Naval Doctrine Tech Tree

• Historic Year: 1936
• Prerequisites: None
• Effects:

• Max [Positioning] (/wiki/Positioning “Positioning”) battleship 0.3
• Min [Positioning] (/wiki/Positioning “Positioning”) battleship 0.1
• Max [Positioning] (/wiki/Positioning “Positioning”) battlecruiser 0.3
• Min [Positioning] (/wiki/Positioning “Positioning”) battlecruiser 0.1

8 - - Capital Ship Focus

8 - - Task Force Co-ordination

8 - - Task Force Concentration

8 - - Mahanian Theory

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Naval HQ Infrastructure

• Historic Year: 1937
• Prerequisites: None
• Effects:

• Max [Positioning] (/wiki/Positioning “Positioning”) heavy_cruiser 0.3
• Min [Positioning] (/wiki/Positioning “Positioning”) heavy_cruiser 0.1
• Max [Positioning] (/wiki/Positioning “Positioning”) light_cruiser 0.3
• Min [Positioning] (/wiki/Positioning “Positioning”) light_cruiser 0.1

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Basic Gun Control

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Basic Task Force Fire

8 - {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Main Armament Focus

8 - {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Basic Armament

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Basic Gunnery Training

• Historic Year: 1937
• Prerequisites: None
• Effects:

• Enable Mission Type: naval_port_strike
• Enable Mission Type: naval_airbase_strike
• Max [Positioning] (/wiki/Positioning “Positioning”) carrier 0.3
• Min [Positioning] (/wiki/Positioning “Positioning”) carrier 0.1

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Basic Flight Deck Operations

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Aerial Reconnaissance

8 - - Surface Combat Engagement Prioritization

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Carrier Maneouvring

8 - - Carrier Aviation School

• Historic Year: 1937
• Prerequisites: None
• Effects:

• Enable Mission Type: convoy_raiding
• Max [Positioning] (/wiki/Positioning “Positioning”) submarine 0.3
• Min [Positioning] (/wiki/Positioning “Positioning”) submarine 0.1

8 - - Warship Targeting

8 - - Submarine Reconnaissance Role

8 - - Warship Patrol Routes Focus

8 - - Surface Combat Engagement Prioritization

8 - - Submarine Warfare School

• Historic Year: 1937
• Prerequisites: None
• Effects:

• We may now build convoy escorts.
• Enable Mission Type: asw
• Max Positioning destroyer 0.3
• Min Positioning destroyer 0.1
• Convoy Escort Efficiency 0.25

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Basic Merchant Ship Direction

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

8 - - Co-ordinated Sailings

8 - - Effective Merchant Captains

8 - - Basic Convoy Evasive Maneouvres

• Historic Year: 1938
• Prerequisites:

• Decisive Battle Doctrine
• Naval Firepower Doctrine
• Fleet Auxiliary Carrier Do ctrine
• Fleet Auxiliary Submarine Doct rine
• Convoy Sailing Doctrine

• Effects:

• max_organization naval 15
• Morale naval 20
• TECH 8070
• TECH 8080

8 - - Offensive Posture

8 - - Basic Forward Naval Bases

8 - - Targets of Opportunity

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Offensive Weaponry Focus

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Enemy Infrastructure Focus

• Historic Year: 1938
• Prerequisites:

• Decisive Battle Doctrine
• Naval Firepower Doctrine
• Fleet Auxiliary Carrier Do ctrine
• Fleet Auxiliary Submarine Doct rine
• Convoy Sailing Doctrine

• Effects:

• max_organization naval 20
• Morale naval 10
• TECH 8060
• TECH 8080

8 - - Defensive Posture

8 - - Naval Base Defenses

8 - - Risk Aversion

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Defensive Weaponry Focus

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Enemy Deployments Focus

• Historic Year: 1938
• Prerequisites:

• Decisive Battle Doctrine
• Naval Firepower Doctrine
• Fleet Auxiliary Carrier Do ctrine
• Fleet Auxiliary Submarine Doct rine
• Convoy Sailing Doctrine

• Effects:

• max_organization naval 20
• Morale naval 20
• TECH 8060
• TECH 8070

8 - - Jeune École Theory

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Enemy Shipping Focus

8 - - Basic Evasion Techniques

8 - - Long-Distance Warships

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Basic Sealane Intelligence

• Historic Year: 1939
• Prerequisites: None
• Effects:

• Max [Positioning] (/wiki/Positioning “Positioning”) battleship 0.1
• Min [Positioning] (/wiki/Positioning “Positioning”) battleship 0.1
• Max [Positioning] (/wiki/Positioning “Positioning”) battlecruiser 0.1
• Min [Positioning] (/wiki/Positioning “Positioning”) battlecruiser 0.1
• Max [Positioning] (/wiki/Positioning “Positioning”) heavy_cruiser 0.1
• Min [Positioning] (/wiki/Positioning “Positioning”) heavy_cruiser 0.1
• Max [Positioning] (/wiki/Positioning “Positioning”) light_cruiser 0.1
• Min [Positioning] (/wiki/Positioning “Positioning”) light_cruiser 0.1
• Max [Positioning] (/wiki/Positioning “Positioning”) destroyer 0.05
• Min [Positioning] (/wiki/Positioning “Positioning”) destroyer 0.05

8 - - Torpedo Focus

8 - - Independent Admiral Mindset

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Enemy Warship Avoidance Focus

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Selective Engagements

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Basic Night Combat Training

• Historic Year: 1939
• Prerequisites: None
• Effects:

• Max [Positioning] (/wiki/Positioning “Positioning”) carrier 0.05
• Min [Positioning] (/wiki/Positioning “Positioning”) carrier 0.05
• Efficiency: naval_port_strike 0.1
• Efficiency: naval_airbase_strike 0.1

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Task Force Combat Air Patrol

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Defensive Carrier Mindset

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Anti-Aircraft Role

8 - - Co-ordination with Battle Fleet

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Improved Flight Deck Operations

• Historic Year: 1939
• Prerequisites:

• Subsidiary Carrier Role Do ctrine

• Effects:

• Max Positioning carrier 0.1
• Min Positioning carrier 0.1
• Max Positioning heavy_cruiser 0.05
• Min Positioning heavy_cruiser 0.05
• Max Positioning light_cruiser 0.05
• Min Positioning light_cruiser 0.05
• Max Positioning destroyer 0.05
• Min Positioning destroyer 0.05
• Efficiency: naval_port_strike 0.1
• Efficiency: naval_airbase_strike 0.1

8 - - Basic Carrier Co-ordination

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Long-Range Aviation Strikes

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Independent Carrier Operations

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Offensive Carrier Mindset

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Advanced Flight Deck Operations

• Historic Year: 1939
• Prerequisites:

• Fleet-in-Being Doctrine

• Effects:

• Max Positioning battleship 0.2
• Min Positioning battleship 0.2
• Max Positioning battlecruiser 0.2
• Min Positioning battlecruiser 0.2
• Max Positioning heavy_cruiser 0.1
• Min Positioning heavy_cruiser 0.1
• Max Positioning light_cruiser 0.1
• Min Positioning light_cruiser 0.1
• Snow Attack battleship 5
• Rain Attack battleship 5
• Snow Attack battlecruiser 5
• Rain Attack battlecruiser 5
• Night Attack battleship 5
• Night Defence battleship 5
• Night Attack battlecruiser 5
• Night Defence battlecruiser 5

8 - - Single Main Task Force

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Hierarchical Admiralty

8 - - Task Force Integration

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Improved Task Force Fire Co-ordination

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Enemy Battlefield Intelligence Focus

• Historic Year: 1939
• Prerequisites: None
• Effects:

• Max Positioning destroyer 0.1
• Min Positioning destroyer 0.1
• Convoy Escort Efficiency 0.1
• Efficiency: asw 0.1

8 - - Destroyer ASW Role

8 - - Independent Submarine Hunting

8 - - Hunter-Killer Group Co-ordination

8 - {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Basic Destroyer ASW Weaponry

8 - - Aggressive Destroyer Captains

• Historic Year: 1942
• Prerequisites: None
• Effects:

