, Sea Attack +1.5
Heavy Cruiser Anti-Aircraft Armament * Heavy Cruiser 1 Cruiser Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1 0.1
1918 1934 2 Naval Engineering Heavy Cruiser - Air Attack +1.5, Air Defence +1.5
Heavy Cruiser Armour Heavy Cruiser 1 Cruiser Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 2 Naval Engineering Heavy Cruiser - Hull +0.05
Heavy Cruiser Engine Heavy Cruiser 1 Cruiser Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 2 Naval Engineering Heavy Cruiser - Sea Defence +1, Mission Max Range +600, Maximum Speed +1.5, Fuel Consumption +0.01
Heavy Cruiser Main Armament Heavy Cruiser 1 Cruiser Practical 0.6
Naval Engineering 0.3
Sealane Interdiction Doctrine 0.1
1918 1934 2 Naval Engineering Heavy Cruiser - Convoy Attack +0.5, Sea Attack +1
Large Warship Radar * Aircraft Carrier Technology OR Battlecruiser Construction OR Battleship Construction OR Heavy Cruiser
IF <3, RADAR (Industry technology) - 1
IF >=3, RADAR (Industry technology) - 3
2 Electronic Engineering Theory 0.4
Capital Ship Practical 0.2
Carrier Practical 0.2
Cruiser Practical 0.2
1939 1940 2 Electronic Engineering Theory Battlecruiser - Surface Detection +1, Air Detection +1, Night: Attack +10%
Battleship - Surface Detection +1, Air Detection +1, Night: Attack +10%
Carrier - Surface Detection +1, Air Detection +1, Night: Attack +10%
Escort Carrier - Surface Detection +1, Air Detection +1, Night: Attack +10%
Heavy Cruiser - Surface Detection +1, Air Detection +1, Night: Attack +10%
SH Battleship - Surface Detection +1, Air Detection +1, Night: Attack +10%