Naval Tech Tree

Tech Tree

Regular

Aircraft
Armor and Artillery
Industry
Infantry
Naval
Secret Weapons

Doctrines

Land
Air
Naval

Destroyer

Great War Destroyer

Historic Year: 1936
Prerequisites: None
Effects:

Activate Unit Type destroyer
New Model destroyer 0

5 - - Great War Destroyer Hull

5 - - Great War Destroyer Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Gun 100

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Great War ASW Equipment

5 - - Great War Destroyer Prototype Testing (D)

Early Destroyer

Historic Year: 1936
Prerequisites:

Great War Destr oyer

Effects:

New Model destroyer 1
Convoy Escort Efficiency 0.05

5 - - Early Destroyer Hull

5 - - Early Destroyer Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Gun 100

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Early ASW Equipment

5 - - Early Destroyer Prototype Testing (D)

Basic Destroyer

Historic Year: 1936
Prerequisites:

Early D estroyer

Effects:

Model is now obsolete. destroyer 0
New Model destroyer 2
Convoy Escort Efficiency 0.05

5 - - Basic Destroyer Hull

5 - - Basic Destroyer Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Gun 120

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic ASW Equipment

5 - - Basic Destroyer Prototype Testing (D)

Improved Destroyer

Historic Year: 1938
Prerequisites:

Basic D estroyer

Effects:

Model is now obsolete. destroyer 1
New Model destroyer 3
Convoy Escort Efficiency 0.05

5 - - Improved Destroyer Hull

5 - - Improved Destroyer Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Gun 120

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Improved ASW Equipment

5 - - Improved Destroyer Prototype Testing (D)

Advanced Destroyer

Historic Year: 1941
Prerequisites:

Improved Dest royer

Effects:

New Model destroyer 4
Model is now obsolete. destroyer 2
Convoy Escort Efficiency 0.05

5 - - Advanced Destroyer Hull

5 - - Advanced Destroyer Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Gun 120

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Advanced ASW Equipment

5 - - Advanced Destroyer Prototype Testing (D)

Semi-Modern Destroyer

Historic Year: 1945
Prerequisites:

Advanced Dest royer

Effects:

New Model destroyer 5
Model is now obsolete. destroyer 3
Convoy Escort Efficiency 0.05

5 - - Semi-Modern Destroyer Hull

5 - - Semi-Modern Destroyer Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Gun 120

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Semi-Modern ASW Equipment

5 - - Semi-Modern Destroyer Prototype Testing (D)

Light Cruiser

Great War Light Cruiser

Historic Year: 1936
Prerequisites: None
Effects:

Activate Unit Type light_cruiser
New Model light_cruiser 0

5 - - Great War Light Cruiser Hull

5 - - Great War Light Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 120

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Great War Anti-Air Equipment

5 - - Great War Light Cruiser Prototype Testing (D)

Early Light Cruiser

Historic Year: 1936
Prerequisites:

Great War Light Cruiser

Effects:

New Model light_cruiser 1

5 - - Early Light Cruiser Hull

5 - - Early Light Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 120

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Early Anti-Air Equipment

5 - - Early Light Cruiser Prototype Testing (D)

Basic Light Cruiser

Historic Year: 1936
Prerequisites:

Early Light Cru iser

Effects:

Model is now obsolete. light_cruiser 0
New Model light_cruiser 2

5 - - Basic Light Cruiser Hull

5 - - Basic Light Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 150

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Anti-Air Equipment

5 - - Basic Light Cruiser Prototype Testing (D)

Improved Light Cruiser

Historic Year: 1938
Prerequisites:

Basic Light Cru iser

Effects:

Model is now obsolete. light_cruiser 1
New Model light_cruiser 3

5 - - Improved Light Cruiser Hull

5 - - Improved Light Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 180

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Improved Anti-Air Equipment

5 - - Improved Light Cruiser Prototype Testing (D)

Advanced Light Cruiser

Historic Year: 1941
Prerequisites:

Improved Light Cruise r

Effects:

New Model light_cruiser 4
Model is now obsolete. light_cruiser 2

5 - - Advanced Light Cruiser Hull

5 - - Advanced Light Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 180

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Advanced Anti-Air Equipment

5 - - Advanced Light Cruiser Prototype Testing (D)

Semi-Modern Light Cruiser

Historic Year: 1945
Prerequisites:

Advanced Light Cruise r

Effects:

New Model light_cruiser 5
Model is now obsolete. light_cruiser 3

5 - - Semi-Modern Light Cruiser Hull

5 - - Semi-Modern Light Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 180

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Semi-Modern Anti-Air Equipment

5 - - Semi-Modern Light Cruiser Prototype Testing (D)