• Max Positioning destroyer 0.1
• Min Positioning destroyer 0.1
• Efficiency: asw 0.1
• Convoy Escort Efficiency 0.1

8 - - Coastal Airbases

8 - - Land-based Reconnaissance

8 - - Long-Range Naval Aircraft

8 - ! [bomber_tactics](/images/2/26/Bom ber_tactics.png){file-height=“24” file-width=“24” url= “/images/2/26/Bomber_tactics.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Aircraft ASW Role

8 - - Basic Aerial ASW Weaponry

• Historic Year: 1939
• Prerequisites:

• [Sealane Interdiction

Doctrine](/wiki/Naval_Doctrine_T ech_Tree#Sealane_Interdiction_Doc trine “Naval Doctrine Tech Tree”)

• Effects:

• Efficiency: convoy_raiding 0.05
• Max Positioning heavy_cruiser 0.1
• Min Positioning heavy_cruiser 0.1
• Max Positioning light_cruiser 0.1
• Min Positioning light_cruiser 0.1
• Max Positioning destroyer 0.1
• Min Positioning destroyer 0.1

8 - - Single Naval Sorties

8 - - Improved Evasion Techniques

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Surface Sea-Lane Patrol Focus

8 - - Cruiser Raiding

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Basic Raider Co-ordination

• Historic Year: 1939
• Prerequisites: None
• Effects:

• Max Positioning submarine 0.1
• Min Positioning submarine 0.1
• Efficiency: convoy_raiding 0.1

8 - - Merchant Targeting

8 - - Submarine Sea-Lane Patrol Focus

8 - - Skilled Submariners

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Basic Convoy Surveillance

8 - - Independent Submarine Operations

• Historic Year: 1939
• Prerequisites:

• Trade Interdiction Submarine Doctrin e

• Effects:

• Max Positioning submarine 0.2
• Min Positioning submarine 0.2
• Efficiency: convoy_raiding 0.1
• Snow Attack submarine 5
• Rain Attack submarine 5
• Night Attack submarine 5
• Night Defence submarine 5

8 - - Submarine Construction Focus

8 - - Submarine Tactical Flexibility

8 - - Long-Range Submarine Operations

8 - - Targets of Opportunity Exploitation

8 - - Basic Submarine Evasion Techniques

• Historic Year: 1940
• Prerequisites:

• Base Strike Doctrine
• Indirect Approach Doctrine
• Subsidiary Carrier Role Do ctrine
• [Carrier Task Force

Doctrine](/wiki/Naval_Doctrine _Tech_Tree#Carrier_Task_Force_Doc trine “Naval Doctrine Tech Tree”)

• Effects:

• max_organization naval 10
• Morale naval 20

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Improved Night Combat Training

8 - - Basic Land-Air Co-ordination

8 - - Devolved Tactical Command

8 - - Basic Forward Bases

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Multiple Engagements Focus

• Historic Year: 1940
• Prerequisites:

• Fleet-in-Being Doctrine
• Battlefleet Concentration Doct rine
• Subsidiary Carrier Role Do ctrine
• [Hunter-Killer Group

Doctrine](/wiki/Naval_Doctrine_ Tech_Tree#Hunter-Killer_Group_Doc trine “Naval Doctrine Tech Tree”)

• Effects:

• max_organization naval 15
• Morale naval 10

8 - {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Improved Armament

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Improved Gunnery Training

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Enemy Task Force Focus

8 - - Risk Assessment

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Improved Gun Control

• Historic Year: 1941
• Prerequisites:

• Fleet-in-Being Doctrine
• Battlefleet Concentration Doct rine
• Subsidiary Carrier Role Do ctrine
• [Hunter-Killer Group

Doctrine](/wiki/Naval_Doctrine_ Tech_Tree#Hunter-Killer_Group_Doc trine “Naval Doctrine Tech Tree”)

• Effects:

• max_organization naval 15
• Morale naval 10
• Convoy Escort Efficiency 0.1
• Efficiency: asw 0.1

8 - {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Improved Destroyer ASW Weaponry

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Improved Merchant Ship Direction

8 - - Merchant Ship Construction Prioritization

8 - - Improved Convoy Evasive Manoeuvres

8 - - Emergency Convoy Dispersal

• Historic Year: 1940
• Prerequisites:

• [Sealane Interdiction

Doctrine](/wiki/Naval_Doctrine_T ech_Tree#Sealane_Interdiction_Doc trine “Naval Doctrine Tech Tree”) - Raider Patrol Doctrine - Trade Interdiction Submarine Doctrin e - [Unrestricted Submarine Warfare Doctrine] (/wiki/Naval_Doctrine_Tech_Tree#U nrestricted_Submarine_Warfare_Doc trine “Naval Doctrine Tech Tree”) - Indirect Approach Doctrine

• Effects:

• max_organization naval 15
• Morale naval 25

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Improved Raider Co-ordination

8 - - Advanced Evasion Techniques

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Improved Sealane Intelligence

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Naval HQ Raider Focus

8 - - Raider School

• Historic Year: 1940
• Prerequisites:

• [Sealane Interdiction

Doctrine](/wiki/Naval_Doctrine_T ech_Tree#Sealane_Interdiction_Doc trine “Naval Doctrine Tech Tree”) - Raider Patrol Doctrine - Trade Interdiction Submarine Doctrin e - [Unrestricted Submarine Warfare Doctrine] (/wiki/Naval_Doctrine_Tech_Tree#U nrestricted_Submarine_Warfare_Doc trine “Naval Doctrine Tech Tree”)

• Effects:

• max_organization naval 15
• Morale naval 25

8 - - Raider Concentration

8 - - Disguised Resupply Vessels

8 - - Aircraft Interdiction Role

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Target Prioritization

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Decisive Engagement Focus

• Historic Year: 1940
• Prerequisites:

• Indirect Strike Doctrine

• Effects:

• Max Positioning carrier 0.1
• Min Positioning carrier 0.1
• Max Positioning battleship 0.1
• Min Positioning battleship 0.1
• Max Positioning battlecruiser 0.1
• Min Positioning battlecruiser 0.1
• Max Positioning heavy_cruiser 0.1
• Min Positioning heavy_cruiser 0.1
• Max Positioning light_cruiser 0.1
• Min Positioning light_cruiser 0.1
• Max Positioning destroyer 0.05
• Min Positioning destroyer 0.05
• Snow Attack battleship 5
• Rain Attack battleship 5
• Night Attack battleship 5
• Night Defence battleship 5
• Snow Attack battlecruiser 5
• Rain Attack battlecruiser 5
• Night Attack battlecruiser 5
• Night Defence battlecruiser 5
• max_organization naval 10
• Efficiency: naval_port_strike 0.05
• Efficiency: naval_airbase_strike 0.05
• Efficiency: convoy_raiding 0.05

8 - - Basic Underway-Refueling

8 - - Improved Land-Air Co-ordination

8 - - Basic Long-Range Aerial Recon

8 - - Logistic Requirement Minimization

8 - - Reliance on Naval Bases Reduction

• Historic Year: 1943
• Prerequisites:

• [Carrier Task Force

Doctrine](/wiki/Naval_Doctrine _Tech_Tree#Carrier_Task_Force_Doc trine “Naval Doctrine Tech Tree”)

• Effects:

• Max Positioning carrier 0.1
• Min Positioning carrier 0.1
• Max Positioning heavy_cruiser 0.05
• Min Positioning heavy_cruiser 0.05
• Max Positioning light_cruiser 0.05
• Min Positioning light_cruiser 0.05
• Max Positioning destroyer 0.05
• Min Positioning destroyer 0.05
• Snow Attack carrier 5
• Rain Attack carrier 5
• Night Attack carrier 5
• Night Defence carrier 5
• Efficiency: naval_port_strike 0.1
• Efficiency: naval_airbase_strike 0.1

8 - - Co-ordinated Airstrikes

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Integrated Combat Air Patrol

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Improved Carrier Co-ordination

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Improved Long-Range Aerial Recon

8 - - Sophisticated Carrier Damage Control

• Historic Year: 1942
• Prerequisites: None
• Effects:

• Efficiency: asw 0.1
• Convoy Escort Efficiency 0.1

8 - - Convoy-Task Force Co-ordination

8 - - Rapid Carrier Construction

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Carrier ASW Role

8 - - Improved Aerial ASW Weaponry

8 - - Small Carrier Seamanship

• Historic Year: 1943
• Prerequisites:

• Commerce Defence Doctrine
• [Aerial Convoy Defence

Doctrine](/wiki/Naval_Doctrine_Te ch_Tree#Aerial_Convoy_Defence_Doc trine “Naval Doctrine Tech Tree”)

• Effects:

• Max Positioning destroyer 0.1
• Min Positioning destroyer 0.1
• Efficiency: asw 0.1
• Convoy Escort Efficiency 0.1
• Snow Attack destroyer 5
• Rain Attack destroyer 5
• Night Attack destroyer 5
• Night Defence destroyer 5

8 - {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Advanced Destroyer ASW Weaponry

8 - - Advanced Convoy Evasive Measures

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Sophisticated Convoy Command HQ

8 - - Escort Construction Prioritization

8 - - Escort Co-ordination

• Historic Year: 1944
• Prerequisites:

• Carrier Aviation Doctrine

• Effects:

• Max Positioning carrier 0.05
• Min Positioning carrier 0.05
• Max Positioning destroyer 0.05
• Min Positioning destroyer 0.05
• Snow Attack destroyer 5
• Rain Attack destroyer 5
• Night Attack destroyer 5
• Night Defence destroyer 5

8 - - Supply Chain Management

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Integrated Merchant Timetable

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Improved Underway-Refueling

8 - - War Material Prioritization

8 - - Wolfpack Doctrine

• Historic Year: 1940
• Prerequisites:

• Commerce Raider Doctrine

• Effects:

• Max Positioning battleship 0.1
• Min Positioning battleship 0.1
• Max Positioning battlecruiser 0.1
• Min Positioning battlecruiser 0.1
• Efficiency: convoy_raiding 0.05
• Snow Attack battleship 5
• Rain Attack battleship 5
• Night Attack battleship 5
• Night Defence battleship 5
• Snow Attack battlecruiser 5
• Rain Attack battlecruiser 5
• Night Attack battlecruiser 5
• Night Defence battlecruiser 5

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Advanced Raider Co-ordination

8 - - Battleship Raiding

8 - - Co-ordinated Raider Sailings

8 - - Independent Capital Ship Captains

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Advanced Sealane Intelligence

• Historic Year: 1940
• Prerequisites:

• Commerce Raider Doctrine

• Effects:

• Max Positioning submarine 0.1
• Min Positioning submarine 0.1
• Efficiency: convoy_raiding 0.1
• Snow Attack submarine 5
• Rain Attack submarine 5
• Night Attack submarine 5
• Night Defence submarine 5

8 - - Submarine Co-ordination

8 - - Timing of Engagement Discipline

8 - - Improved Submarine Evasion Techniques

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Improved Convoy Surveillance

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Basic Submarine HQs

• Historic Year: 1942
• Prerequisites:

• Wolfpack Doctrine

• Effects:

• Max Positioning submarine 0.1
• Min Positioning submarine 0.1
• Efficiency: convoy_raiding 0.1
• Snow Attack submarine 5
• Rain Attack submarine 5
• Night Attack submarine 5
• Night Defence submarine 5

8 - - Advanced Submarine Evasion Techniques

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Advanced Convoy Surveillance

8 - [](/wiki /File:Centralized_execution.png ” centralized_execution”){.image} - Improved Submarine HQs

8 - - Turnaround Time Minimization

8 - - Experienced Submariners

• Historic Year: 1939
• Prerequisites: None
• Effects:

• Max Positioning battleship 0.1
• Min Positioning battleship 0.1
• Max Positioning battlecruiser 0.1
• Min Positioning battlecruiser 0.1
• Max Positioning heavy_cruiser 0.1
• Min Positioning heavy_cruiser 0.1
• Max Positioning light_cruiser 0.1
• Min Positioning light_cruiser 0.1
• Max Positioning destroyer 0.05
• Min Positioning destroyer 0.05
• Snow Attack battleship 5
• Rain Attack battleship 5
• Night Attack battleship 5
• Night Defence battleship 5
• Snow Attack battlecruiser 5
• Rain Attack battlecruiser 5
• Night Attack battlecruiser 5
• Night Defence battlecruiser 5