Heavy Cruiser

Great War Heavy Cruiser

Historic Year: 1936
Prerequisites: None
Effects:

Activate Unit Type heavy_cruiser
New Model heavy_cruiser 0

5 - - Great War Heavy Cruiser Hull

5 - - Great War Heavy Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 180

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Surface Ship Torpedo

5 - - Great War Heavy Cruiser Prototype Testing (D)

Early Heavy Cruiser

Historic Year: 1936
Prerequisites:

Great War Heavy Cruiser

Effects:

New Model heavy_cruiser 1

5 - - Early Heavy Cruiser Hull

5 - - Early Heavy Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 180

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Improved Surface Ship Torpedo

5 - - Early Heavy Cruiser Prototype Testing (D)

Basic Heavy Cruiser

Historic Year: 1936
Prerequisites:

Early Heavy Cru iser

Effects:

Model is now obsolete. heavy_cruiser 0
New Model heavy_cruiser 2

5 - - Basic Heavy Cruiser Hull

5 - - Basic Heavy Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 180

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Advanced Surface Ship Torpedo

5 - - Basic Heavy Cruiser Prototype Testing (D)

Improved Heavy Cruiser

Historic Year: 1938
Prerequisites:

Basic Heavy Cru iser

Effects:

Model is now obsolete. heavy_cruiser 1
New Model heavy_cruiser 3

5 - - Improved Heavy Cruiser Hull

5 - - Improved Heavy Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 200

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Surface Ship Homing Torpedo

5 - - Improved Heavy Cruiser Prototype Testing (D)

Advanced Heavy Cruiser

Historic Year: 1941
Prerequisites:

Improved Heavy Cruise r

Effects:

New Model heavy_cruiser 4
Model is now obsolete. heavy_cruiser 2

5 - - Advanced Heavy Cruiser Hull

5 - - Advanced Heavy Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 200

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Improved Surface Ship Homing Torpedo

5 - - Advanced Heavy Cruiser Prototype Testing (D)

[ ]{#Semi-Modern_Heavy_Cruiser_(CL)} Semi-Modern Heavy Cruiser (CL)

Historic Year: 1945
Prerequisites:

Advanced Heavy Cruise r

Effects:

New Model heavy_cruiser 5
Model is now obsolete. heavy_cruiser 3

5 - - Semi-Modern Heavy Cruiser Hull

5 - - Semi-Modern Heavy Cruiser Propulsion

5 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 200

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Cruiser Ship-to-Ship Missiles

5 - - Semi-Modern Heavy Cruiser Prototype Testing (D)

Battlecruiser

Great War Battlecruiser

Historic Year: 1936
Prerequisites: None
Effects:

Activate Unit Type battlecruiser
New Model battlecruiser 0

6 - - Great War Battlecruiser Hull

6 - - Great War Battlecruiser Propulsion

6 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 200

6 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Optical Rangefinder

6 - - Great War Battlecruiser Prototype Testing (D)

Early Battlecruiser

Historic Year: 1936
Prerequisites:

Great War Battlecruiser

Effects:

New Model battlecruiser 1

6 - - Early Battlecruiser Hull

6 - - Early Battlecruiser Propulsion

6 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Cruiser Gun 200

6 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Improved Optical Rangefinder

6 - - Early Battlecruiser Prototype Testing (D)

Basic Battlecruiser

Historic Year: 1936
Prerequisites:

Early Battlecru iser

Effects:

Model is now obsolete. battlecruiser 0
New Model battlecruiser 2

6 - - Basic Battlecruiser Hull

6 - - Basic Battlecruiser Propulsion

6 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battlecruiser Gun 250

6 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Advanced Optical Rangefinder

6 - - Basic Battlecruiser Prototype Testing (D)

Improved Battlecruiser

Historic Year: 1938
Prerequisites:

Basic Battlecru iser

Effects:

Model is now obsolete. battlecruiser 1
New Model battlecruiser 3

6 - - Improved Battlecruiser Hull

6 - - Improved Battlecruiser Propulsion

6 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battlecruiser Gun 250

6 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Decimetric Naval Artillery Radar

6 - - Improved Battlecruiser Prototype Testing (D)

Advanced Battlecruiser

Historic Year: 1941
Prerequisites:

Improved Battlecruise r

Effects:

New Model battlecruiser 4
Model is now obsolete. battlecruiser 2

6 - - Advanced Battlecruiser Hull

6 - - Advanced Battlecruiser Propulsion

6 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battlecruiser Gun 250

6 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Improved Decimetric Naval Artillery Radar

6 - - Advanced Battlecruiser Prototype Testing (D)

Semi-Modern Battlecruiser

Historic Year: 1945
Prerequisites:

Advanced Battlecruise r

Effects:

New Model battlecruiser 5
Model is now obsolete. battlecruiser 3

6 - - Semi-Modern Battlecruiser Hull

6 - - Semi-Modern Battlecruiser Propulsion

6 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battlecruiser Gun 250

6 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Centimetric Naval Artillery Radar

6 - - Semi-Modern Battlecruiser Prototype Testing (D)

Battleship

Great War Battleship

Historic Year: 1936
Prerequisites: None
Effects:

Activate Unit Type battleship
New Model battleship 0

7 - - Great War Battleship Hull

7 - - Great War Battleship Propulsion

7 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battleship Gun 350

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Optical Rangefinder

7 - - Great War Battleship Prototype Testing (D)

Early Battleship

Historic Year: 1936
Prerequisites:

Great War Battles hip

Effects:

New Model battleship 1

7 - - Early Battleship Hull

7 - - Early Battleship Propulsion

7 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battleship Gun 350

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Improved Optical Rangefinder

7 - - Early Battleship Prototype Testing (D)

Basic Battleship

Historic Year: 1936
Prerequisites:

Early Bat tleship

Effects:

Model is now obsolete. battleship 0
New Model battleship 2

7 - - Basic Battleship Hull

7 - - Basic Battleship Propulsion

7 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battleship Gun 350

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Advanced Optical Rangefinder

7 - - Basic Battleship Prototype Testing (D)

Improved Battleship

Historic Year: 1936
Prerequisites:

Basic Bat tleship

Effects:

Model is now obsolete. battleship 1
New Model battleship 3

7 - - Improved Battleship Hull

7 - - Improved Battleship Propulsion

7 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battleship Gun 400

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Decimetric Naval Artillery Radar

7 - - Improved Battleship Prototype Testing (D)

Advanced Battleship

Historic Year: 1941
Prerequisites:

Improved Battle ship

Effects:

New Model battleship 4
Model is now obsolete. battleship 2

7 - - Advanced Battleship Hull

7 - - Advanced Battleship Propulsion

7 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battleship Gun 400

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Improved Decimetric Naval Artillery Radar

7 - - Advanced Battleship Prototype Testing (D)

Semi-Modern Battleship

Historic Year: 1945
Prerequisites:

Advanced Battle ship

Effects:

New Model battleship 5
Model is now obsolete. battleship 3

7 - - Semi-Modern Battleship Hull

7 - - Semi-Modern Battleship Propulsion

7 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battleship Gun 400

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Centimetric Naval Artillery Radar

7 - - Semi-Modern Battleship Prototype Testing (D)

Super Heavy Battleship

Historic Year: 1938
Prerequisites:

Improved Battle ship

Effects:

New Model battleship 6

7 - - Super Heavy Battleship Hull

7 - - Super Heavy Battleship Propulsion

7 - n aval_artillery {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Naval Battleship Gun 460

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Centimetric Naval Artillery Radar

7 - - Super Heavy Battleship Prototype Testing (D)

Air Carrier

Great War Air Carrier

Historic Year: 1936
Prerequisites: None
Effects:

Activate Unit Type carrier
Activate Unit Type cag
New Model carrier 0
New Model cag 0

7 - - Great War Air Carrier Hull

7 - - Great War Air Carrier Propulsion

7 - {file-height=“24” file-width=“24” u rl=“/images/a/a1/Aeronautics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Sectional Flight Deck

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Great War Carrier Aircraft Group

7 - - Great War Air Carrier Prototype Testing (D)

Early Air Carrier

Historic Year: 1936
Prerequisites:

Great War Air Carri er

Effects:

New Model carrier 1
New Model cag 1

7 - - Early Air Carrier Hull

7 - - Early Air Carrier Propulsion

7 - {file-height=“24” file-width=“24” u rl=“/images/a/a1/Aeronautics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Experimental Straight Flight Deck

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Early Carrier Aircraft Group

7 - - Early Air Carrier Prototype Testing (D)

Basic Air Carrier

Historic Year: 1936
Prerequisites:

Early Air C arrier

Effects:

New Model carrier 2
New Model cag 2

7 - - Basic Air Carrier Hull

7 - - Basic Air Carrier Propulsion

7 - {file-height=“24” file-width=“24” u rl=“/images/a/a1/Aeronautics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Straight Flight Deck

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Basic Carrier Aircraft Group

7 - - Basic Air Carrier Prototype Testing (D)

Improved Air Carrier

Historic Year: 1938
Prerequisites:

Basic Air C arrier

Effects:

New Model carrier 3
New Model cag 3

7 - - Improved Air Carrier Hull

7 - - Improved Air Carrier Propulsion

7 - {file-height=“24” file-width=“24” u rl=“/images/a/a1/Aeronautics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Armored Straight Flight Deck

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Improved Carrier Aircraft Group

7 - - Improved Air Carrier Prototype Testing (D)

Advanced Air Carrier

Historic Year: 1941
Prerequisites:

Improved Air Carr ier

Effects:

New Model carrier 4
New Model cag 4

7 - - Advanced Air Carrier Hull

7 - - Advanced Air Carrier Propulsion

7 - {file-height=“24” file-width=“24” u rl=“/images/a/a1/Aeronautics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Angled Flight Deck

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Advanced Carrier Aircraft Group

7 - - Advanced Air Carrier Prototype Testing (D)

Heavy Advanced Air Carrier

Historic Year: 1943
Prerequisites:

Advanced Air Carr ier

Effects:

New Model carrier 5
New Model cag 5

7 - - Advanced Air Carrier Heavy Hull

7 - - Advanced Air Carrier Propulsion

7 - {file-height=“24” file-width=“24” u rl=“/images/a/a1/Aeronautics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Armored Angled Flight Deck

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Heavy Advanced Carrier Aircraft Group

7 - - Advanced Air Carrier Prototype Testing (D)

Super Heavy Advanced Air Carrier

Historic Year: 1944
Prerequisites:

Heavy Advanced Air Carrier

Effects:

New Model carrier 6
New Model cag 6

7 - - Advanced Air Carrier Super Heavy Hull

7 - - Advanced Air Carrier Propulsion

7 - {file-height=“24” file-width=“24” u rl=“/images/a/a1/Aeronautics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Armored Angled Flight Deck

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Super Heavy Advanced Carrier Aircraft Group

7 - - Advanced Air Carrier Prototype Testing (D)

Semi-Modern Air Carrier

Historic Year: 1945
Prerequisites:

Super Heavy Advanced Air Carrier

Effects:

New Model carrier 7
New Model cag 7

7 - - Semi-Modern Air Carrier Hull

7 - - Semi-Modern Air Carrier Propulsion

7 - {file-height=“24” file-width=“24” u rl=“/images/a/a1/Aeronautics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Floating Airbase Deck

7 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Semi-Modern Carrier Aircraft Group

7 - - Semi-Modern Air Carrier Prototype Testing (D)

Submarine

Dive Boat

Historic Year: 1936
Prerequisites: None
Effects:

Activate Unit Type submarine
New Model submarine 0

5 - - Experimental Pressure Hull

5 - - Basic Bronze Periscope

5 - - Basic Compass

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Diving Rudder

5 - - Dive Boat Prototype Testing (D)

Short Range Submarine

Historic Year: 1936
Prerequisites:

Dive Boat

Effects:

New Model submarine 1

5 - - Basic Pressure Hull

5 - - Improved Bronze Periscope

5 - - Tower Compass

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Underwater Elevation Rudder

5 - - Short Range Submarine Prototype Testing (D)

Medium Range Submarine

Historic Year: 1936
Prerequisites:

Short Range Submari ne

Effects:

Model is now obsolete. submarine 0
New Model submarine 2

5 - - Improved Pressure Hull

5 - - Steel Periscope

5 - - Nautical Gyrocompass

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Submarine Diesel Engine

5 - - Medium Range Submarine Prototype Testing (D)

Long Range Submarine

Historic Year: 1938
Prerequisites:

Medium Range Submarin e

Effects:

Model is now obsolete. submarine 1
New Model submarine 3

5 - - Advanced Pressure Hull

5 - - Basic Schnorkel

5 - - Large Fuel Tank Design

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Advanced Torpedo Chambers

5 - - Long Range Submarine Prototype Testing (D)

Electro Submarine

Historic Year: 1944
Prerequisites:

Long Range Submar ine

Effects:

New Model submarine 4
Model is now obsolete. submarine 2

5 - - Streamlined Pressure Hull

5 - - Improved Schnorkel

5 - - Closed Cycle Engine

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Air Condition and Cooling System

5 - - Electro Submarine Prototype Testing (D)

Semi-Modern Submarine

Historic Year: 1945
Prerequisites:

Electro Sub marine

Effects:

New Model submarine 5
Model is now obsolete. submarine 3

5 - - Coated Pressure Hull

5 - - Advanced Schnorkel

5 - - Single Propeller Silent Engine

5 - {file-height=“24” file-width=“24” u rl=“/images/d/dd/Electronics.png” decoding=“async” height=“24” loading=“lazy” width=“24”} - Anti-Radar Rubber Coating

5 - - Semi-Modern Submarine Prototype Testing (D)