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Advanced Task Force Fire Co-ordination

8 - {file-height=“24” file-width=“24” url=” /images/e/ea/Naval_artillery.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Advanced Armament

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Advanced Gunnery Training

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Advanced Gun Control

8 - - Sophisticated Capital Ship Damage Control

• Historic Year: 1943
• Prerequisites:

• Deep Operations Doctrine
• [Escort Carrier Role

Doctrine](/wiki/Naval_Doctrine_ Tech_Tree#Escort_Carrier_Role_Doc trine “Naval Doctrine Tech Tree”) - [Aerial Convoy Defence

Doctrine](/wiki/Naval_Doctrine_Te ch_Tree#Aerial_Convoy_Defence_Doc trine “Naval Doctrine Tech Tree”)

• Effects:

• max_organization naval 15
• Morale naval 20
• Efficiency: naval_port_strike 0.05
• Efficiency: naval_airbase_strike 0.05

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Advanced Night Combat Training

8 - - Advanced Land-Air Co-ordination

8 - - Improved Forward Bases

8 - - Strategic Concentration of Forces

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Overwhelming Attack Focus

• Historic Year: 1944
• Prerequisites:

• Naval Attrition Doctrine
• Indirect Approach Doctrine
• [Carrier Task Force

Doctrine](/wiki/Naval_Doctrine _Tech_Tree#Carrier_Task_Force_Doc trine “Naval Doctrine Tech Tree”) - Trade Interdiction Submarine Doctrin e

• Effects:

• max_organization naval 20
• Morale naval 20

8 - - Advanced Underway-Refueling

8 - ! [naval_training](/images/1/10/Nav al_training.png){file-height=“24” file-width=“24” url= “/images/1/10/Naval_training.png” decoding=“async” height=“24” loading=“lazy” widt h=“24”} - Long-Distance Offensive Focus

8 - - Sophisticated Task Force Co-ordination

8 - - Long-Range Naval Aircraft

8 - - Multiple Avenues of Advance

• Historic Year: 1944
• Prerequisites:

• Maritime Power Projection Doct rine

• Effects:

• Max Positioning battleship 0.1
• Min Positioning battleship 0.1
• Max Positioning battlecruiser 0.1
• Min Positioning battlecruiser 0.1
• Max Positioning heavy_cruiser 0.1
• Min Positioning heavy_cruiser 0.1
• Max Positioning light_cruiser 0.1
• Min Positioning light_cruiser 0.1
• Snow Attack carrier 5
• Rain Attack carrier 5
• Night Attack carrier 5
• Night Defence carrier 5

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Sophisticated CAP-TF Co-ordination

8 - - Destroyer Picket Lines

8 - - Submarine Recon and Recovery Role

8 - - Integrated Anti-Aircraft Weaponry

8 - - Capital Ship Support Role

• Historic Year: 1944
• Prerequisites:

• Fleet Train Doctrine

• Effects:

• Max Positioning carrier 0.1
• Min Positioning carrier 0.1
• Max Positioning heavy_cruiser 0.1
• Min Positioning heavy_cruiser 0.1
• Max Positioning light_cruiser 0.1
• Min Positioning light_cruiser 0.1
• Snow Attack carrier 5
• Rain Attack carrier 5
• Night Attack carrier 5
• Night Defence carrier 5
• Efficiency: naval_port_strike 0.1
• Efficiency: naval_airbase_strike 0.1

8 - - Intensive Anti-Aircraft Defence

8 - - Carrier Fleet Train

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Advanced Carrier Co-ordination

8 - {file-height=“24” file-width=“24” url=” /images/e/e9/Carrier_tactics.png” decoding=“async” height=“24” loading=“lazy” width= “24”} - Advanced Long-Range Aerial Recon

8 - - Experienced Carrier Captains